hot water heater problem solving

8 common water heater problems – and expert solutions on how to fix them

Experts share their advice on how best to deal with these common water heater problems

1. Lack of hot water

2. foul odors, 3. low water pressure, 4. water leaks, 5. the water temperature is too hot, 6. strange noises, 7. rusty or discolored water, 8. pilot light or ignition issues (gas water heaters).

Like any other household appliance, water heaters are susceptible to problems that can hinder their performance, leaving you without clean, hot water when you need it most. Fortunately, many common water heater problems can be diagnosed and resolved with simple do-it-yourself troubleshooting techniques, saving you time and money on unnecessary repairs.

Identifying issues early on, and using the correct water heater maintenance methods, is essential for ensuring this home heating type remains in good working condition. Taking this proactive approach can not only prolong this appliance's lifespan, but also guarantees a reliable and efficient hot water supply throughout your home.

Below, our experts outline how to effectively diagnose and address the causes of eight common water heater problems.

Common water heater problems and solutions to fix them

Whatever the problem with your water heater, the key is to find a resolution and address it as quickly as possible to get your home back in working order.

White shower with seat, red lap, wooden cabinet

There's nothing more frustrating and unpleasant than an unintentionally cold shower, yet inadequate hot water is one of the most common water heater problems you are likely to face with a water heater, whether it's a matter of insufficient heating or a complete absence of hot water altogether.

No hot water: 'This is often caused by a malfunctioning heating element (in electric water heaters) or a faulty gas pilot, pilot control valve, or thermocouple (in gas water heaters),' explains plumbing expert and owner of Plumbing Lab, Josh Mitchell .

Insufficient hot water : 'This could be due to an undersized water heater, excessive sediment buildup in the tank, or faulty components like the thermostat or heating elements.'

Insufficient hot water:

Flush the tank: This can help restore proper functionality by removing sediment. Knowing how often you should drain your water heater and doing so accordingly can ensure this issue doesn't arise again in the future.

Adjust the thermostat: If the problem persists, check the thermostat settings and ensure they are correct. 'Ensure it's set to an appropriate temperature, typically around 120 degrees Fahrenheit,' recommends Pranav Taneja, project manager at John The Plumber .

Replace faulty heating elements: If there is insufficient hot water despite proper thermostat settings, inspect the heating element on a gas burner for a malfunction. In this case, it may be necessary to replace this to restore hot water production.

No hot water:

Check the pilot light: If you have a gas water heater and there's no hot water, the first thing you should do is check if the pilot light is out (see point 8). If it is, follow the manufacturer's instructions to relight it.

Replace broken heating elements: 'Next, inspect the heating element or gas burner,' advises Josh Mitchell. 'Look for any signs of malfunction and replace if necessary.

Reset the circuit breaker or replace a failed heating element: 'With electric and water heaters, no hot water could indicate a tripped circuit breaker or failed heating element. If so, reset the circuit breaker or replace a failed heating element.'

Replace a burnt fuse: If the issue is a burnt fuse, you can replace it with a new one, which you can likely find at your local department store for about $20. If you’re hiring a handyman, the total cost to repair the system will likely be around $150.

Josh Mitchell is, a plumbing expert and HVAC technician and the owner of Air Conditioner Lab and Plumbing Lab.

If you notice a foul odor, such as a rotten egg smell, emanating from your hot water heater, don't ignore it. This water heater problem indicates potential issues with the water heater or water supply.

Odors, caused by hydrogen sulfide gas, can indicate bacterial presence in the tank from stagnant water, sediment buildup, an anode rod reaction, corrosion, or contaminated water supply.

Flush and clean the tank: Use a mixture of water and hydrogen peroxide – such as this McKesson hydrogen peroxide from Walmart – to eliminate odors and bacteria. Allow the disinfectant solution to circulate throughout the tank before flushing it out thoroughly. This can help to remove sediment buildup and stagnant water, reducing the likelihood of bacterial growth and foul odors.

Inspect and replace the anode rod: If the foul smell is the result of a reaction between the anode rod and sulfate ions in the water, inspect the condition of the anode rod. Generally, the anode rod should be replaced every 3-5 years, so if it is corroded or depleted replace it with a zinc or aluminum one which will be less likely to react with sulfate ions and produce odors.

Check the water supply: If the smell persists even after flushing and disinfecting the tank, your water supply may be the issue. To check if this is the case, you may need to contact a professional or your water utility provider to test the water supply for sulfur, organic matter, or other contaminants and resolve this issue.

Address corrosion: If you notice signs of corrosion in the interior of the water tank heater, be sure to replace any corroded parts.

Regular maintenance: 'Keep the water heater at an appropriate temperature and perform routine maintenance to prevent bacterial growth and odors,' adds Paranv Taneja.

Aluminum Zinc Anode Rod| $26.99 from Amazon

Get rid of rotten egg smells with this flexible water heater anode rod

This anode rod is compatible with most heaters. It is easy to install due to its flexible design and includes a roll of pipe sealing tape.

Low water pressure means less water is delivered to faucets, showers, and appliances, making it more difficult to perform everyday tasks and limit appliance functionality. Luckily, knowing how to identify and fix low water pressure is relatively simple.

Low water pressure from hot water taps may result from mineral deposits or a malfunctioning pressure regulator.

Check pressure regulator: 'Ensure it's working correctly and adjust if needed,' advises Paranv Taneja.

Remove mineral deposits: 'Flush hot water pipes or use a descaling solution to improve pressure.' You can use this FLOW32 descaler from Amazon .

Consult a plumber: Paranv Taneja continues, 'If problems persist, a plumber can assess and address underlying plumbing issues.'

Water heaters can develop leaks which pose a serious problem requiring immediate attention to prevent water damage to your home and ensure your water heater works properly.

Paranv Taneja explains: 'Water leaks around the water heater can indicate issues like loose connections, corrosion, or a faulty pressure relief valve.

'Leaks can also be caused by loose heating element bolts, a corroded tank, or a faulty temperature and pressure relief valve.'

Inspect connections: Check all connections, including inlet and outlet pipes, and tighten loose fittings.

Pressure relief valve: Examine for leaks or corrosion and replace it if needed. If there are significant leaks or internal tank corrosion, professional repair or replacement might be necessary.

Tighten any loose bolts: 'Replace the temperature and pressure relief valve if it’s faulty,' recommends Josh Mitchell. 'If the tank is leaking due to corrosion, unfortunately, you will need to replace the water heater.'

Excessively hot water can make doing anything from washing dishes to showering an impossibly uncomfortable task, luckily, the solution to this water heater problem is often more simple than you might think.

This is usually a case of setting the thermostat too high, however, it also may be a malfunctioning thermostat that has caused this issue.

Ensure the correct thermostat temperature: Check the thermostat to see if it is in the ideal zone of around 120 degrees Fahrenheit. If not, make sure to lower the temperature.

Replace broken thermostat: If the adjustments don’t work, it’s possible that you have a faulty thermostat – and that will need replacing.

Strange noises emanating from your hot water heater can be concerning and may indicate underlying issues that require attention to continued safe and efficient operation.

Unusual noises, such as rumbling, popping, or banging, from the water heater suggest sediment buildup or a faulty heating element.

Flush the tank: Drain and thoroughly flush the tank. This water heater flush kit, from Amazon , can be the perfect investment to easily and effectively complete this task This should resolve noises caused by a build-up of sediment in the tank. If noises persist after flushing, inspect the heating element for damage

Replace the heating element or burner: Inspect for damage and replace if necessary.

Discolored water isn't just off-putting, if ingested it can be harmful, and so is a water heater problem that should be dealt with immediately.

'Rusty or discolored water coming from the hot water taps indicates corrosion inside the water heater tank or pipes,' explains Paranv Taneja.

Flush the tank: 'Drain and flush the water heater to remove sediment and rust buildup,' advises Paranv Taneja.

Inspect anode rod: The anode rod helps prevent corrosion within the tank by attracting minerals and other destructive elements. Once it reaches its end of life, the minerals return to degrading the lining of your hot water tank. So, check the condition of the anode rod and replace it if it's heavily corroded.

Consider pipe replacement: If the issue persists after flushing the tank, inspect hot water pipes for corrosion and replace them if necessary.

The pilot light is a small, continuous flame responsible for igniting the gas burner when hot water is needed. If the pilot light goes out, it can prevent the hot water from functioning properly.

Typically located near the bottom of the water heater, this is something to look for if you are experiencing issues with a lack of hot water or inconsistent hot water temperature.

'If the pilot light keeps going out or the ignition system fails to start, it could be due to issues with the thermocouple, gas supply, clogged pilot orifice, or electronic ignition,' explains Josh Mitchell.

To fix these issues, Paranv Taneja recommends:

Check the thermocouple: 'Ensure it is positioned correctly and not damaged. If faulty, replace it following manufacturer instructions.

Inspect gas supply: 'Verify that the gas valve is open and there are no obstructions in the gas line.

Test electronic ignition system: 'If equipped, troubleshoot the electronic ignition system for any faults and replace components as necessary. Ensure there are no drafts affecting the pilot light area.'

Should I replace my water heater before it fails?

The answer is yes, replace it before it fails!

'Doing this gives you the luxury of time to shop around, do the homework, compare prices, and grab some of the best deals you may not want to miss,' says Jay Sanders at Maryland Contractors .

'Traditional water heaters have a life span of about 8 to 12 years, and tankless ones average between 10 to 20 years, so if you continue to have any of the above problems even after trying to fix your appliance, it’s always better to replace it before it fails.'

What are the benefits of upgrading a water heater?

'The upgraded models of water heaters are usually more energy-efficient, meaning over time, you can save big money on your utility bills,' explains Jay Sanders. 'In fact, using modern water heaters, can save you up to $300 annually on energy costs.

'Moreover, the options like tankless water heaters may provide you with endless hot water. It may lasts up to 20+ years as compared to your traditional water tank models.

'Additionally, by investing in a high-efficiency model, you may also get qualified for specific rebates and credit cards. It may help in overall purchase cost reduction.'

Regardless of whether your water heater is currently experiencing issues, conducting regular inspections is crucial for preventing problems before they arise. By staying proactive and addressing any issues promptly, you can avoid costly repairs and maintain the efficient operation of your water heater to cut energy bills and ensure your home runs smoothly.

We explore how to make your water heater more efficient in our dedicated feature.

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10 Common Water Heater Problems and Solutions

Learn why your water heater isn't working, plus how to fix basic problems

Lee has over two decades of hands-on experience remodeling, fixing, and improving homes, and has been providing home improvement advice for years.

Emily Estep is a plant biologist and journalist who has worked for a variety of online news and media outlets, writing about and editing topics including environmental science and houseplants.

10 Common Water Heater Problems and How to Fix Them

When to call a professional.

Water Heater Maintenance

When a hot water heater isn't working, it's normal to think that only the pros can fix it. But many problems, including leaks, inadequate hot water, or rust-colored water can be fixed by yourself.

In some cases, it's just a matter of adjusting a setting or pressing a reset button. Some other common causes for a hot water heater not working include a faulty healing element, sediment buildup, and even a bad thermostat.

Of course, you'll want resolution quickly because a malfunctioning water heater can mean being unable to do chores such as the dishes or laundry. Sometimes, you may not be able to bathe either.

Here are 10 common water heater problems and how to fix them.

The Spruce / Candace Madonna

Electric water heaters are high-voltage (240-volt). Before checking the electrical parts of a water heater, shut off the power to the heater by turning off the appropriate breaker in the electric service panel (breaker box). Also, test all wires in the water heater with a non-contact voltage tester to confirm the power is off before touching the wires.

No Hot Water

The Spruce / Candace Madonna

A water heater that produces no hot water might not be getting power, might have a tripped limit switch, or might have one or more failed heating elements.

Here is how you can diagnose the cause of your lack of hot water:

First, check the water heater's circuit breaker in the service panel to make sure it hasn't tripped. If the breaker has tripped off, rock it to the OFF position, and then back to ON.
If the heater's breaker did not trip off, reset the high-temperature limit on the heater. To do so, turn off the power to the water heater in the service panel. Next, remove the access panel. Press the high-temperature reset button, which is usually red.

Inadequate Hot Water

If your water heater is producing hot water but not enough of it, the heater could be too small to meet the household's hot water demand. If this is the case, here are some solutions:

Limit the length of showers.
Install low-flow shower heads.
Spread out dishwashing and laundry to different times of the day.

A water heater should be able to supply 75-percent of its total capacity as hot water. For example, a 40-gallon water heater is properly sized for a demand of 30 gallons.

However, if your unit is not undersized or it suddenly produces less hot water than before, one or both of its heating elements might have failed. For example, a constant supply of lukewarm water during a shower could mean a defective upper heating element. Hot water that runs out quickly could mean a defective lower heating element. In either case, you must call a professional to replace the heating elements or the water heater.

Water Temperature Is Too Hot

Too much hot water typically means that one or both of the hot water heater's thermostats are set too high.

To fix this:

First, turn off the power to the water heater in the service panel.
Next, remove the access panel and check that the heat setting on both thermostats is no more than 120F°.
Adjust to the desired setting by turning the set screw with a flathead screwdriver.

Water Heater Is Leaking

Water heater leaks are often caused by leaking valves and plumbing connections. If you touch the water and it is warm or hot, it is likely the result of a leaking outlet pipe.

To repair leaking valves or plumbing connections, simply do the following:

First, inspect the water heater for loose inlet or outlet pipes.
If you find loose connections, simply tighten these with a wrench. This will fix the leak.

Rust-Colored Water or Bad Odor

When brown, yellow, or red-tinted water flows from faucets, the water heater tank may be internally corroded. When water comes out smelling like rotten eggs, the hot water heater tank could contain bacteria.

For tinted water:

Have a plumber replace the anode rod in the water heater tank. An anode rod is a metal rod in the center of the water heater that corrodes more easily than the tank itself. Oxygen, which is corrosive, is attracted more easily to the anode rod than to the water heater.

Bacteria in potable water, or Legionella , can be fatal if ingested. Consult a professional if you suspect this.

Tank Making Noises

Noises coming from the water heater that sound like a low rumbling, popping, or high-pitched whine could mean that the water in the tank is boiling. Sediment build-up in the bottom of the tank can cause the bottom of the tank to overheat and the water to boil.

To resolve this issue:

First, make sure to turn off the power and water supply to the water heater.
Second, completely drain the water heater of the water and sediment and then fill it again.
Attach the inner-threaded end of a garden hose to the valve at the bottom of the water heater, with the other end located outside.
Open both the temperature pressure relief valve at the top and the drain valve at the bottom.
After water and sediment have fully drained out, close the bottom valve and the upper-pressure relief valve, and then remove the hose.
Turn on the power and water again.

Leaking Cold Water From an Inlet

If a pool of water develops at the top of the water heater, the cause may be a leaking cold water inlet. This inlet is located at the top of the water heater. Tightening this connection will often stop the water leakage.

After first turning off the water supply to the water heater, tighten the inlet connection with a wrench by turning clockwise. Turn the water supply on again, dry off the top of the water heater, and observe for leakage.

Damaged Pressure Relief Valve

Lee Wallender

The temperature pressure relief valve on the side of the hot water heater may develop a slow leak. In many cases, you can replace the valve by yourself. To do so, follow the below steps:

Turn off the electricity and cold water supply to the water heater.
Drain water and pressure by opening the valve with a bucket placed below the plastic relief valve drain pipe.
Unscrew the pressure relief valve with a pipe wrench.
Screw the valve into the water heater, being sure to use Teflon plumber's tape.
Attach the plastic relief valve drain pipe.

Water Heater Is Leaking From the Sides

cmannphoto / Getty Images

Water leaking from the sides of the water heater can indicate a tank that is leaking due to corrosion or damage. This type of water leak flows from specific areas such as holes or cracks.

Any tank that has damage or corrosion on the tank itself should be replaced. Tanks cannot be safely repaired.

While waiting for a new water heater, prevent damage to the home by turning off the power and the water supply to the water heater, and then completely draining the tank .

Condensation on the Water Heater

Water heaters that appear to be leaking may actually be giving off water condensation. Water condensation will be widespread across the tank's outside, rather than localized as with cracks or inlet leaks. Water heater condensation usually does not indicate a problem with the water heater, though excessive water can damage the flooring.

To fix excess condensation:

Try setting the temperature at 120F° or even lower to 115F°.
Hire a plumber to disconnect the water heater and add a drain pan underneath to catch drips.

