If you’re reading this article, you likely had an unexpected cold shower or turned the sink on to find that there is no hot water in your house. Don't panic if you’re in this situation. We’re here to help you know what to check if you have no hot water.

The first place to look is your hot water heater. Whether you have a unit from York, Lennox, or Carrier, the root cause could be found within the system itself, a gas issue, or an electrical issue.

Why is My Hot Water Not Working?

Here are nine potential reasons your water heater isn’t producing hot water. When you’re ready, call the ARS® experts at 866-399-2885!

1. Gas Leak

A gas line leak can be a serious fire hazard and prevent your water heater from working. Inspect all connections for leaks if your gas water heater is not producing hot water.

This process should include shutting off the main valve, letting the faucets continue to drip, and feeling all pipes for wetness or any unusual odor coming from the gas supply.

If anything suspicious with your gas supply is found, it can be extremely dangerous. If you notice a “rotten egg” gas smell in your home, you might have a line leak. Get out of your home and call the police right away.

Here’s what you should do:

• Close off the gas valves at your house.

• Do not attempt to use your phone until you are at a safe distance from your home.

• Household electrical appliances, including refrigerators and stoves, should not be switched on or off.

• Do not smoke or use a lighted match.

• Call the police and the gas utility company after you’ve relocated a safe distance away from your house.

• Do not attempt to repair the line.

If you need professional gas line repair, contact ARS/Rescue Rooter at 866-399-2885, as our expert emergency plumbers can also repair gas lines.

2. Leaking Water Heater Tank

If there is no hot water, and you see water on the ground around the base of the hot water tank, it’s probably because you have a leaking tank.

An empty tank poses a significant hazard and can waste dozens of gallons of water a month. Plus, it might be causing your cold water issue. Examine the appliance’s connections as well as those of its valves, as well as the pipes themselves. If they’re secure, check the compartment of the tank.

There’s a good chance that your machine needs to be replaced if there is no water in the compartment.

Read more about why your hot water is leaking here.

3. Gas Valve Failure

If you have a gas water heater and it's not working, check the gas inlet