In some cases, you will not be able to fix your hot water heater without the help of a professional. Sometimes, you may even need to replace your hot water heater. Situations where you must call a professional to fix or replace include:

Tanks with damage or corrosion on the tank itself (you will need to replace the entire tank).
Cases of tinted water or foul odor.
Suspected bacteria in your water.
Certain instances of inadequate hot water.

The hot water heater may have a warranty that partially covers professional repairs. Check the paperwork that came with the water heater or consult the plate on the heater's side with the model and serial number.

These numbers detail the year the tank was made and can help you determine whether the tank has a prorated warranty that might offer a new tank or parts, either free of charge or at a discount. Warranties typically do not cover labor.

Maintenance Tips to Prevent Water Heater Problems

Of course, you shouldn't wait until something goes wrong to maintain your hot water heater! Regular maintenance is necessary and can help prevent problems in the first place. Some examples of hot water heater maintenance include:

Drain the water heater at least once a year.
Insulate the pipes.
Have the water heater inspected regularly.
Keep the temperature at 120F° or lower.
Test the temperature pressure relief valve once or twice a year, with a bucket placed under the outlet tube to catch water.
Have a plumber replace the anode rod about every five years.

A hot water heater will have a reset button. Typically red, you can locate your reset button directly next to one of the thermostats (most likely the top one). To reset, push the reset button and this should resolve the issue within an hour. Just be sure to avoid touching any wires when doing so.

The most common cause of water heater failure is due to a slow leak or sudden burst.

It will depend on the nature of the issue. If there is a slow leak, it is okay to wait. As well, a lack of hot water isn't necessarily an emergency but rather a nuisance. However, major leaks should be addressed immediately to avoid water damage and other issues.

After pushing the reset button, you should have normal use of your hot water heater again within a few hours.

Your Household Water Quality: Odors in Your Water , University of Georgia Extension

, Controlling Legionella in Potable Water Systems Centers For Disease Control and Prevention

No Hot Water — DIY Water Heater Troubleshooting & Repair

March 20, 2024

Problems with no hot water? Quickly diagnose your water heater issue with this comprehensive troubleshooting guide. Videos, drawings, and easy to understand step-by-step DIY advice show you how to fix your water heater or let you know if it’s time to call a pro.

To jump to the exact advice you need, select your specific problem:

• No Hot Water Anywhere In the House • Hot Water Not Working In Part of The House • No Hot Water In An Apartment • Water Is Not Hot Enough • Not Enough Hot Water Supply • No Hot Water In The Morning • Hot Water Has Low Pressure or No Pressure • Hot Water Is Too Hot

This article will show you how to troubleshoot and fix both gas and electric storage water heater problems. If you have a tankless water heater that is not working, see Tankless Water Heater Repairs .

Find A Professional Water Heater Repair Person Near You

How to Tell If Your Water Heater Is Gas or Electric

For many water heater repairs, it makes a big difference whether the water heater is gas or electric.

These links will take you down the page to HomeTips advice for each type:

Gas Water Heater Troubleshooting and Repairs Electric Water Heater Troubleshooting and Repairs

The two types heat water differently.

Here is advice for homeowners who aren’t sure which type of water heater they have.

A gas water heater is a combustion appliance that burns gas—it must vent the exhaust fumes to the outdoors through a flue (a round chimney pipe). So first look for a flue. A flue indicates that the water heater burns gas or another combustion fuel, such as propane.

In addition, a gas water heater has a gas pipe going to it, a pilot light, and a burner at the bottom of the hot water tank. An electric water heater doesn’t have any of these. The burner is typically behind a small metal access panel or viewing door. If you look past the access panel or viewing door, you should see a flame unless the pilot light is out. If the pilot light is out, that’s probably why the water heater doesn’t work. See how to relight it, below.

An electric water heater doesn’t produce combustion gasses, so it doesn’t have a flue at the top. It does, however, have an electrical cable or electrical conduit that connects it to an electrical panel . It has one or two thermostats on the side of the tank, as shown in the left part of the drawing below.

Water Heater Diagrams

No Hot Water Anywhere In the House

If there is no hot water throughout the house, the water heater’s gas burner or electric heating elements are probably not producing heat.

To be sure your entire house is without hot water, check every hot water faucet and fixture. If you find one or more fixtures have hot water, skip to Hot Water Not Working In Part of The House.
Also check other gas appliances in the house—such as a gas range or furnace—to see whether they work. If they don’t, your home’s gas supply has been interrupted—call the gas company.
Next, touch the water heater’s temperature-pressure (TP) relief valve and the hot water outlet pipe above the water heater (see water heater diagrams above ) to see if it’s warm or cold.
If you feel warmth, your water heater is probably working. The hot water may be getting blocked somewhere in the pipes between the water heater and the fixtures. Of course, the TP valve or pipe could still be warm if the water heater stopped working within the last 3 or 4 hours because the water inside would still be holding some heat.
If the TP valve or outlet pipe is cold , the water heater hasn’t been working for several hours. If this is the case and hot water is not available at any fixture, do the following, depending upon the symptoms.

Because methods for repairing the problem may depend on whether your water heater is gas or electric, these are discussed separately below. We’ll discuss gas water heaters first. if your water heater is electric, jump down the page to No Hot Water—Electric Water Heater for DIY fixes.

Browse Helpful Items on Amazon • TP Valves • Thermocouples • Electric Water Heaters • Gas Water Heaters

No Hot Water — Gas Water Heater

If a gas water heater isn’t heating, a common problem is usually that the pilot light has gone out. This may be caused by the gas valve, the natural gas supply, or—more likely—the thermocouple, a part that’s located next to the pilot light.

The following training video for water heater service people is excellent for gas water heater troubleshooting. Skip forward to the 11:15 mark in the video if you want to jump to dealing with no hot water.

Gas Water Heater Troubleshooting Video

First, look inside the inspection window at the bottom of the water heater tank for the small pilot light flame. In some cases, this may look like a small LED light. In fact, it may be so small that you’ll need to dim the room lights to see it.

If the pilot light is out, follow the instructions posted on the water heater or the details below here to relight the pilot light.

The first thing to check on a propane water heater is the gas level in the propane tank outside. If it’s low, have it refilled.

The pilot light can go out if the natural gas supply is interrupted, the gas valve is turned off, or a gust of wind blows out the pilot light.

This video guides you through the process of relighting a typical water heater’s pilot light. The good thing about this video is that the service person is working on an actual water heater rather than a disassembled model like the one in the video above. For more about this, read on.

How to Relight a Gas Water Heater Pilot Light

The problem is often that the pilot light has gone out. This can be caused by the gas supply being interrupted, the gas valve being turned off, or a gust of wind blowing out the pilot flame. Look for a very small flame—the pilot light—through the viewing window at the bottom of the water heater. If you don’t see a pilot light, try relighting the pilot. Instructions are almost always posted on the water heater, but these generic directions work for most water heaters:

1. Turn off the water heater’s gas shut-off valve.
2. Wait 5 minutes for gas to clear from the water heater.
3. Open the access cover to the pilot light (under the gas valve).
4. Turn the gas valve to “Pilot.”
5. Push down the knob (or a separate pilot button) to start the flow of gas to the pilot. Continue holding it down.
6. Use a long lighter to reach into the access and light the pilot. Keep holding the button down.
7. After holding down the knob or button for about one minute, slowly release it. Make sure the pilot flame stays lit.
8. Turn the water heater’s gas valve to “On.” When you do this, you may hear the burner ignite.
9. Secure the access cover back in place.

To relight the pilot light of a water heater like the one shown in the above video:

Hold down the pilot switch and click the ignitor button repeatedly. A tiny spark should ignite the pilot when you click the ignitor.
When the pilot ignites, continue holding down the pilot switch for one minute. During this minute, the pilot flame heats the thermocouple or thermopile. This device, when heated, provides the tiny amount of electricity needed to operate the water heater gas valve.
After one minute, slowly release the pilot switch and make sure the pilot light stays lit. If it doesn’t stay lit, repeat the process.

If the Water Heater Pilot Light Won’t Light

If you the pilot flame won’t light when you click the ignitor, look to verify that a tiny spark is happening by the pilot. If necessary, dim the room lights. If there is a spark, gas isn’t reaching the pilot. The cause may be:

• Air in the gas line. If the water heater was newly installed, the gas line is probably full of air. You’ll need to purge this air from the line by holding down the pilot knob longer.

• The gas valve on the gas supply pipe may be turned off. Be sure it is open. The valve handle should be parallel to the pipe.

• The thermocouple may be defective. See more How to Replace a Water Heater Thermocouple below. Call a water heater repair person if you don’t have the tools or skills to handle this.

• Low gas pressure or a malfunctioning gas control valve could also cause a pilot light to go out repeatedly. Call your gas company or a water heater repair person if you suspect this is the case.

If the Pilot Flame Keeps Going Out

If the pilot flame lights but keeps going out , its orifice could be dirty and clogged, making the flame small and unsustainable. Check to make sure there is no obvious dirt and debris clogging it.

If the pilot light goes out after you light it, click the high-limit reset switch (sometimes called a door switch), located down by the viewing door at the bottom of the water tank. Please refer to the video at the top of this article and advance to the 18:30 point in it to see a detail of how to reset this switch. Just push the button of this switch and listen for a click.

Then try relighting the pilot again.

If it still doesn’t stay lit, the problem is almost always a defective thermocouple. This is an inexpensive part—about $20. Professional installation, which we recommend unless you are an experienced do-it-yourselfer, should cost about $150, part included. Instructions for replacing it are in the video below.

Video: How to Replace a Water Heater Thermocouple

A malfunctioning thermocouple is a frequent cause of gas water heater problems. The pilot light may not stay lit if the thermocouple is faulty. If you are handy, you can adjust, clean, or replace this part yourself.

The following video shows how to diagnose and fix or replace a thermocouple.

Be sure to turn off the gas supply valve before working on these parts.

When you’re finished, turn the gas back on, relight the pilot flame as discussed above , and see if the burner works properly.

This video does a particularly good job of detailing how to remove the thermocouple and burner assembly, and how to replace it.

Water Heater Burner Troubleshooting

If the pilot stays lit, as it should when working properly, turn the gas valve to ON. The burner should ignite.

If the burner ignites, turn the thermostat back to an appropriate heat setting. Your hot water heater should work now.

If the burner does not go on, set the thermostat at about 120 degrees F. and turn on a hot water faucet. Wait a few minutes to see if the water heater burner ignites. If it doesn’t ignite, leave the hot water running and try lowering and then raising the temperature setting on the dial until the burner ignites.

If the burner still doesn’t ignite, turn off the hot water and read on. The water heater’s gas valve and thermostat may be defective.

Gas leaks. If you smell gas near it—the smell of rotten eggs or a garlic-like scent—turn the gas valve control to OFF (you may have to push down to turn it). That is the smell of natural gas. Wait until the gas smell has dissipated before relighting the pilot light.

If the gas smell is strong and doesn’t dissipate, immediately turn off the gas supply valve, ventilate the space, and call a plumber or your gas utility company from a remote location.

Water Heater Gas Valve Troubleshooting

Two main types of water heater gas valves are commonly used on storage water heaters: mechanical and electronic. These two valves are thoroughly discussed in the following video and the video at the top of this article .

If you’re a service professional or an avid do-it-yourselfer, and you want to understand the differences between classic mechanical gas valves and a newer electronic gas valve, watch the video here. It also discusses how to diagnose and handle problems.

Electronic gas valve. Many newer water heaters use a new electronic control valve called the Honeywell Smart Controller. Helpful for diagnostics, it has blinking lights that inform you or the service person about the water heater’s status.

As you might expect, this controller is more expensive than a mechanical gas valve, as are its replacement parts. Replacement of this may cost $300 to $400, installed.

No Hot Water — Electric Water Heater

When an electric water heater doesn’t heat water, either the power to the water heater has been interrupted or the controls or heating elements are not working.

Always shut off the power to an electric water heater before working on it. And never work on it if water is pooled on the floor near the appliance. Shut off the circuit to the water heater at the circuit break box and call a qualified water heater repair person.

Perform these diagnostics:

Be sure electricity is being delivered to the appliance. Check the main switch on the water heater and the circuit breaker (or fuse) that serves the water heater. If the circuit breaker has tripped, reset the circuit breaker by flipping it all the way to OFF and then back to ON. If a fuse has blown, replace it with a new fuse with the same rating. If the circuit breaker or fuse repeatedly blows out, call a qualified electrician to check and repair the circuit. Note that the water heater should not share a circuit with another appliance—it draws too much power when heating.
Check the high-temperature cutoff on the water heater. Open the panel and look for a reset button. Push it. If the button doesn’t make a clicking sound or you still don’t have power after pressing it, then your high-temperature cutoff switch is probably bad. Call an electric water heater repair person.
Look for leaks. If there is any water inside the compartment, this could cause the thermostat to malfunction. Leaking water means that your water heater may need to be replaced. See Water Heater Is Leaking .

If these steps don’t solve the problem, one or both heating elements may be defective. You can replace these yourself following the manufacturer’s instructions, or call a water heater service professional. See the following video for additional help.

Videos: No Hot Water—Electric Water Heater

Here are two helpful videos that show how to troubleshoot an electric water heater that doesn’t heat water.

In most cases, if the water heater isn’t heating water, the electrical elements inside it are not getting hot. This may be happening because the circuit breaker that controls the water heater has flipped off, the lower or upper thermostat stopped working, or electrical elements are defective.

To see more about troubleshooting and repairing your electric water heater, refer to this video:

Note: Unless the water heater stopped working more than a few hours ago, the water spilling out will be hot.

Tools and supplies you’ll need: • Inexpensive water heater element wrench • Replacement water heater element • Phillips screwdriver • Voltage testing meter • Towel

Electric Water Heater Troubleshooting

This video does a good job of illustrating how to make sure electrical current is flowing to the electric water heater. Similar to the video directly above, it also shows how to test the thermostat and elements, but it does a particularly good job of showing details such as the exact screws and terminals to test with a multimeter and how to use the multimeter.

Hot Water Not Working In Part of The House

Unless you have two or more water heaters, hot water in some part of your house means that the water heater is working. But something is keeping the hot water from traveling to the faucets or fixtures that don’t work. A typical example of this would be that the kitchen faucet produces hot water but you can’t get a hot shower.

Common reasons are:

• A cross connection. If you’re getting full pressure on the hot water side of your faucets but no hot water, then the problem probably isn’t a valve or a blockage. In that case, there may be a cross connection in the plumbing.

A cross connection can occur in a failing shower valve (or any mixing valve) that allows cold water to pass to the hot side, letting cold water into the hot water pipe. Or it can happen if a plumber makes a mistake when installing pipes.

• A closed valve. If there is a valve on the hot water pipe that exits the tank and goes to the non-working fixtures, be sure it’s all the way open.

• Mineral deposits in the pipes. If old steel water pipes have never been replaced, they may be filled with deposits that restrict water flow. Or chunks of mineral deposits may have broken loose from pipes or the interior of the water heater and traveled through the pipes to a place where they lodge (such as at an elbow), blocking water flow.

• Ice, if the pipes have frozen recently. Frozen pipes can restrict flow to part of the house. See How to Repair Frozen Water Pipes . Of course, if the weather isn’t freezing, this isn’t the problem.

• Distance. If the water heater is far from the fixtures that aren’t getting hot water, the pipes from the water heater may go through an unheated space such as a basement or attic where they give off their heat. Once the pipes warm up, this shouldn’t be a problem.

Answers to this issue are turning up the heat dial on the water heater, insulating the hot water pipes, moving the water heater, installing a second water heater or adding a recirculating pump system. Foam pipe insulation minimizes heat loss through hot-water pipes. If you can gain access to your hot-water pipes, from the basement, for example, put foam water pipe insulation sleeves onto them.

• A water recirculating pump system. If you have one of these, a defective check valve could allow cold water into the hot water pipe.

No Hot Water In An Apartment

One of the downsides of apartment living is that you’re not necessarily in control of your own water heater. In addition, your neighbors’ usage can affect your supply of hot water if you share a water heater.

Your first step should be to contact your landlord and alert them to the problem. Even though it may not be specified by your lease, your landlord is responsible for providing a healthy, safe space. Hot water is considered essential to healthy living. Documenting your complaint in writing is a good idea.

Someone will need to find out whether or not your unit is the only one with hot water problems. If it is the only one, a plumber should be dispatched to check your plumbing. If not, building-wide pipes and water heaters will need to be fixed.

The issues that may be restricting your hot water are all the same as those discussed above. With that in mind, the repairs will be the same.

If you’re lucky, the solution will be relighting the pilot flame as discussed above for gas water heating or resetting a circuit breaker for electric water heating.

Water Is Not Hot Enough

Before you do anything else, adjust the temperature control on the water heater toward hot. On a gas water heater, his is the dial on the gas control. On an electric water heater, it is the thermostat controls for the elements.

Wait a little while, then check the water temperature at a faucet. Don’t overdo this—the water shouldn’t be scalding hot.

If raising the heat doesn’t do the job, the dip tube that supplies cold water to the tank may be broken or cracked. (You can see this in the illustration above.)

This plastic tube is supposed to direct cold water to the bottom of the water heater tank. However, if this tube breaks or splits (which is a common problem over time), cold water pours in at the top of the tank and mixes with the hot water that is on its way to the hot water pipes. The result is lukewarm water.

Either have the dip tube replaced by a water heater repair pro (HomeAdvisor) , or, if the water heater is out of warranty and appears to have reached the end of its lifespan, consider replacing it—a new water heater is likely to operate more efficiently. You can see more about how to replace the dip tube in the Ron Hazelton video below.

Not Enough Hot Water Supply

Another common water heater problem is that the water heater doesn’t produce enough hot water. In other words, the problem is with the amount of hot water available.

You can try raising the temperature on the water heater, as discussed directly above. If adjusting the temperature doesn’t do the trick, try the water heater troubleshooting methods below.

A hand adjusting a water heater temperature dial, below the pilot light controls.

Never Enough Hot Water

If it seems like you never have enough hot water in your home, your water heater may be too small. If you never have enough hot water or your needs for hot water have increased because of a big new soaking tub or high-flow shower head, you’ll probably need to get a new, larger water heater. See our Water Heater Buying Guide .

Be sure to look into tankless water heaters because, with this type, you never run out of hot water.

Not Enough Hot Water Recently

If your water heater supplies less hot water recently (you’ve had enough hot water in the recent past but not now), first check the dial on the water heater, as discussed above. Then continue with the following water heater troubleshooting advice.

• Cold weather. In cold weather, your water heater must work harder to heat-up the cold water coming from the water supply. In addition, the water cools more as it travels through pipes that run through unheated spaces. Adjust the water heater to a slightly hotter temperature to make up for the cold.

• A leaking water heater. You’d probably know if it’s leaking but, just in case, check around its base for signs of water. If it is leaking, see Water Heater Is Leaking . Do this right away to prevent water damage.

• Sediment buildup. Over time, mineral deposits collect at the bottom of the water heater. These eventually build up. When they do, they diminish the transfer of heat to the water.

This cuts down on the water heater’s efficiency and its ability to adequately heat the water.

The answer is to flush the water heater tank, which removes deposits. See How to Flush or Drain A Water Heater .

A drawing showing how to flush a water heater by draining it with a garden hose.

No Hot Water In The Morning

A water heater’s thermostat is actually a temperature probe—a metal rod—that expands and contracts with changes in the water temperature inside the water heater. It is less precise than a furnace or air conditioning thermostat, so temperature swings of up to 30 degrees or more are normal.

Keep in mind that the water sitting in the pipes is cold, particularly in the morning. When you turn on the first shower, that cold water moves to the water heater. But the water heater’s burner hasn’t had time to warm it. So it mixes with the warm water in the tank and travels to the shower head as lukewarm water.

You can try turning up the temperature adjustment valve a little, but be careful not to make the water scalding hot!

Hot Water Has Low Pressure or No Pressure

First, determine whether the problem is with only the hot water or if it is with both hot and cold water.

Low Hot and Cold Water Pressure

If both cold and hot water pressure are low, this low water pressure is caused by:

• A partially closed shutoff valve. Inbound water passes through at least one shutoff valve before it reaches your house. The first one is out by the meter.

See How to Turn Off the Water to a Fixture or the House for locations of various valves. Be sure valves are all the way open by turning them fully counterclockwise. Check all valves.

• Low pressure being delivered by the water company. Call the water department and ask what the water pressure should be at your home.

You can buy an inexpensive water pressure gauge online or at a home center. Screw this onto an outside hose faucet, and open the faucet fully.

Good pressure is between 45 and 55 psi. If your pressure is below 40 psi, it is low. Investigate having a plumber install a water pressure booster. But don’t overdo it: Pressure above 80 psi will cause excessive wear on plumbing.

• Physical restriction in the pipes. Either some of the pipes may be too small or, if they are galvanized steel pipes, they may be clogged with mineral deposits. Replacing pipes is the only answer for this. Call a plumber.

For more, please see How to Solve Water Pressure Problems .

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Only Low Hot Water Pressure

Follow the same advice as directly above, but consider that you’ve narrowed down the problem to hot water pressure only. This means that the cause is somewhere between the water heater and the fixtures.

Most likely, the culprit is a partially closed valve, a constriction such as old steel pipes clogged with deposits or too-small pipes, or a chunk of deposits has broken loose from the water heater and jammed in a hot water pipe.

The next step in diagnosing a low hot water pressure problem is to define where the problem exists. Is it in one area of the house, at the shower in one bathroom, or at the kitchen sink?

Low Hot Water Pressure In Whole House or Several Fixtures

If you have low hot water pressure throughout the house or in an entire area (such as a bathroom), make sure there are no partially-closed valves on the hot water pipes that serve them.

If the pressure drop was sudden, it could be caused by a leak somewhere in the system (see Water Heater Is Leaking ). If you don’t find any signs of a leak, figure that the cause is likely a chunk of deposits has lodged in the pipe somewhere.

If the problem is chronic, re-piping is probably going to be necessary to solve it.

Either way, call a plumber.

Low Hot Water Pressure from a Shower Head

Low hot water pressure from a shower head is often caused by limescale mineral deposits clogging the shower head.

Here is how to dissolve mineral deposits in a shower head:

Fill a resealable plastic bag with equal parts white vinegar and hot water.
Fit this bag over the shower head so the head is fully submerged, and secure it with rubber bands or a twist tie.
Allow the solution to dissolve the deposits for several hours.
Remove the bag, and turn on the shower to rinse the shower head and wash away deposits.

If that doesn’t work, see How to Replace a Shower Head for instructions on how to remove it. Look for a little plastic disc—a flow restrictor. Remove this disc, reassemble the head, and try the shower again.

Low Hot Water Pressure from a Faucet

First look to see whether the faucet has an aerator screwed onto the end of the spout. If it does, unscrew the aerator and rinse out its screen, holding it upside down under a strong stream of water. If you need pliers to break loose its connection with the spout, wrap the aerator with duct tape first so you don’t scar the finish with the pliers.

If the faucet spout shows signs of limescale mineral deposits, dissolve them as discussed above for shower heads.

Another cause of pressure loss in a faucet is misalignment of its interior workings. Please see How to Fix a Leaking Faucet for disassembly and repair information.

Low Hot Water Pressure In a Washing Machine

Turn off the hot water supply valve. Then remove the hot water supply hose from the back of the washing machine.

Check the hose and/or the water inlet valve that the hose screws onto for a small screen that’s meant to catch any debris in the water supply. Using a small screwdriver, carefully pry out the screen. Thoroughly rinse the screen and reinstall it.

Hot Water Is Too Hot

Clearly, the first thing to do if your hot water is too hot is turn down the water heater’s temperature control. Note the present setting (or mark it with a felt-tip pen), and then turn it toward a cooler setting, wait a couple of hours, and see if the problem is solved. If it isn’t, continue with the following water heater troubleshooting advice:

Illustration of a hand marking a water heater temperature control dial with a felt-tip pen.

If steam or excessively hot water shoots out of faucets, or you hear boiling sounds inside the water heater, the appliance may not be shutting off at its set temperature. This condition can be dangerous, both because hot water and steam can scald people, and because the water heater could rupture from excess pressure. Note: The sound of water boiling is not the same as a rumbling sound near the base of the water heater caused by mineral sediment being churned by heat.

A high-temperature limit switch down by the viewing door at the bottom of the tank should protect the water heater from overheating. See the video at the top of this article and move to the 18:30 mark in the video to learn how to reset this switch. Push the button of this switch and listen for a click. If it doesn’t work, it will need to be replaced.

The job of the temperature-pressure (TP) relief valve is to release excessive pressure from steam buildup, but the TP valve may have been improperly installed, or it may be faulty.

Check the TP valve. Lift or lower the lever on this valve. Water should drain from the overflow pipe. If the valve is not working, turn down the water heater’s temperature and allow the water to cool, then replace the water heater’s pressure relief valve .

How to Choose the Right Recirculating Pump for Your Home

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Hot Water Heater Not Working – Common Problems

Posted on May 29, 2018

It’s bound to happen at some point –– you wake up one morning, and go to take a shower only to find that… there isn’t any hot water.

Oh, no –– could it be that your hot water heater is on the fritz?

Whether you have an electric or a gas water heater, you are likely to run into one of these common hot water heater problems:

Water not getting hot
Water heater leaking
Odor or discoloration
Making noises

Depending on the problem, you may be able to troubleshoot the issue yourself, or you may need to call in a professional.

Either way, we’ll help guide you through what to do if you should find yourself in one of these situations.

Troubleshooting Your Water Heater

As with any major home appliance, there are many things that can go wrong with your hot water heater. Since there are many different types , from tankless , to natural gas , propane , or electric , some issues may be particular to your situation.

Here we’ll take a look at some of the most common hot water heater problems for gas and electric water heaters, and what you can do to get back on track.

Water Not Getting Hot

A hot water heater not producing hot water is one of the most common, and easy to notice, issues that people come across. If you find yourself having some problems with your water temperature, there are a few things that could have gone wrong:

Temperature on water heater needs increased
Lack of power
Undersized water heater
Faulty thermostat

In this case, rule out electricity problems first. Check to see if there are any tripped circuit breakers, blown fuses, or the like. Then, check if power is running to the electric water heating thermostat; if that element is not working, replace it.

Next, check to see if the water heater temperature needs turned up. Did something knock the dial and lower the temperature? Check this just to make sure this small fix isn’t the issue.

If that isn’t the case, test whether the water heater is undersized by first checking to see if the heater has 75% capacity of hot water. Then, turn off the water supply and turn on a hot water faucet to see if water still flows. If it does, look for a crossed connection.

Obviously, these steps are more for electric hot water heaters rather than gas ones. For a gas water heater, check to see if the pilot light went out. If this is the case, and the light isn’t staying lit, the issue could be with the thermocouple.

If the necessary fix is a smaller one, such as the breaker or thermostat, you may be able to fix this yourself. However, if you find yourself needing a replacement hot water heater, or can’t pinpoint the issue causing the cool water, it may be time to call in a professional.

Hot Water Heater Leaking

Another common issue that you might run into with your hot water heater is leaks. Since hot water heaters have several ports and valves that can be a culprit for leaks, it’s good to look over all of them to see if they are leaking.

Is the water heater leaking from the drain valve, the pressure relief valve, the gas control valve, or the electric heating elements? Check all of these places first for leaks. From there, also look for any overflow pipe leaking or leakage from the bottom. You should also take a look at the plumbing system above the water heater, too.

If you find the leak, the fix could be as easy as tightening a loose bolt or piece. It’s also possible that a small piece may be cracked/broken and need replaced which is most likely a job for the pros.

If after checking all those elements you can’t locate the leak, it’s time to call a professional. The end result may be needing to replace your hot water heater.

Bad Odor or Discoloration

Should you find that your water is emitting a weird smell similar to rotten eggs, it’s likely that there is some bacteria buildup in your tank that is causing it.

In this case, you should clean out the tank with either hydrogren peroxide or chlorine bleach in order to eliminate the bacteria. First, flush the water heater, then treat the tank and pipes with the chemical solution. Additionally, if the smell persists after this treatment, you can also replace the anode rod with a zinc-alloy anode.

Depending on your level of comfort working on your hot water heater, you may wish to call in a professional to take care of the issue.

Water Heater Making Noises

Hearing a rumbling sound from your water heater could indicate that there is some sediment buildup of the scales on the heating elements, causing overheating and boiling water. Similarly, a high-pitched squeak can also occur.

In either case, flush the hot water and then clean the scales from the water heater tank to fix the issue. Again, depending on comfort level with water heater work, calling a professional is recommended.

Other Issues

Of course, these are not the only problems that can occur with your hot water heater. You might also find that you come across other issues like low water pressure, which can be caused by a variety of issues, most likely a clog in one of the tubes.

Also keep in mind any other factors that may contribute to your having issues with your hot water heater. For example, if you are experiencing a bout of cold weather, that might be causing the water to take longer to heat up.

Many issues that occur with hot water heaters are fixable, as they require only small tweaks or replacements to get things back in working order. In other cases, however, you may need to go ahead and replace the entire hot water heater if the issue is major enough.

If you aren’t sure whether or not it’s time to replace your hot water heater, err on the side of caution and call in a professional to take a look at what you are dealing with. You may find that in the end it is more cost effective and easier to simply replace rather than repair.

Get Your Hot Water Heater Back in Shape

No one likes having to fix or replace a major appliance in their home. Often times, when your hot water heater starts malfunctioning, there are some very simple ways to determine what the issue is, and set about fixing it. Other times, you may need to get a replacement.

If you’re noticing your water not getting hot enough, leakage, a bad odor or discoloration in the water, or strange sounds, these are all signs that your hot water heater needs some attention. While you may run into some of these problems with both gas and electric hot water heaters, a few are unique to electric ones specifically.

Whether you are in the need of a new hot water heater, or just thinking about replacing yours with the same one you already have, look no further. Total Home Supply has you covered, with tons of hot water heaters for the choosing, from brands that you know and trust.

Mickey Luongo

Mickey is the resident heating and air conditioning expert with over 15 years of experience in the industry.

One thought on “Hot Water Heater Not Working – Common Problems”

April 28, 2019 at 10:09 PM

My hot water heater in my travel trailer keeps going out and is hard to light. What should I do

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Site search, how to diagnose problems with a hot water heating system.

Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner figure out why one of her radiators is not working.

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In this video, This Old House plumbing and heating expert Richard Trethewey goes over some of the places to check when adequate heat is not being delivered from a forced hot water heating system. In this home, the water heats up in the boiler, goes up through the pipes, through the radiators, gives off heat to the room, and falls back down to the boiler to be heated again. That process is helped via an electric circulator pump which can be tested to ensure it is working properly.

All About Heat Pump Water Heaters

With any forced hot water system, there must be the right amount of water pressure going into the boiler and to the pipes. To help that, a pressure-reducing valve lessens the amount of water pressure from the city to the boiler. The pressure-reducing valve can be tested and a pressure gauge on the boiler will also indicate system pressure.

An expansion tank reduces the stress on the system. The top portion is filled with water and the bottom air is under pressure. In between the two, is a neoprene diaphragm to act as a shock absorber to the pressure. If that diaphragm fails, it can cause problems with the system. If only one radiator is failing to give off heat, check the air valve to determine if there is any excess air in the system. Check the shut-off valve going into the radiator, which may have been turned off for service or an attempt at zoning.

Next Up In Heating & Cooling

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Common Water Heater Problem Troubleshooting Guide

A failed water heater is every homeowner’s worst nightmare. Whether your heater stops producing hot water, the water pressure drops, or the tank starts leaking, the problem makes your life uncomfortable and difficult.

Instead of calling a plumber or just giving up on your water heater and buying a new one, try troubleshooting the issue yourself. There’s a good chance it’s something simple that you can fix on your own.

Table of Contents

1 Tank Water Heater Problems
2 Tank Gas Water Heater Troubleshooting
3 Tankless Hot Water Heater Problems
4 Tankless Electric Water Heater Troubleshooting
5 Tankless Gas Water Heater Troubleshooting
6 If You Still Can’t Fix Your Heater

Tank Water Heater Problems

Tank hot water heater not working? The problem could be down to something different according to whether it’s an electric or gas water tank not heating.

Tank Electric Water Heater Troubleshooting

Check out the list below of the most common electric tank water heater problems to find your issue. Before attempting to fix anything, always turn off the water heater at the service panel and then check the wires in your heater using a non-contact voltage tester — this will ensure that the heater really is off.

1. Leaking from the Top

It is important to fix a leak (even a minor leak) as soon as possible to prevent damage to your home or the water heater itself, including a short circuit. The leak could be coming from:

The ball valve. This inline valve is a joint with a handle. Stop the leak by tightening the nut that is holding the handle in place.
The pressure relief valve. The best thing to do when a T&P valve is leaking is replace the valve entirely.
A loose connection or stripped threaded nipple. If neither of the above are the problem, this is most likely the cause. A loose connection or stripped threaded nipple is a more difficult problem to resolve yourself — you’ll probably require a plumber.

2. Leaking from the Bottom

There are also several potential causes for water leaking from the bottom of your heater:

The drain valve. Check that the valve is completely closed. If it is, the leak is a sign you need to replace it.
The pressure release valve. Although the T&P valve is located at the top of the heater, a leak may appear at the bottom. This happens when the water is exiting through the overflow tube. You’ll need to replace the valve to resolve the problem.
Condensation. If neither of the above are the issue, the leak could be due to condensation. Check if this is the case by turning off your heater for a few hours to see if the leak stops. If it does, turn down the thermostat to prevent more condensation in the future.
The tank itself. If none of the above stop the leak, your tank itself may be leaking. This means that your water heater has come to the end of its life and needs replacing.

3. No Hot Water

If you’re receiving no hot water at all from your heater, it may lack sufficient power, have a tripped limit switch, or have a failed heating element. You’ll need to troubleshoot these one by one to diagnose the problem. The first thing to check is the circuit breaker for the water heater. If the breaker is tripped, simply switch it off and then on again. If the breaker is not tripped, move on to checking the high-temperature limit. Locate the access panel for the upper heating element and remove it. Next, carefully remove the insulation and plastic safety guard. After you’ve done this, press the high-temperature cutoff reset button. This is a red button above the upper thermostat. Put everything back and turn the circuit breaker on.

If you’re still without hot water after resetting the high-temperature limit, the problem must be in one of the heating elements. You’ll need to test each until you find where the problem lies. Bear in mind that more than one may have failed. Touch each screw with a tester probe. A heating element that doesn’t light up the tester needs replacing.

4. Insufficient Hot Water

A failed heating element can also lead to insufficient hot water. If your heating elements are fine, you may be able to increase the amount of hot water you receive by raising the thermostats. Remove both side panels covering the thermostats and the insulation beneath. Adjust the temperature using a flathead screwdriver.

If your thermostats are already set to a high temperature, the problem could be that your tank is too small to provide you with all the hot water you need. This especially likely if you now require more hot water than you used to. In the case that none of these are the cause, insufficient hot water is likely due to a damaged dip tube — the part of the heater that takes the cold water from the inlet down into the unit. Drain the tank and install a new dip tube.

5. Water Is Too Hot

When water is too hot, the problem is usually that the thermostats are set too high. If you live in an area of extreme temperatures, remember to lower the thermostats as soon as the warm weather begins. If you find that the thermostats are already set to a reasonable temperature, check that they are working by testing for continuity with a multimeter.

6. Water Takes Too Long to Reheat

Electric tank heaters can take a while to reheat water — this is just a downside of the design, as opposed to a problem that needs to be fixed. However, if your heater starts taking longer to reheat water than it used to, you should check the condition of the heating elements and thermostats. One or the other may need replacing. Check heating elements with a testing probe and thermostats with a multimeter.

7. Low Hot Water Pressure

If your water pressure has dropped recently, it may be time to clean your tank of sediment and calcium deposits. Do this by following these steps:

Turn off the cold water supply to your water heater.
Open a hot water faucet anywhere in your home. This will prevent a vacuum forming in the tank.
Connect a hose to the drain valve at the base of the tank. Leave the end of the hose in a bucket or drain. Open the valve to start draining.
Remove the anode rod at the top of the tank. It may be covered by a lid.
Pour in three to four gallons of vinegar and replace the anode rod.
Turn the water supply back on for just five to 10 minutes and then leave the vinegar in the tank for at least six hours before draining.
Refill your tank and turn the power back on.

You can also increase water pressure to individual appliances by cleaning sink aerators and shower heads. If all this fails to work, the likely culprit is the old ½-inch diameter of your galvanizing piping, which needs updating to modern ¾-inch piping.

8. Strange Noises

It is normal for water heaters to make some noise, but if your tank starts becoming more noisy than usual, it’s a good idea to check for leaks and too much pressure. You may also be able to reduce noises by cleaning your tank (instructions above).

9. Dirty or Rusty-Colored Water

Dirty or rusty water isn’t just unpleasant: it requires immediate attention because it’s a sign that your heater’s anode rod is corroded. Leave the problem any longer and your tank will likely develop a leak. Simply replacing the anode rod will return your water to its natural color and save your tank.

10. Smelly Hot Water

Smelly water can also be a sign of a corroded anode rod. As well as replacing the rod, flush your tank clean (instructions are above).

Tank Gas Water Heater Troubleshooting

Like with an electric tank heater, you need to turn your gas water heater off before troubleshooting . To do this, simply turn the thermostat to the “off” position.

The procedure to fix a leak from the top of a gas tank heater is the same as for an electric tank heater. Make sure to keep the cold water inlet turned on until you find the leak. Otherwise, you may end up lowering the water pressure enough to stop the leak — without fixing the problem! If you are unable to find the source of the leak at first, wrap the pipes with tissue paper and wait for damp spots to appear.

Similarly, the same problems that affect electric heaters can contribute to water leaking from the bottom of a gas water heater. Just make sure that the leak really is coming from the bottom and isn’t water dripping down from the top.

When your gas heater is producing no hot water, the first thing to do is check that the pilot light is on. If it has gone out, follow the instructions on your water heater to relight it. In the case you have electronic ignition, check if the breaker has tripped, turning it off and then on to start it working again.

If the pilot is on but you have no hot water, turn to the thermocouple. This needs to register that the pilot light is on before it will ignite the gas. Try cleaning the thermocouple. If that fails, replace it with a new one.

Insufficient hot water from a gas tank heater is due to the same issues that impact an electric heater. If you figure out that you simply need to turn up the thermostat in the winter, this requires a different (and much simpler) process than for an electric heater: just turn the knob on the front.

Extremely hot water is dangerous: it can cause scalding or lead to the rupture of your water heater. Use the same troubleshooting methods as for an electric tank heater to resolve this problem.

Gas water heaters that are taking longer to reheat often have dirty or clogged burner orifices. Cleaning them will usually do the trick. very corroded yet.

Alternatively, look at whether you need to turn up your gas pressure. The gas pressure rating should be on a label on the side of your water heater.

Low hot water pressure in a tank gas heater is due to the same issues as in an electric heater. Clean your tank (the procedure is the same as for an electric heater) and if that doesn’t work, consider upgrading your galvanized pipe.

8. Pilot Not Lighting

If you are unable to light the pilot, you could have an issue with the thermocouple, orifice, tube, or gas valve or there could be air in the gas line. Your best option is to ask your gas utility company to troubleshoot the problem for you. Often, this service is free.

9. Pilot Not Staying Lit

It’s also possible that the pilot is lighting but then going out. This may be due to a faulty thermocouple, which you can test with a multimeter.d yet.

If the thermocouple turns out to be fine, the problem could be a gas valve in poor condition. This is easy to replace yourself. Alternatively, it could be a partially clogged vent, the latter of which a plumber should fix.

10. Burner Not Staying Lit

Another problem is a burner that won’t stay on. Lower and then raise the temperature on the dial while running hot water. If this fails to solve the problem, check the thermocouple, burner orifices, and vent to find the issue, using the instructions above.

11. Strange Noises

Just like with an electric heater, some noises are normal. If the noises your heater is making are different from usual, clean the tank.

12. Rusty-Colored Water

Like with an electric water heater, rusty water signals the need for a new anode rod.

13. Smelly Hot Water

You may be able to eliminate the bad smell in your hot water simply by increasing the temperature on your heater to 140 degrees Fahrenheit. If this fails, clean the tank. If the smell returns, change the anode rod — even in the case it doesn’t look very corroded yet.

Tankless Hot Water Heater Problems

Tankless water heaters experience different problems from their tank counterparts. The good news is that the lack of a tank means that issues are less common. Once again, you will need to troubleshoot according to whether it’s a gas or electric water heater not working.

Tankless Electric Water Heater Troubleshooting

When troubleshooting an electric tankless heater, it is again essential that you have switched off the power in the breaker box and confirmed that all the wires are inactive before you begin .

1. No Hot Water

The most common reason an electric tankless heater stops producing hot water is a worn-out heating element. You can replace the heating element yourself by shutting off the water supply to your heater and draining any water that remains in your heater by turning on a hot water faucet. Next, open the heater by removing the cover, disconnect the wires, and switch out the old heating element for a new one.

2. Insufficient Hot Water

Electric tankless heaters usually only supply a few gallons per minute of hot water. They are unable to provide multiple appliances with hot water at the same time. For this reason, it is important to calculate how much hot water you’ll need when purchasing an electric tankless heater. Bear in mind that incoming water temperature will impact maximum gallons per minute you receive.

If you find that your electric water heater is unable to meet your needs, consider adding a second unit. Electric tankless heaters are more suitable as point-of-use heaters, especially in average to large homes.

3. Water Is Too Hot

Just like with tank heaters, water that is too hot could be because the temperature is set too high. If this is not the case, the likelihood is you need a new thermostat or temperature sensor. Find out if one is not working by using a multimeter.

4. Mineral Buildup

Even though your water heater has no tank, it will still start to suffer from mineral buildup unless you clean it on a regular basis. If you have hard water, this means flushing the heater every six months. Otherwise, once a year is likely enough.

The process is slightly different from cleaning a tank water heater:

Remove the lid.
Close the three water valves.
Remove the purge port valve caps. This will release pressure inside the heater.
Attach a hose to each of the valves and then reopen them.
Wash your water heater with vinegar.
Turn the valves back off, remove the hoses, and replace the caps.
Remove the filter and rinse it with water.
Put everything back together and restart your heater.

5. System Overload

Your unit may shut down if it is overloaded, such as if hot water demands become too high. Simply reset the heater to start it working again.

6. Cold Water Sandwich

A cold water sandwich is when water starts off hot, turns cold for a few seconds, and then returns to the right temperature. Unfortunately, there’s no fix for this — other than choosing a tankless water heater that doesn’t suffer from the problem. When you shower, wait for the water to run cold and become hot again before you enter.

Tankless Gas Water Heater Troubleshooting

Many of the tankless gas water heater problems are the same as those experienced by tankless electric heaters. However, there are a few differences.

First, check that your gas valve is turned on. If it is, the problem could be an obstructed heater vent, which requires professional attention.

Your tankless gas heater may provide insufficient hot water if it is too small for your needs. Your best option is to switch to a larger unit — you can find gas tankless heaters for all sizes of homes, up to very large. Alternatively, make sure your family uses less appliances simultaneously.

The causes of water that is too hot in a gas tankless heater are the same as for all other types of water heaters. Bear in mind, if the thermostat is working and set correctly, the temperature sensor could be broken or it could just need repositioning.

Mineral buildup affects gas tankless heaters just like electric heaters and requires the same cleaning procedure. Again, you’ll need to clean it more often if you live in an area with hard water — i.e. water with high mineral content.

A system overload can affect gas tankless heaters just like electric heaters. If this problem happens on a regular basis, consider switching to a more powerful heater.

6. Ignition Failure

Many tankless gas heaters let you know if they have an ignition problem by displaying an error message. If this occurs, confirm that your gas tank is full (if you have one) and that the gas valves are fully open. If neither of these is the problem, call a technician.

7. Flame Failure

A flame failure is often due to a blockage in the venting. You’ll need a professional vent cleaning service.

8. Air Supply or Exhaust Blockage

Another error code that can appear on tankless gas heaters is air supply or exhaust blockage. If there are no obvious objects or debris blocking the venting and you are meeting the clearance requirements set out in the heater’s product manual, you’ll need a plumber to inspect the pipes and connections.

9. Cold Water Sandwich

Like electric tankless heaters, gas water heaters can suffer from cold water sandwich. Again, there’s no fix other than changing to a heater designed not to have the problem.

If You Still Can’t Fix Your Heater

There’s always the possibility that your water heater has come to the end of its life and is beyond repair. This is particularly likely to be the case if you have a tank water heater that is more than about a decade old. If you do need a new water heater, consider upgrading to a tankless model — it will save space, reduce energy costs, and last much longer.

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Last Updated on April 6, 2022

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Solved! What to Do When There’s No Hot Water

By Steffani Cameron , Bob Vila

Updated on Oct 1, 2021 8:56 AM EDT

8 minute read

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Q: Even though my shower was perfectly toasty when I hopped in, it quickly chilled until there was no hot water left at all—even an hour later. What gives?

A: Assuming that no one else has been hogging the hot water all day, and you have no hot water in the house but have cold water, the problem of having no hot water probably lies within your water heater.

First, confirm that your water heater is the appropriate size for your daily household needs. These units range in size from about 30 to 80 gallons, with the smaller end of the spectrum ideal for the modest needs of a single-person, half-house setup and the larger end suited for families with multiple children.

Assuming the water heater is big enough for your family’s needs, how you proceed in troubleshooting your water heater not heating will depend on the type of water heater you have, gas versus electric .

First things first…

Bump up the thermostat..

Ideal operating temperatures for hot water heaters are between 122 and 140 degrees Fahrenheit. A system running below this range risks not only a hot water deficit but also the potential for growth of Legionella bacteria, which are responsible for a severe form of pneumonia known as Legionnaires’ disease. If the water heater isn’t already set in the ideal range, adjust it. In 30 to 40 minutes, you can expect hot water to return, and within two hours the unit should reach a temperature that will prevent the growth of pathogens.

Check the forecast.

A sudden cold snap in your area can impact the effectiveness of your gas- or electric-powered water heater, even causing it to conk out. This most often occurs overnight, when the heater sits unused and temperatures plunge. If your recent weather aligns with this scenario and your boiler is still running, try turning the hot water heater up to its max in order to kick it back into gear. After a half hour, turn on a kitchen or bathroom faucet to see if the water warms up after running for a few minutes. If it does heat up, return the hot water heater setting back to normal operating temperature, or even raise it a few degrees higher than usual until the cold snap ends.

If yours is a gas-powered water heater…

Relight the pilot light..

If your gas water heater’s pilot light has been snuffed out by a downdraft in a vent pipe on a stormy day or the breeze through an open window, see if you can relight it with ease following the instructions permanently affixed to the side of your unit. In some instances—such as when a water heater’s pilot light sits in an enclosed burner chamber—you may need to call in a plumber. If, however, you smell gas while you’re sniffing out the problem, hightail it out of the house and call the gas company!

Fix a faulty thermocouple.

If you can successfully light the pilot light but the flame doesn’t stay on after you release the control knob, the thermocouple—a safety device that shuts off gas flow if it senses that the pilot light is out—may be at fault. The tip of this copper tube should be in the flame of the pilot light; if it’s out of line, it could need adjusting or replacing. Fortunately, a thermocouple doesn’t cost a fortune, and replacing it can be a DIY repair.

Rekindle a blue flame.

Is your water not so frigid as it is lukewarm? Does your pilot light burn yellow rather than the standard blue? These are symptoms of a gas-to-air ratio problem. First, be aware that a yellow flame could mean that the boiler is releasing carbon monoxide, a colorless, odorless, and toxic gas. Check for drafts or open windows that might be causing the pilot light to burn inefficiently, and remedy the breezy situation. If this doesn’t return the pilot to a crisp, blue flame, call a technician to check out the unit. In the meantime, pay attention to any signs of carbon monoxide poisoning (dizziness, faintness, or nausea), and if necessary leave the house immediately to seek medical assistance.

Inspect the gas line.

If after turning the valve on you neither see a pilot light nor smell gas, the problem may lie with the fuel source. Check whether the gas valve is open or closed, and eyeball the gas line for any kinks that might be causing a roadblock. If you’ve adjusted the gas flow and nothing has improved, call the gas company to ensure that there’s service in your area and that your account isn’t in arrears. If the gas company assures you that you should have gas, yet turning the valve on still doesn’t produce gas (you’ll smell it if it’s there), then it’s probably time to contact a plumber or other professional.

If your water heater runs on electricity…

Restart your water heater..

A current can go awry as a result of a power surge from an electrical storm. Try turning your electric unit off for a couple of minutes and then switch it back on. If after a half hour the hot water is not working, you’ll need to move on to another solution. Proceed cautiously: Before you attempt to repair or even inspect the water heater, make sure the unit is off. These appliances draw enough power that an accidental electrocution could be fatal, so work carefully or call in a pro.

Reset the circuit breaker.

If tripped , the water heater’s dedicated breaker may not appear to be “off” but could still be just a little out of whack—not quite in line with the other “on” breakers. Flip it off, wait for 20 seconds, then flip it back on. A breaker that doesn’t hold the “on” position may have failed from age or overwork. If that’s the case, call on a professional for replacement.

When all else fails…

Call in the professionals..

Concern over safety coupled with the technical nature of a water heater repair mean that it’s best to leave the work to the professionals. If your unit is not on its own breaker—or the breaker needs replacing—call a qualified electrician. Or, if your tank leaks onto the ground or inside the heater’s compartments, bring in professionals to service your water heater before it damages the heating elements or stops thermostat function. He or she may check the heating element for the water heater to ensure it is functioning properly. You might also want to have the pro check that the high temperature cutoff switch is working correctly. If the water gets too hot, the heater can shut down altogether.

The life span of water heaters is anywhere from 10 to 20 years and beyond, depending on type.

Standard hot water heaters—the type with a big tank tucked into an enclosed space somewhere — have a typical life span of about 10 years. Tankless , or on-demand, water heaters often last more than 20 years. If your hot water heater is approaching its maximum life expectancy, its elements, thermostat, or other components may soon fail and need replacement . It’s important to assess whether replacing the parts makes sense. In the case of a standard heater, it may be smarter to replace your water heater altogether and capitalize on the improved energy efficiency that a newer unit would offer. When it comes to tankless water heaters , however, the ability to easily and affordably replace parts as needed is a way to greatly extend the life of your tankless hot water heater without the need for replacement. Homeowners can plan ahead by purchasing a home warranty. Policies from one of the best home warranties for plumbing (like American Home Shield ) can help pay to repair or replace water heaters that break down due to normal wear and tear.

Avoid the misery of a cold shower — replace the hot water heater before it fails.

Perhaps you’ve already replaced the heating element for your water heater and performed other maintenance tasks and yet still the water heater is not working consistently, leaving you in the cold. It may be time to replace the water heater before it fails altogether. Consider the unit’s age, the number of repairs it’s undergone, the times you’ve had to “reset” it because you’ve turned into a Popsicle in the shower, the odd noises it emits, and those worrisome leaks you’ve noticed. If the signs are there, it might be time to replace your hot water heater with a new, reliable unit.

Final Thoughts

Whether you’re mid-shower or cleaning up after dinner, losing hot water is no fun. Fortunately, a few sure-fire steps will help ensure you rarely encounter this problem or can fix it quickly if it does occur. Start by ensuring you have the right hot water heater for your needs, keep that heater well-maintained, and then if something goes awry anyway, run through a checklist of problem-solving steps to feel the warmth once again.

FAQs About Why You May Have No Hot Water

Q: how do you reset your hot water heater.

If you have a gas hot water heater, you may need to relight the pilot light. For an electric hot water heater, hit the reset button if there is one, or unplug the water heater for a couple minutes, and then plug it back in. If that doesn’t work, reset the breaker associated with the hot water heater.

Q: What should I check first when there’s no hot water?

First, check that the thermostat on your water heater is set appropriately. Ideally, your hot water heater is set to heat water to somewhere between 122 and 140 degrees Fahrenheit.

Q: What causes hot water to stop working during a storm?

If temperatures plunge due to a winter storm, you may need to turn up the heat setting on your hot water heater. Also check that power and gas supply is uninterrupted.

Q: What is the most reliable type of water heater?

Many consumers find tankless water heaters to be the most reliable water heaters. These water heaters have fewer moving parts that can wear out over time, and their parts are used only when needed to supply hot water on demand, not constantly as with storage tank water heaters.

Your Biggest Questions About Heat Pumps, Answered Your Biggest Questions About Heat Pumps, Answered

By Tony Carrick

Anker’s New Home Battery Tower Is a Sleek, Modular Step Toward Complete Energy Independence Anker’s New Home Battery Tower Is a Sleek, Modular Step Toward Complete Energy Independence

By Chase Brush

7 Common Water Heater Problems: How to Fix Them

Man opening the lid of a water heater to check for problems

Did you wake up this morning to find you had no hot water? Has your water heater been making strange noises lately? Water heater problems can be very disruptive and these are just two of the many issues that can occur.

Occasional problems with household appliances are an unavoidable part of owning a home, and it can be difficult to know what to do in such situations. Should you attempt to resolve the issue yourself or is it time to call for professional help?

In this article, we will explore common issues with water not heating and explain how to fix your heater. We will also tell you when you are probably better off calling a professional.

Key Takeaways

Common water heater issues include leaks, no hot water, and foul smells.
Maintenance, such as flushing the system and replacing anode rods, can prevent many problems.
Check valves and power supply when troubleshooting water heater issues.
Consider consulting a professional for complex or electrical issues.

Traditional Tank vs On-Demand

Gas vs electric units, when your water is too hot, when there’s no hot water, inadequate water pressure, foul smells and discoloration, a noisy unit, water heater leaks, pilot light isn’t lit, in conlusion.

Whether you have a traditional tank or a tankless on-demand heater, you will probably run into many of the same or similar issues. Let’s look at the key differences between these two units.

You will find a traditional tank water heater in most older homes. A large water tank is filled and heated to provide a home with hot water. The temperature of the water needs to be maintained so it’s ready when needed.

In contrast, tankless water heaters only provide hot water when it is needed (1) . As you don’t need to maintain the water temperature in a tank, this option reduces your carbon footprint and saves money on your bills .

Many people are now switching to on-demand water heaters. This is largely due to their superior efficiency.

The main issue with tankless heaters is that even the largest models might be unable to heat enough water for a large family to use simultaneously. You might need to invest in more than one heater, depending on your usage.

Diagnosing and resolving a problem will depend on whether your unit is fuelled by gas or electric-powered.

When you experience any water heater issues, the first thing to do is to check the power supply. In many cases, interruptions to the power supply are the cause of water heater problems.

What should you do if you turn on your faucet and the water is scalding hot? Start by running a diagnostic on the thermostat of your heater unit. If the temperature is too high, turn it down a few degrees.

The U.S. Consumer Product Safety Commission (CPSC), recommends setting your water heater to 120 degrees Fahrenheit (2) . Not only will this prevent scalding, but it’s also more efficient and economical.

Depending on your unit type, there will be a different way to check the temperature and set it lower.

If you’re too uncomfortable to reset it yourself, you can call your electric company to do it for you. In some cases, they will do this at no extra cost.

However, if you’re feeling confident, resetting your electric water heater temperature is fairly easy.

Try not to use any hot water for at least two hours prior to resetting the temperature. Before proceeding, turn off all water and power to your system.

Your electric hot water system will probably have two thermostats. Make sure both are set to the same temperature.

There should be instructions provided with your unit showing how to properly adjust the thermostats. To reach them, you will probably need to remove the upper and lower access panels.

Once they are adjusted, turn the power and water back on. You can use a cooking thermometer under a faucet to check that the water is now at an acceptable temperature.

Thermostats on gas hot water systems differ from unit to unit. Call your gas company for special instructions or consult the owner manual to make sure you adjust it correctly.

When you have set the thermostat to an acceptable temperature, check the water coming from your faucet with a thermometer before using it.

Whatever your type of energy supply, if adjusting the thermostat doesn’t resolve the problem, call in a professional.

Your location and a lack of proper maintenance could be significant reasons for your lack of hot water . It’s also possible that your water heater isn’t enough to keep up with your household’s demands.

1. Frozen Pipes

Frozen pipes are a frequent problem in colder regions. It is especially common in pipes located in garages, attics, and basements (3) . Frozen pipes can become problematic if they aren’t dealt with immediately and can lead to your heater not working at all.

If this is your issue, we recommend investing in pipe insulation. This is inexpensive and you can get it at any hardware store.

You can also reduce the risk of frozen pipes by leaving cabinets open and keeping external doors shut.

Letting your cold water drip and keeping the thermostat at a consistent temperature throughout the day will also reduce the risk of freezing. We only recommend these as temporary solutions as they are not energy efficient.

You might also experience your hot water running out or becoming too cold. This could be a simple case of using too much at once.

What was adequate when the water heater was installed might no longer be enough to keep up. With a lifestyle change or additional household members, it could be time for a change. You may need to invest in a larger heater or buy an extra unit for your home.

3. Poor Maintenance

Maintenance of your household appliances probably isn’t the main thing on your mind. However, without it, your appliances are going to have a shorter lifespan and will eventually malfunction and encounter major problems.

It’s recommended to flush your water heater system at least once per year. You can call a professional to do this, but it’s relatively easy to do yourself.

4. Unit Is Too Old

Water heaters are only expected to last so long. If you have maintained yours properly but are still experiencing issues, it’s probably time to invest in a new one.

Many heaters have a shelf life of between 10-15 years (4) . Water heaters can come with a pretty hefty price tag, so be sure to check your warranty. This could also be a good time to invest in a tankless water heater if you don’t already have one.

If you turn on your faucets and have low water pressure, there might be an issue with parts of your water heater system. These can include blocked plumbing, a closed shut-off valve , a blocked faucet, or water leaks (5) .

When you have this problem, there are a few ways of troubleshooting it.

1. Checking the General Water Pressure

Check whether the low water pressure is in every part of your house. If you find it’s only in one room, it’s possible you simply have a clogged pipe in that area.

If low water pressure only affects your hot water faucet, it’s likely an issue with your water heater.

2. Checking Pressure Relief and Water Shut-Off Valves

Often, low water pressure is due to pressure relief or water shut-off valves. Check the pressure relief valve first. This is the valve that’s shaped like a bell.

Adjust the pressure relief valve by turning the screw. To increase pressure, tighten the screw by turning it clockwise. If the valve is damaged or broken, you will need to replace it.

The water shut-off valve can cause water pressure issues even if it has only been adjusted slightly. Ensure your shut-off valve is completely open and then check whether or not your water pressure is normal.

3. Water Leak

Water leaks can cause low pressure because you are losing water before it reaches the faucet. Check the floor around your unit for water. This is a solid indicator that you have a leak somewhere in your water heating system.

Look and listen for any dripping water and check your unit for any cracks or condensation around it.

Have you turned on your faucets only to smell rotten eggs or sewage ? This is very common and is generally pretty easy to diagnose. If you have a traditional tank water heater, the anode rod is the likely cause of the foul smell.

Anode rods are sometimes referred to as “sacrificial anode rods” because they’re made of a material that corrodes easily. These are placed in hot water tanks to draw corrosion to the rod rather than the tank itself.

The corrosive agents on the anode rods can mix with your water and react to create hydrogen sulfide gas. If you smell rotten eggs, you need to replace the anode rod . This is something that should be done periodically anyway.

Anode rods typically last between 4-5 years. It’s always recommended to have two anode rods with your heater to last the unit’s full shelf life.

Follow these steps to replace an anode rod:

Find your unit’s anode rod: You can typically find it right on top but, in some cases, you will need to take the lid off your tank to find it.
Turn off the water and power supplies.
Drain the water just enough: You only need to drain enough to be able to get the rod out. You still want the weight of the water to hold the tank down for you.
Use a socket to twist it off and take out the old rod: You may need help with this as the rod can sometimes be fused onto the tank.
Insert your new anode rod and seal it off.

If your water heater is making any unusual noises, chances are that something is wrong. However, not every noise means the same thing. Different noises will indicate various issues that need addressing (6) .

Noisy units are typically more common with traditional tanks than tankless water heaters. Some noises are nothing to worry about. Clicking sounds in a tankless heater, for example, are usually just the unit turning on and off.

Any other noise from a tankless water heater could be caused by:

Calcium deposits from hard water.
Burner issues.
A dirty fan system.
A sealed combustion leak.

Noises from traditional tanks are far more common and due to several reasons:

1. Crackles, Pops, and Rumbles

If you hear these noises from your traditional tank, it’s probably due to sediment build-up on your heating elements. This is much more common in older units.

The noise comes from the water element working harder to push the water through the cracks. Steam is produced around or under the sediment, which causes the popping sounds.

Fix this issue by cleaning out or replacing the affected elements . If you hear more of a rumbling sound, it’s probably time for your annual flush out. Rumbling occurs when sediment is being stirred inside your tank.

It’s also possible that the noise is simply expansion and contraction in your unit’s expansion tank . This isn’t an issue and doesn’t need any maintenance.

Humming can indicate a loose element. Elements are typically placed vertically in your tank. The constantly-moving water can cause vibrations and the vibrations may loosen the elements. They can easily be tightened again with the right tools.

3. Screeching

Screeching or other high-pitched noises in your water heater can be caused by a valve that isn’t completely open.

The noise usually comes from the water trying to push itself through a small space, so this makes sense. Simply check your valves to make sure they are completely open.

Leaks are probably the most common and critical water heater problem you will need to deal with quickly. Minor leaks won’t cause much damage if you address them early on, but in time they can get worse and cause major problems.

The issue can depend on where your leak is located.

Leaking from the top can be due to the parts located on your tank’s lid. A leak from the bottom could be either the drain valve or your pressure relief valve. If, however, your tank has water on its sides, pinhole leaks or condensation could be the cause.

The pilot light of your water heater is what initially powers your system. In older heaters, your pilot light is the small blue flame in your power system (7) . Pilot lights provide the flame needed to get the gas working to power your gas water heater.

Most new systems don’t have a pilot light because they tend to waste a lot of gas. If you have an older system and don’t want to upgrade yet, here’s how you can relight your pilot light.

Tools you will need: A pair of pliers, a box of matches, and a flashlight.
Turn off your power supply: Wait about five minutes for all gas to clear the area. Once you can’t smell it anymore, you can proceed.
If you still smell gas: Call a professional as it could suggest an underlying issue elsewhere.
Open or remove your access panels.
Locate the pilot light tube: Once you do this, turn your power control knob from off to the pilot setting.
Light a match and place it at the end of the pilot light tube: While doing this, you need to press the reset button on the pilot light controls.
Wait until you see a flame: Keep the reset button held down for about 60 seconds of burning.
Release the reset button: Turn your power supply from pilot to on.
Put your access panels back on: Set your water heater’s thermostat to your desired temperature.

What Are the Common Problems for Water Heaters?

This depends on how old your water heater is. For a new unit, the most common problems are frozen pipes, which can occur at any time in cold regions, and leaks, which usually come from the pipes or connectors rather than the heater itself. As time passes, you will encounter wear and tear issues such as anode rods needing to be replaced and eventually the heater itself leaking, at which point it needs replacing entirely.

How Do I Know if My Hot Water Heater Is Going Bad?

If you notice changes in the flow of hot water, it could be a sign that something is wrong with your boiler. This is particularly true if the issue only affects the hot water and the cold water still flows as it always has. Discolored hot water is a sign that there is probably rust inside the pipes or heater unit, which is a serious problem if it occurs inside the unit itself.

How Long Should a Hot Water Heater Last?

The lifespan of a hot water heater will vary depending on the type of heater, the quality of its construction, the materials used, and how well it is maintained. A heater that is used rarely and carefully maintained will last longer than one that is used constantly and poorly maintained. In general, a traditional tank heater is expected to last eight to 12 years, while a modern tankless heater is expected to last 15 to 20.

Why Did My Water Heater Suddenly Stop Working?

When a water heater stops working, it could be due to several reasons. A damaged or loose in-line valve, damage to the pressure relief valve, a low supply of hot water, your water heater is not powered, there is a power cut-off throughout the house, or your gas supply has been cut off.

What Trips the Reset Button on a Hot Water Heater?

A trippy reset button on a water heater includes a loose electrical connection, a bad thermostat, a bad reset button, or a faulty heating element. Because you are dealing with 240 volts of electricity, attempting to diagnose this problem yourself is not only difficult but also dangerous.

Suppose you do not have experience working with wiring and other electrical components. In that case, we recommend you consult an expert rather than attempting to identify the exact problem on your own. But a qualified technician can do both an inspection and repairs on your water heater.

Why Is My Hot Water Not Working but My Cold Water Is?

If your hot water is not working, but your cold water is, you likely have a valve closed somewhere. Simply locate the valve and twist it to an open position.

How Do I Reset My Water Heater?

To reset your water heater, you have to locate the reset button. It is typically colored red and is frequently found close to the thermostat.

It might also be concealed behind a metal panel that can be removed from the device, and then again behind some insulation. When you locate the button, press it and then let go of it.

Many water heater issues can be avoided if you perform annual maintenance on your unit. Flushing your system at least once every 12 months will prevent too much sediment build-up. If you have a traditional tank, remember to replace your anode rods every few years.

No homeowner enjoys having to deal with issues when they arise. Knowing what to do when water heater problems occur will make fixing them much easier and far less stressful.

About the Author

5 Most Common Hot Water Heater Problems And Potential Solutions

Written by: Author Andrew Helling | Reviewed by: Editorial Team

Posted on Last updated: January 19, 2024

5 Most Common Hot Water Heater Problems And Potential Solutions

Hot water is one of those aspects of our lives that we take for granted—until our hot water heater has problems.

Read on to learn about common water heater problems and when they spell trouble ahead.

Have a Hot Water Heater Problem?

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Any issues with your water heater need to be solved as quickly as possible. Not doing so can lead to mold , mildew, damage to floors, and costly repairs .

Before you call a plumber, make sure you do an examination of the heater and take note of anything faulty, such as:

Mold or mildew around the heater
Condensation
Loose pipes
Loose drain valve

If you notice anything wrong with your water heater, you need to get it fixed immediately. By taking a closer look at your heater and writing down anything you observe, you can describe the problem to the plumber.

Getting your heater fixed is crucial for your safety and your finances. The longer you let an issue go, the worse it gets.

5 Common Hot Water Heater Problems

Several things can go wrong with a water heater, but some issues are more common than others. Below are some of the most common problems plumbers encounter.

Water heater leaking from bottom for a piece on common water heater problems

Michael Vi/Shutterstock

Most of the time, a leak is not challenging to see. The tricky part is finding the source of the leak. Unless you have water spurting from a hole in the tank, chances are you have noticed water pooling on the floor underneath the heater.

That said, there are several different places a water heater can leak. Some typical spots where leaks form in water heaters are:

Top of the heater – in older heaters, leakage from the pressure relief valve is a common issue. Be sure to check for the buildup of debris up there as well.
Supply valve broken cold water inlet or broken hot water outlet
Bottom of the tank – could be a leaking overflow pipe or drain valve.

If you notice water on your floor near your heater, put a cloth or paper towel down and check it a few times a day.

If something needs tightening, tighten the valve, and it should go away. If the water sticks around, call your plumber. The last thing you want is for your house to flood!

2. Temperature Problems

Left hand rotating a temperature knob on a water heater for a piece on water heater problems

Onlyshaynestockphoto/Shutterstock

Is your water too cold, lukewarm, or way too hot? You may be having water heater issues. If your water is too cold, it can mean that you have a:

Faulty thermostat
Low power source
Broken heating element

If your water gets mildly warm but not hot enough, chances are you have too small of a water heater. This problem can only be fixed by a professional. The most dangerous temperature issue by far, though, is water being too hot.

Not only is it bad for your heater, but it can also lead to scalding, severe burns, and mineral buildup.

The United States Department of Energy recommends having your thermostat set at 120 degrees Fahrenheit. Some heaters measure at 140 degrees , which runs up energy bills and increases the chances of future problems.

3. Water Discoloration

Dirty brown water running from a chrome faucet into a white sink

KariDesign/Shutterstock

Turning on your shower and seeing water that has any color is alarming, but entirely possible if you have a broken water heater. Your water heater may be producing discolored water due to:

Mineral sediment in the heater. The buildup is inevitable, so be sure to flush your heater at least once a year to prevent severe sediment buildup.
Rusting tank. If your cold water runs clear but your hot water is a rusty color, your water heater is reaching its final days, especially if you notice rust on the outside of the heater as well.

Mineral and sediment buildup is more dangerous than it sounds; it can cause your heater to overheat, leading it to rupture.

4. Strange Sounds and Smells

Pretty brunette woman covering her ears and looking up and to the right

file404/Shutterstock

Have you noticed that your water kind of smells like sulfur or rotten eggs?

Your water heater may be to blame. Warm water that is left in the tank for too long can grow bacteria. When bacteria start to develop, they create sulfate bacteria that emit a smell reminiscent of sulfur.

To be sure your water heater is causing the smell, turn on your cold water. If there is no scent, your water heater may be faulty.

Get this checked by a plumber immediately. If the sulfur smell is left alone, it can lead to fires and even cause your water heater to explode.

Sometimes broken water heaters make strange sounds as well. The most common complaints are a whining sound or a thumping sound. If your water heater is whining, it can mean:

It needs to be flushed
There is too much sediment in the water

If your heater is making a low, rumbling sound, it can mean:

Minerals are building up at the bottom of the tank
Water is trapped in the mineral buildup, causing it to boil and make a rumbling noise.

Both odd smells and sounds need an inspection to ensure your safety.

Things to Consider

Bare chested woman covering her shoulders with her hands in an x shape and shivering after her water heater had problems

LarsZ/Shutterstock

There are several things you should consider if there are issues with your water heater. Below are some suggestions on what to do and what not to do.

Find Out What Type of Water Heater You Have

There are two types of water heaters: gas and electric . Figuring out which one you have is simple. To determine which type of heater you have, you should:

Remove the access panel on the side of the heater. See a blue flame? You have a gas heater.
Look at the top of the heater. Is there a vent? If not, your heater is electric. Electric heaters don’t have vents because they never emit exhaust.

Clean Up Mold and Mildew

As previously mentioned, a broken water heater can destroy your floors and cause exponential damage. Check the area around the heater to ensure there is no mold forming.

Excessive mold growth can cause:

Breathing problems, especially in those with asthma
Stuffy nose
Red, itchy eyes
Worsened COPD

There is concern that mold may cause memory loss, lethargy, and heart problems in infants, but these conditions cannot yet be traced back to mold toxicity. Mildew is similar to mold but tends to grow more in bathrooms and showers and has a white appearance.

It causes similar problems like mold, too, with sinus irritation being the number one symptom. Don’t let mold continue to grow because of your water heater; it needs to be gone ASAP!

Consider Getting a Tankless Water Heater

A tankless heater could be the perfect option for you if you consistently have problems with your tank water heater.

Pros of Tankless Water Heaters

You’ll always have hot water
They aren’t as cumbersome as tank water heaters
Lower risk of leaks
Are not as dangerous as a tank heater
It uses less energy; your gas bill will be way lower

Cons of Tankless Water Heaters

The up-front expense is generally way more than that of a tank heater
Tankless heaters cost up to three times more than your average residential heater
Water takes longer to heat up
Multiple water sources cannot run hot water at once
No access to hot water during a power outage

Investing in a tankless heater may be worth it if you have a family with young kids, though. There is no risk of explosion, and they’re less of a safety risk than traditional water heaters.

Turn Off the Power

If your heater is leaking severely, turn off your power source. If you leave your power on, it can cause fires and waste energy.

Note that the heater won’t turn off on its own. You’ll need to turn off the gas yourself. After turning off your gas line, leave your home and only return once you can no longer smell gas.

What to Do if Your Heater Has Already Caused Damage

If you get home from work one day and you notice that water is everywhere (and that the source is coming from your heater), you should, after cutting the power:

Take photos of all damage to walls, furniture, floors, etc., for your insurance company
Move all not-damaged furniture and appliances out of the way to prevent further damage
Run a humidifier to prevent mold

Frequently Asked Questions

Water heater problems caused by a dirty heating element sitting next to tools

Steklo/Shutterstock

Dealing with something as challenging as a water heater is bound to stir up questions. Below are some of the most common questions people ask regarding their water heaters.

What are the signs of a water heater going bad?

Aside from the ones listed above, some other signs are reduced water flow and having a water heater that is ten years old or older.

Can a water heater explode?

Yes. Although uncommon, water heaters can explode under too much pressure or if they have severe sediment buildup or a broken anode rod.

Explosions are especially horrific if you have a gas leak in your home. The gas ignites with the water heater and causes detrimental damage.

Do water heaters give off carbon monoxide?

Carbon monoxide is only an issue with gas heaters that are not maintained. Broken vents are the most frequent cause of this problem.

How much does it typically cost to replace a water heater?

All companies are different, but you can expect the cost to be anywhere from $1,000 to $3,000.

How long does a water heater last?

The lifespan of a water heater is about twelve years. A tankless water heater can last up to twenty years if taken care of properly.

Where should a water heater be placed in the house?

That depends on the type of heater you have. Due to regulations, Gas heaters will not be in bedrooms, bathrooms, closets, or rooms attached to those locations.

Electric heaters, though, are safe to have in closets or other small areas.

When to Call a Pro

Smiling tech with a clipboard servicing a hot water heater that has problems

Minerva Studio/Shutterstock

When you have a broken water heater, we suggest leaving the troubleshooting to the pros. DIY’ing it can result in severe damage to yourself and your home.

In an emergency (such as water spraying everywhere), cover the leak or shut off the water main until a professional arrives.

But as another word of caution, choosing to fix your heater yourself can lead to:

Severe burns
Carbon monoxide poisoning
Electrical fires

Even if you consider yourself to be a handyman, the risk is just not worth it. If you think your water heater is on its last leg, call a professional.

They’ll install a new unit and give you additional options. At worst, they’ll give you a free bid.

A water heater that emits toxic materials could poison you or your loved ones. Even for a marginal issue, you should always call a professional for a second opinion. Doing so could potentially save you from property damage or worse.

Notice One of These Water Heater Problems?

Honestly, water heaters are scary. They hide away in corners and garages, and ignoring them is easy until a problem arises.

To avoid flooding, toxic fumes, and even an explosion, get your water heater flushed once a year and have it replaced every ten years.

When in doubt, never hesitate to call a professional whenever you notice one of these water heater problems.

We’ve spelled out the warning signs, and it’s up to you to recognize them and take action.

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Common Water Heater Problems And Troubleshooting Tips

water heater troubleshooting pennsylvania

Your water heater works hard behind the scenes in your home, providing hot water for your taps and appliances. But sometimes it works a little too hard, leading to problems that could require professional service.

Here are four common water heater problems, and some tips for what to do about each. Remember: always turn off power at the circuit breaker before doing any troubleshooting work on your water heater!

4 Most Common Water Heater Issues

Water is cold – Cold water is usually caused by either a lack of power, a faulty thermostat or a faulty heating element. Start by eliminating power as a suspect by resetting tripped circuit breakers and replacing blown fuses. Next, check power switches to make sure they are turned on and power indicators are lit. Finally, check the thermostat to make sure it’s receiving power.
Water is warm, but not hot enough – If your water isn’t getting hot enough, the cause could be an undersized water heater, crossed hot and cold connections, or a faulty heating element or thermostat. You can rule out a crossed connection by turning off the water supply and turning on a hot water faucet; if the water still flows, you could have a crossed connection. Beyond this, we recommend contacting a professional to check the water heater’s heating elements thermostat, and to assess whether your water heater is properly sized.
Water is too hot – When water is running too hot, it usually means the thermostat is set too high. See your water heater’s owners manual for adjusting thermostat temperature – the U.S. Department of Energy recommends a setting of 120° F for the best balance of heat and efficiency.
a faulty temperature and pressure (T&P) relief valve
improper water pressure
overheating
a stuck valve
a leak from nearby plumbing connection
loose heating element bolts
a bad gasket
a leaking water tank

Check for any obviously loose plumbing connections, tightening (but not over-tightening) them to reduce the leak.

Next, check the loose heating element bolts, tightening them if needed. If the heating element is still leaking, you will probably need to replace the gasket (we recommend hiring a professional to do this). Finally, check for leaks on or around the storage tank –since storage tanks typically corrode from the inside, you are probably seeing the beginning of the end for your water heater.

Of course, you can tank leak issues altogether by switching to a tankless water heater – the equipment lasts about twice as long, too, and takes up about one quarter of the space in your basement.

Discolored water – Rusty water can indicate corrosion of your tank’s inner lining, often caused by a failing anode rod. Contact a professional water heater technician to determine if replacing the anode rod will fix the problem; if not, replace your water heater .
Odd noises – Sediment build-up is most often the cause of odd noises coming from your water heater. You can attempt to fix this problem by flushing the water heater – see this video for tips about how to do this . If you flush your water heater and the problem persists, or if the sediment buildup is too great to remove, contact us – you may need a water heater replacement.

Need a water heater replacement or water heater service for your Pennsylvania home? Trust the pros at Oehlert Bros. Contact us today to learn more , or to get a FREE, no obligation estimate on a water heater upgrade!

Solving Common Water Heater Problems

Water heaters make sure we have hot water for showers and dishes. Sometimes they break down, and it can be annoying. You might find there’s no hot water, or the water isn’t warm enough.

Maybe you see your water heater leaking or the hot water looks strange. These are common problems people face with their heaters.

When your electric heater stops working right, a quick thing to do is check if the circuit breaker tripped off. If that’s not it, maybe the heating part inside needs replacing. Gas heaters can also stop making hot water if something is wrong with their flame or gas supply.

Sometimes you need to clean out your heater every year because stuff builds up at the bottom which can mess things up like giving you smelly or coloured water. And if your heater leaks, that could mean a part called a valve failed or other parts got loose over time.

Keeping an eye on your heater and fixing small issues helps it last longer so you won’t have to buy a new one too soon. It’s like how taking care of our teeth makes them strong for eating all kinds of food.

Our guide will show you how to fix these troubles yourself and teach you about putting in a new heater when needed. Stay warm!

Common Water Heater Issues

In the realm of household inconveniences, few are as disruptive as issues with your water heater. From the absence of hot showers to puzzling leaks, these common snags can cause more than a chill—they can lead to unwelcome surprises and disruptions in daily routines.

No hot water

If your water heater gives you cold showers, check the pilot light first. A blown-out pilot light on a gas water heater means no heat to warm your water. For electric heaters, tripped circuit breakers or blown fuses might be the troublemakers.

Sometimes, the heating element itself has failed and needs replacing.

A bad burner in a gas unit can stop hot water production too. Always ensure that the gas connection is secure and free from issues. If these quick checks don’t solve it, call a plumber who can spot problems like broken thermocouples or investigate deeper for power loss issues that might not be so obvious.

Inadequate hot water

Moving from a complete lack of hot water, another issue is not having enough of it. If your showers are suddenly turning chilly after a short time, this might signal that your water heater isn’t heating properly.

Several factors could be behind this problem. A broken thermostat or a faulty heating element can lead to insufficient hot water. It may also mean the water heater’s settings are not correct.

Check the temperature setting on your heater first; it should usually be between 120 and 140 degrees Fahrenheit for optimal performance. If the setting seems fine but you’re still facing issues, the heating elements or thermostat might need replacing.

For gas heaters, ensure there’s no problem with the burner or pilot light as these directly affect heating capacity. Regular maintenance like flushing out sediment buildup helps prevent problems with inadequate hot water too.

Unusual water temperature

If your hot water isn’t just low in quantity but also odd in temperature, you might have a problem with your thermostat or heating element. A broken thermostat can send wrong signals, making the water too hot or cold.

Sometimes it’s set incorrectly and needs adjusting to match what feels right for you.

Heating elements can fail too, causing water temperatures to drop. To fix this, check both elements in your storage water heater. If they are damaged or corroded, replace them to get consistent heat again.

Always make sure settings on thermostats reflect your personal comfort levels and usage patterns.

Leakage in the water heater

Shifting from temperature issues, water leaks can be just as troubling. Your water heater might leak for several reasons. A common cause is a failed pressure relief valve or loose drain valve.

Check these valves first – they might just need tightening or replacing.

Sediment build-up also leads to problems, causing tanks to corrode and leak. Look out for water pooling under the tank or dampness on pipes leading in and out of it; these are signs of leakage.

An old anode rod can be at fault too, so inspecting this rod regularly helps prevent leaks before they happen. Loose inlet and outlet connections should not be overlooked either – make sure they’re secure to stop any unwanted drips escaping from your system.

Discolouration of water

If your water heater spits out discoloured water, it could mean trouble. Rust or sediment build-up in the tank is often to blame. Your hot water might look rusty or have a brownish tinge.

This is a sign you need action.

Flushing the water heater can clear out sediment and mineral deposits that ruin your water’s colour. Sometimes corrosion inside the tank or pipes causes dirty-looking water too. Regularly cleaning your storage water heater helps stop these problems before they start.

If flushing doesn’t fix it, you may have corroded parts that need replacing to get clear water flowing again.

Troubleshooting Water Heater Problems

Navigating the maze of water heater woes, we delve into practical troubleshooting steps that ensure a swift return to cosy showers and effective heating. Equip yourself with the know-how to diagnose issues and execute fixes like a pro, sidestepping cold spells and murky waters.

Checking and correcting the water temperature

Water heaters sometimes fail to deliver hot water at the right temperature. Here is how you can troubleshoot and fix these temperature issues:

Dealing with leaks

Leaks in your water heater can cause trouble. Fix them promptly to avoid damage to your home.

Identify the source of the leak. Check around the pressure valve, drain valve, and inlet and outlet connections.
Tighten any loose fittings. Use a wrench to secure loose inlet or outlet connections and prevent water from escaping.
Examine the pressure valve. If it fails or if sediment builds up, it might need replacing.
Look at the drain valve. Make sure it’s fully closed; if it’s still leaking, consider getting a new one.
Replace old anode rods. An old rod can corrode and allow leaks; installing a fresh one helps stop this.
Install a thermal expansion tank if missing. Small or absent tanks often lead to leaks as they help manage pressure buildup.

Addressing discolouration

After sorting out any leaks, it’s crucial to focus on the water’s appearance. Discoloured water can be unsettling and might indicate a problem with your hot water heater.

Identify the colour of the discoloured water. If it’s yellow, brown, or reddish, this usually points to rust in your pipes or water heater.
Smell the water. A rotten egg odour suggests hydrogen sulfide gas, which bacteria produce when water sits too long in the tank.
Flush your hot water heater using a garden hose. This helps remove sediment and bacteria that cause discolouration and bad smells.
Inspect for limescale buildup if you have hard water. Limescale can change the color of your water and damage your heater over time.
Clean or replace the anode rod if rusty. This rod attracts corrosive elements and needs regular checks to keep your water clear.
Use a whole – house water filter to tackle discolouration issues before they enter your hot water system.
Regularly run taps and faucets that aren’t often used to prevent stagnant water that could lead to discoloration.
Check expiration dates on warranty documents for any covered repairs or replacements needed due to discolouration problems.

Comprehensive Guide to Installing a Water Heater

Choose the right water heater for your home. Consider whether you want a storage water heater or a tankless water heater, which provides hot water on demand without storing it.
Turn off the power supply. Before starting the installation, cut off electricity or gas to avoid accidents.
Prepare the area where you’ll install the new heater. Ensure it’s clean and that there’s enough space for installation and future maintenance.
Set up the temperature and pressure relief valve (T&P valve). This safety device keeps your tank from building up too much pressure.
Connect the cold water supply pipe to the inlet of your new water heater using suitable plumbing fixtures.
Fix the hot water outlet pipe from your heater to provide hot water throughout your home.
Attach a discharge pipe to the T&P valve as a route for any excess pressure or temperature discharge.
Secure all connections tightly to prevent leaks but do not overtighten which might damage threads or fittings
Fill up your tank or prime your tankless system by letting cold water flow in before turning on the power source.
Check for leaks once everything is connected; use soapy water around joints and look for bubbles that indicate escaping air or moisture.
Insulate pipes if necessary; this helps maintain water temperature as it travels through your house and can prevent pipes from freezing in colder climates.
If installing a gas unit, ensure ventilation is adequate to prevent carbon monoxide build – up, and install a carbon monoxide detector as an added safety measure.
Flush out debris by letting hot water run through until it runs clear, showing that no sediment or discoloured water remains in the system.
Adjust thermostat settings according to preferred temperatures but be cautious—setting it too high can lead to burns or energy wastage.
Test all heating elements in electric heaters by checking if they heat up properly once turned on, ensuring efficient operation of your new system.
Perform routine maintenance such as flushing the heater at least once annually to keep it running smoothly and extend its service life.

Preventative Maintenance for Water Heaters

Once your water heater is correctly installed, keeping it in good shape is crucial. Flush the system yearly to rid your tank or tankless model of gunk. This routine clears out sediments and minerals that can cause clogs or poor performance.

Check the breaker regularly to make sure everything’s running smoothly. Resetting the circuit might be all you need to do if there’s a hiccup with your hot water supply. Look over all parts, especially heating elements, for any wear and tear.

Fix issues quickly to keep leaks at bay and ensure a steady flow of clean, hot water through your pipes. Remember that well-maintained heaters are less likely to produce rusty water or strange smells.

Solving common water heater problems can save you time and stress. Get to know your appliance well and don’t ignore little issues. Regular checks and maintenance keep your hot water flowing.

Be proactive to ensure a warm shower is always ready when you are. Remember, a cared-for water heater means comfort at home every day.

For an in-depth look at fitting a new system, please refer to our comprehensive guide on installing a water heater .

1. How can I fix low hot water pressure in my home?

You can boost your hot water pressure by checking the water pipes for blockages or opting to flush the water heater to clear out sediment.

2. What should I do if my water heater is leaking?

Stop a leaking storage water heater by finding where it leaks and repairing it quickly. Sometimes parts corrode and need replacing.

3. Can tankless water heaters have problems too?

Yes, even tankless heaters face issues like mineral build-up which you must clean out regularly so that the heat doesn’t just evaporate away.

4. Why does my hot water run out fast?

If your hot water vanishes quickly, the problem could be with how your storage heater manages heat or sometimes because of a hidden exhaust issue.

4 Common Water Heater Problems With Easy Fixes

Hot water is a basic necessity in our everyday modern lives. We need it for showering, washing clothes, washing dishes, cleaning, and cooking. When there’s a problem with your water heater , finding a solution quickly moves to the top of your to-do list.

Read on to learn about common water heater problems that homeowners can easily fix.

1. Water is Too Hot or Too Cold

Changing the temperature of your hot water heater is perhaps the easiest problem to fix. It is simply a matter of finding the temperature control on your water heater.

Every water heater has a temperature dial on the front of the tank. Adjust it either up or down to change the temperature. A great way to save money while out of the house is to turn your water heater down to “low” or “vacation” mode.

2. Water Heater Pilot Light Is Out

The pilot light is the perpetual flame that is used to light the gas burner in the water tank. If this light is out, it may indicate a problem with your water heater. However, it’s always best to try and relight the pilot light first before jumping to any conclusions.

First, remove the access panel at the bottom of your tank to light the pilot light. If you smell gas, do not attempt to light the pilot. Instead, find the natural gas valve on the gas pipeline and move it perpendicular to the pipe. If you cannot find it quickly, evacuate the house and call your utility company to shut off the gas. Then, you’ll need to call a professional plumber to find and fix the gas problem.

If you don’t smell gas, you can proceed. Turn the temperature dial on your water heater to as low as it can go, and wait a few minutes to clear out the gas. This is important to stay safe.

Check for a dial labeled PILOT; this is your regulator valve. This may be a separate dial from the temperature control dial or combined into a single one.

Check to see if your water heater has an ignition switch or button. If it doesn’t, you’ll need a long-necked safety lighter. Set the pilot dial to PILOT. Press the ignition switch or use the lighter until the pilot flame is burning again. If you cannot get it to lit within 60 seconds, turn all the knobs off, wait five minutes, and try again. Excess built-up gas is dangerous to light.

Once the pilot light is lit, press the regulator valve knob down with a finger and maintain pressure for one minute. This allows the safety sensor to detect a pilot light. After a minute, release the knob and check that the pilot light stays lit, then turn the temperature knob to the ON position.

Then, adjust the water heater’s temperature valve and bring it up from the LOW setting. Most homes find peak efficiency and safety at 120 degrees Fahrenheit.

3. Water Heater Temperature Fluctuations

Hot water temperature fluctuations are common in aging water heaters. There are three main causes of water heater temperature fluctuations: too much sediment, a failing or dirty heating component, or a broken dip tube. Homeowners can deal with the first; the next two are probably best left to professionals.

If temperature fluctuations coincide with unusual popping noises, there’s probably too much sediment and scale buildup in the tank. Draining and cleaning the water heater is required. Once the water heater is emptied and the drain valve removed, the bottom of the water heater can be scrubbed with a long, thin brush.

A dirty or failing heating component, such as a dirty heat exchanger or faulty electric element, heats cold intake water intermittently at best. Inspecting, repairing, or replacing these parts is generally best left to your plumbing professional.

The dip tube directs cold intake water to the bottom of the water heater. A cracked or broken dip tube causes intake water to mix with stored hot water, which causes temperature fluctuations. When replacing the dip tube, your plumber should also replace the anode rod. The anode rod helps prevent tank corrosion that can cause water discoloration, odors, and rupture.

4. Water Heater Leaks Water

Water leaks should be taken very seriously. Water leaks either occur at the temperature and pressure (T&P) valve, parts with worn seals, or the water heater itself is leaking.

If the T&P valve is leaking or dripping, contact a plumber immediately to prevent catastrophe. Water pooling beneath the water heater signals an imminent rupture of a corroded tank and also necessitates a call to your plumber.

Leaky seals may leak so little water that they’re difficult to locate. Look for rust and corrosion on the outside of the water heater to identify the leaky part.

Expert Water Heater Plumbing Services

If your hot water isn’t so hot these days, please contact Apollo Home Heating, Cooling and Plumbing for top-quality Cincinnati plumbing services for water heaters. We can fix, maintain, and repair any brand or model of water heater in Cincinnati, Northern Kentucky, and Dayton, Ohio.

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Suburban Plumbing Blog

Plumbing articles from orange county, ca., diagnosing hot water heater problems.

WATER HEATERS

The average life of a hot water heater is about 10-18 years .

Unfortunately, there isn’t usually much warning that a hot water heater is about to go. Often, the first indication you’ll have is getting hit in the face with cold water during your morning shower. In other cases, you realize something is up when you step in a puddle caused by a leak.

So, if you’ve noticed that you’re having hot water heater problems, how can you figure out what the cause is?

Check out this guide to diagnosing a hot water heater malfunction to identify what repair you need.

Water Leaking

If you have a water heater with a tank , you may experience a problem where water leaks from either the bottom or the top of it.

If there is water leaking from the bottom, it could simply be because of normal condensation, but it could also be caused by a leak in the heating element gasket. Water leaking from the top of the water heater could be a sign of loose piping, or a problem with the inlet valve.

No Hot Water

It’s clearly a problem when you turn on the hot water faucet and only get room temperature water. What’s less clear is the cause of the problem.

In some cases, it might be a fairly simple fix. For instance, if you have an electric water heater, it could simply be a case of a tripped breaker. If resetting the breaker doesn’t help, the problem might be more serious.

There might be a part that needs to be replaced, such as the heating element. That said, depending on the age of your hot water heater, paying to repair it may not be worth the cost in the long run. If your water heater is at least 10 years old and you’re not getting hot water, it’s probably time to replace it.

Not Enough Hot Water

Sometimes, your water heater might be producing hot water, just not enough of it.

Anyone who grew up with siblings knows that someone can run all of the available hot water by spending too much time in the shower. But if your shower is turning lukewarm after only a few minutes, you could have a problem.

There are several potential causes for this problem. If it’s the winter time, it could be something as simple as it taking more time for the water to heat up because it is traveling through cold pipes. Or, you might have a problem with a faulty element or loose wiring.

In other cases, the problem might be with your thermostat. Your water heater has a setting on it that limits the maximum temperature water can be heated to. This is a safety feature to prevent burns.

If the temperature the water heater is set to is too low, the water might not feel hot enough. There could also be a calibration problem, where the temperature the thermostat is displaying is not the one it is actually set to.

Finally, depending on the size of your family, your hot water tank might just not be big enough. If you have multiple people showering every day, and are running the dishwasher and the washing machine, you need more capacity than a single person or a couple. You might want to consider a bigger tank or even a tankless water heater.

Water Takes Too Long to Reheat

As we mentioned above, if you’re using a water heater with a tank, it’s possible to exhaust the available heated water. That said, it shouldn’t take hours for you to get access to more hot water after this happens.

Electric water heaters typically take longer to heat water than gas ones, and older water heaters usually take longer than newer ones. if your water heater is taking far too long, it could be caused by a buildup of sediment on the heating element.

Water is Too Hot

On the other end of the spectrum, you may have a problem where the water temperature jumps from room temperature to scorching. This is usually because the temperature the thermostat is set to is too high. If lowering the temperature does not resolve the problem, the thermostat may need to be replaced.

Strange Noises

It’s normal to hear steam-like noises coming from your water heater as it heats water to temperature. But hearing popping, banging, and hissing sounds coming from the hot water heater is not normal.

Often, these noises are caused by a buildup of sediment. Sediment usually builds up on either the element or on the bottom of the water tank.

Sediment buildup is common if you live in an urban area with high mineral content in the water. If this is the case, you may need to have a plumber come and clean out the tank.

Rusty Water

No one wants to turn on the faucet at home and see brown water come out. If your hot water, in particular, is rusty, it could be caused by corrosion in the tank.

If left untreated, this corrosion could cause to a leak in the tank. The tank would then need to be replaced.

End Your Hot Water Heater Problems Today

If you’ve diagnosed your hot water heater problems, the next step is to get the repair you need. For this, you’ll want to bring in the professionals.

For any Orange County plumbing needs you have, contact us today. We’ll help you get your plumbing back in working order so you can enjoy hot showers again.

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Troubleshooting

If you want to find the solution to a problem, we offer several troubleshooting possibilities. Below are links to specific issues, as well as one to Tanklets. For 19 years, we ran a forum called The Tank. Eventually people stopped using it, but during that time, it had 5,000 topics and 20,000 posts. There is a good chance you can find your answer there.

Smelly Hot Water -- If your hot water smells like rotten eggs, here are some solutions.

Not Enough Hot Water -- This is one of the most common complaints. It can have several answers.

Tanklets -- This includes questions people asked us directly in the past when lesser volume did permit us to answer, and interesting posts from The Tank, including common issues people encounter again and again. It has an index that may help you drill down to what you're looking for.

Lingo -- To accompany The Tank, we made a glossary of water heater terms. It's useful if you're asking a water heater queston to know the lingo.

Quick -- Some quick solutions to common problems, plus counsels and warnings.

Consulting -- We understand that there are people who don't want to take the time to read what we've prepared. So consider buying a consultation. We sell physical products, of course, but the most valuable is knowledge that you can't find elsewhere. When you aren't sure what you need, we can help. If you're worried about people "just selling something," we don't do it that way. We gather information, consider what's best for you and tell you so. Occasionally, no product is needed. And if you do need one of our products, we'll refund the consultation fee if you purchase within 10 days.

Finally, if you have a maintenance emergency, you probably ought to call a plumber rather than wait for a solution from the Internet. If your problem involves a leaking water heater, we suggest you read up at Choosing a Water Heater so that if you have to replace one, you can make a wise choice.

COMMITMENT TO CUSTOMER SERVICE

3 common hot water heater problems & their solutions.

When you turn on your shower in the morning, does it take several minutes for the hot water to arrive? Do you get a cold shower if you are the last one in the house to get up? Is your hot water pressure less than ideal? You are not alone. These are some of the most common complaints among Framingham homeowners. Find out the causes and solutions to each of these common hot water heater problems by reading below or calling our expert Framingham plumbers today!

Problem #1: Water Takes Several Minutes To Heat Up

When you turn on the hot water faucet in your shower, kitchen or bathroom, do you have to wait for several minutes for the water to heat up? When we see this plumbing problem in Framingham area homes, the most common cause is a long distance between the faucet and the water heater.

Before you turn on the faucet, there is cold water in the pipes between the faucet and the water heater. The longer the distance between these two points, the more time it will take for you to get hot water.

One way you can avoid this problem is by brushing your teeth with hot water. This will allow the cold water to clear out of the pipes before you turn on your shower. Another option is to install a small point-of-use water heater in your bathroom.

Cause : Long run of plumbing/pipe
Solution : Install point-of-use tankless water heater

Problem #2: Hot Water Stops After Several Showers

If you live in a home with several people or regularly have guests over, you have probably noticed this problem. After several showers, your tank water heater runs out of hot water, leaving everyone else with cold showers.

There are really two solutions to this problem, both of which involve installing a new water heater . You can either install a larger tank water heater or upgrade your unit to a tankless water heater. A tankless water heater heats your water on demand, so you will not ever run out of hot water from too many showers.

Cause : Small tank water heater
Solution : Install larger tank water heater or tankless water heater

Tips & Insights: Why Does My Furnace Make a Loud Noise When It Is Turning On?

Problem #3: Low Hot Water Pressure

Although less common than the previous plumbing problems, this one is not unusual. Do you have great water pressure on the cold setting that gets progressively worse as you turn it to hot? Your hot water pipes may be clogged with deposited minerals.

Water contains dissolved minerals. The process of heating the water can often cause these minerals to deposit in your water heater tank or become lodged in your hot water pipes. To prevent this, you should have your water heater flushed annually. If you already have this problem, you probably need to contact a professional plumber to have them clear your pipes or perform some water heater maintenance in Framingham.

Cause : Clogged hot water pipes
Solution : Water heater flush and/or clearing of pipes

Water Heater Repair and Installation Services

Hot water is something we all take for granted, until it isn’t readily available. If you need help with a hot water problem, reach out to our team of technicians by phone at (508) 301-1767 to book an appointment. Our team of emergency plumbers in Natick, MA and other areas offer dependable water heater repair and replacement services for homes. Our professionals will diagnose the source of the issue and replace the damaged parts in your water heater. We are committed to restoring the distribution of warm water in your house.

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Water Heater Troubleshooting .css-85r32f{transition-property:var(--chakra-transition-property-common);transition-duration:var(--chakra-transition-duration-fast);transition-timing-function:var(--chakra-transition-easing-ease-out);cursor:pointer;-webkit-text-decoration:none;text-decoration:none;outline:2px solid transparent;outline-offset:2px;color:inherit;display:-webkit-inline-box;display:-webkit-inline-flex;display:-ms-inline-flexbox;display:inline-flex;place-items:center start;padding-left:var(--chakra-space-2);min-width:var(--chakra-sizes-7);}.css-85r32f:hover,.css-85r32f[data-hover]{-webkit-text-decoration:underline;text-decoration:underline;}.css-85r32f:focus-visible,.css-85r32f[data-focus-visible]{box-shadow:var(--chakra-shadows-outline);} .css-oy56l9{display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-align-items:center;-webkit-box-align:center;-ms-flex-align:center;align-items:center;height:55%;max-height:var(--chakra-sizes-4);color:var(--chakra-colors-gray-500);opacity:0;-webkit-transition:opacity 0.1s ease-in-out;transition:opacity 0.1s ease-in-out;}

Introduction.

Safety First! Before you begin, remember that safety is paramount. Always disconnect your Water Heater from the power source before attempting any repairs or diagnostics. This precaution is crucial to prevent electric shock or damage to your appliance.

Understanding Your Water Heater This guide covers various problems. We’ve broken down each problem into three key sections:

Problem: Identifies the specific issue you're experiencing.
Why It Happens: Provides a brief explanation of potential causes.
How to Fix: Offers step-by-step solutions to resolve the issue.

Ready to Tackle the Problem? Armed with this guide, you can approach Water Heater troubleshooting with confidence. Let’s dive in and get your water heater running smoothly again!

No Hot Water

Why it happens.

Could be power issues, wiring problems, tripped reset button, or faulty thermostats or heating elements.

Check Power Supply: Ensure the heater's getting the right voltage.
Wiring Inspection: Look for any loose or disconnected wires.
Reset Button: Press the reset button if it's popped out.
Thermostat and Element Test: With power off, use a multimeter to check thermostats and heating elements for continuity.

Not Enough Hot Water

Usage exceeds capacity, leaking pipes, sediment build-up, or thermostat issues.

Size Matters: Ensure your heater's big enough for your needs.
Element Check: Test the lower heating element for continuity.
Leak Hunt: Look for any dripping faucets or pipes.
Usage Monitoring: Make sure no one's overusing water.
Tank Cleaning: Drain and clean the tank, particularly around the lower element.
Lime Scale: Check for lime buildup on elements.
Thermostat Cycle Test: Run a test cycle on thermostats.
Temperature Settings: Make sure thermostats aren’t set too low.

Water Too Hot

Thermostat issues or a grounded element.

Thermostat Position: Ensure it’s properly attached to the tank.
Temperature Adjustment: Lower the thermostat setting if it's too high.
Cycle Test: Run a test cycle on the thermostat.
Grounded Element Check: Inspect for a grounded heating element.

Water Heater Element Failure

Loose connections, incorrect voltage, or element issues.

Connection Check: Tighten any loose or burned wiring connections.
Voltage Verification: Ensure correct voltage is reaching the elements.
Element Inspection: Test elements for continuity and check if they are grounded or shorted.

Discolored or Rusty Water

Sediment build-up, rusty water supply, high mineral content, or worn-out anode rod.

Tank Cleaning: Drain the tank and inspect for sediment.
Water Supply Check: Look at the color of the water supply.
Water Softness: Test the water for softness.
Mineral Deposits: Check for excessive minerals.
Anode Rod: Inspect and replace the anode rod if necessary.

Pilot light issues, gas leaks, or ventilation problems.

Check if the pilot light is on.
Inspect the gas supply line for leaks.
Ensure the ventilation system is clear and working properly.

Burner Won't Ignite

Gas supply off, blocked gas lines, or thermostat issues.

Ensure the gas supply is on.
Clear any debris from the gas and pilot lines.
Unblock any blockages in the line to the burner.
Check if the thermostat is set correctly.
Test and replace the thermocouple or thermostat if needed.
Verify proper installation and air supply.

Pilot Won't Light or Stay Lit

Gas supply issues, air in lines, or drafts.

Make sure the gas supply is on and check the gas pressure.
Purge air or debris from the gas lines.
Clean the pilot line and orifice.
Replace the thermocouple, thermostat, or ignitor if needed.
Shield pilot from drafts and clear intake air obstructions.
Check for flammable vapors.

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7 Tankless Water Heater Problems (and How to Solve Them)

December 13, 2023

Tankless water heaters are efficient, but they can have problems. In this essential read, we explore seven typical issues you might encounter.

Our solutions, backed by industry expertise, help you tackle these challenges head-on, ensuring a reliable and effective water heating experience.

Navigating Common Tankless Water Heater Challenges

Understanding the tankless water heater issues and knowing how to address them can significantly enhance your experience. Here are the seven most frequent problems to look out for:

1. Inconsistent Water Temperature

Problem: Users often report fluctuations in water temperature. This can be due to a number of reasons, such as overtaxed units or mineral build-up.

Solution: Regular maintenance, including descaling, can prevent mineral build-up. If the issue persists, check if your unit’s capacity matches your household’s hot water demands.

2. System Overload

Problem: Tankless water heaters, particularly electric tankless water heaters, can become overloaded if too many appliances are using hot water simultaneously.

Solution: Stagger the use of hot water appliances or consider having a new tankless water heater installation.

3. Cold Water Sandwich

Problem: This occurs when warm water is briefly followed by a burst of cold water, then warm again. It’s a common complaint in tankless systems.

Solution: This can be mitigated by installing a small buffer tank or a recirculation pump to maintain a constant flow of hot water.

4. Ignition Failure

Problem: If your tankless system, especially gas tankless water heaters, fails to ignite, it could be due to issues with the gas supply, the venting system, or the igniter itself.

Solution: Ensure that the gas is flowing properly and that the venting system is not blocked. If the problem persists, the igniter may need to be replaced.

5. Exhaust or Air Supply Blockage

Problem: Blockages in the air supply or exhaust gases, a common issue particularly in condensing tankless water heaters, can lead to system shutdowns.

Solution: Regularly inspect and clean the vents. Keep the area around the unit free of debris to prevent blockages.

6. Mineral Build-Up

Problem: In areas with hard water, mineral deposits can accumulate in the heat exchanger, affecting performance.

Solution: Flush and descale your natural gas/electric tankless water heater annually. Consider installing a water softener to reduce mineral content in your water supply.

7. System Leakage

Problem: Leakages can occur due to various reasons, including loose connections, corrosion, or a damaged unit.

Solution: Regular inspections can help identify potential leaks early. Tighten any loose connections and replace corroded parts. If the unit is damaged, consult with a professional for repairs or replacement.

Remember, regular maintenance is key to solving and preventing most tankless water heater problems. If you’re unsure about any issue, it’s always best to consult with a professional HVAC technician.

Frequently Asked Questions

Does a water heater fill up if i set the shower to cold.

No, a water heater does not fill up when you set the shower to cold. Cold water bypasses the water heater and comes directly from your plumbing. Water heaters are only engaged to heat water when being used, ensuring that it is available when needed.

How Do You Drain a Tankless Water Heater?

To drain a tankless water heater, first turn off the power and water supply to the unit. Then, connect a hose to the drain valve and open it to let water flow out. It’s important to perform this task periodically, especially in areas with hard water, to prevent mineral buildup and maintain efficiency.

Why Does My Hot Water Heater Run Cold So Quickly?

Your hot water heater, designed to provide on demand hot water, may run cold quickly due to an undersized unit or simultaneous demand from multiple appliances. If your heater is too small for your household’s needs, it can’t supply a continuous flow of hot water.

Additionally, using several hot water appliances at once can overtax the system. Upgrading to a larger unit or staggering the use of hot water appliances can resolve this issue.

Embrace Endless Comfort with All Weather

Seeking the best tankless water heater solutions? All Weather Heating & Air Conditioning is here to help. Our skilled professionals are committed to enhancing your home’s warmth and efficiency. Reach out now for expert service and maintenance.

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7 Common Water Heater Problems (& How to Fix Them)
WATER HEATER PROBLEM SOLVING
How to Troubleshoot Electric Hot Water Heater Problems
How to Troubleshoot Electric Hot Water Heater Problems
How to Troubleshoot Electric Hot Water Heater Problems
Water Heater Pilot Out

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Fixing A No Hot Water Issue For A Shower
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Why is my electric tankless water heater not hot enough?
Trouble shooting an electric hot water heater that has defective heating elements

COMMENTS

Here's How to Troubleshoot 4 Common Water Heater Problems
3. Restart your water heater. If your water heater is electric, try restarting it. Turn your heater off, wait two to five minutes, then turn it back on. Wait 30 minutes to see if your hot water ...
8 water heater problems and expert advice on how to fix them
Josh Mitchell is, a plumbing expert and HVAC technician and the owner of Air Conditioner Lab and Plumbing Lab. 2. Foul odors. If you notice a foul odor, such as a rotten egg smell, emanating from your hot water heater, don't ignore it. This water heater problem indicates potential issues with the water heater or water supply.
10 Common Water Heater Problems and Solutions
Learn why your water heater isn't working, plus how to fix basic problems such as no hot water, leaks, rust-colored water, and more. Follow the step-by-step instructions and tips from The Spruce experts.
No Hot Water
Learn how to fix your water heater or call a pro with this comprehensive guide. Find out how to relight a gas pilot light, reset an electric circuit breaker, and diagnose other common problems with hot water.
Solved! Why Is My Electric Water Heater Not Working?
A home with an undersized water heater can have problems producing adequate hot water for the home. A hot water tank must be comprised of at least 75 percent hot water to ensure efficiency.
Hot Water Heater Troubleshooting
Undersized water heater. Faulty thermostat. In this case, rule out electricity problems first. Check to see if there are any tripped circuit breakers, blown fuses, or the like. Then, check if power is running to the electric water heating thermostat; if that element is not working, replace it. Next, check to see if the water heater temperature ...
How to Diagnose Problems with a Hot Water Heating System
To help that, a pressure-reducing valve lessens the amount of water pressure from the city to the boiler. The pressure-reducing valve can be tested and a pressure gauge on the boiler will also indicate system pressure. An expansion tank reduces the stress on the system. The top portion is filled with water and the bottom air is under pressure.
Common Water Heater Problem Troubleshooting Guide
1. Leaking from the Top. The procedure to fix a leak from the top of a gas tank heater is the same as for an electric tank heater. Make sure to keep the cold water inlet turned on until you find the leak. Otherwise, you may end up lowering the water pressure enough to stop the leak — without fixing the problem!
No Hot Water? Follow These Troubleshooting Tips
Start by ensuring you have the right hot water heater for your needs, keep that heater well-maintained, and then if something goes awry anyway, run through a checklist of problem-solving steps to ...
7 Common Water Heater Problems: How to Fix Them
Key Takeaways. Common water heater issues include leaks, no hot water, and foul smells. Maintenance, such as flushing the system and replacing anode rods, can prevent many problems. Check valves and power supply when troubleshooting water heater issues. Consider consulting a professional for complex or electrical issues.
5 Most Common Hot Water Heater Problems & Potential Solutions
5 Common Hot Water Heater Problems. Several things can go wrong with a water heater, but some issues are more common than others. Below are some of the most common problems plumbers encounter. 1. Leaks. Michael Vi/Shutterstock. Most of the time, a leak is not challenging to see.
Common Water Heater Problems And Troubleshooting Tips
improper water pressure. overheating. a stuck valve. a leak from nearby plumbing connection. loose heating element bolts. a bad gasket. a leaking water tank. Check for any obviously loose plumbing connections, tightening (but not over-tightening) them to reduce the leak. Next, check the loose heating element bolts, tightening them if needed.
Solving Water Heater Problems: Effective Repair Tips
Final Insights On Water Heater Issues. Although water heater problems can be annoying to handle, you can successfully fix many of them with the right information and methods. By understanding the common issues with the unit, you can effectively maintain and repair your water heater, ensuring a steady supply of hot water for your family's needs.
Hot Water Heater Troubleshooting
Discover where to find your heater and what to check when you're facing a lack of hot water. We'll guide you step by step through the process, providing valu...
Quick Fixes: Solving Common Water Heater Problems
No hot water. If your water heater gives you cold showers, check the pilot light first. A blown-out pilot light on a gas water heater means no heat to warm your water. For electric heaters, tripped circuit breakers or blown fuses might be the troublemakers. Sometimes, the heating element itself has failed and needs replacing.
4 Common Water Heater Problems With Easy Fixes
A great way to save money while out of the house is to turn your water heater down to "low" or "vacation" mode. 2. Water Heater Pilot Light Is Out. The pilot light is the perpetual flame that is used to light the gas burner in the water tank. If this light is out, it may indicate a problem with your water heater.
The Most Common Hot Water Heater Problems and How to Solve Them
In some cases, it might be a fairly simple fix. For instance, if you have an electric water heater, it could simply be a case of a tripped breaker. If resetting the breaker doesn't help, the problem might be more serious. There might be a part that needs to be replaced, such as the heating element. That said, depending on the age of your hot ...
Common Tankless Water Heater Problems & How to Fix Them
Tankless water heaters are energy-efficient, have low maintenance costs, and are reasonably durable. But just like any appliance, they're not completely imm...
Solving Water Heater Problems
Smelly Hot Water -- If your hot water smells like rotten eggs, here are some solutions. Not Enough Hot Water -- This is one of the most common complaints. It can have several answers. Tanklets -- This includes questions people asked us directly in the past when lesser volume did permit us to answer, and interesting posts from The Tank ...
3 Common Hot Water Heater Problems & Their Solutions
If you need help with a hot water problem, reach out to our team of technicians by phone at (508) 301-1767 to book an appointment. Our team of emergency plumbers in Natick, MA and other areas offer dependable water heater repair and replacement services for homes. Our professionals will diagnose the source of the issue and replace the damaged ...
Water Heater Troubleshooting
Size Matters: Ensure your heater's big enough for your needs. Element Check: Test the lower heating element for continuity. Leak Hunt: Look for any dripping faucets or pipes. Usage Monitoring: Make sure no one's overusing water. Tank Cleaning: Drain and clean the tank, particularly around the lower element. Lime Scale: Check for lime buildup on elements. ...
The Top 8 Most Common Tankless Water Heater Problems and How to Fix Them
3. Ignition Failure. Another common problem with tankless water heaters is the failure of the ignition process. This issue could be caused by a damaged pilot light or clogged burner, which ...
7 Tankless Water Heater Problems and How to Solve Them
Problem: In areas with hard water, mineral deposits can accumulate in the heat exchanger, affecting performance. Solution: Flush and descale your natural gas/electric tankless water heater annually. Consider installing a water softener to reduce mineral content in your water supply. 7. System Leakage.
WATER HEATER PROBLEM SOLVING
Support this video by clicking on "thanks" and Donating. Thank you for considering!How to Light Your Water Heater: https://youtu.be/N2V4vFKDP6Y Make sure tha...

8 common water heater problems – and expert solutions on how to fix them

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Common Water Heater Problem Troubleshooting Guide

Tank Water Heater Problems

Tank Electric Water Heater Troubleshooting

1. Leaking from the Top

2. Leaking from the Bottom

3. No Hot Water

4. Insufficient Hot Water

5. Water Is Too Hot

6. Water Takes Too Long to Reheat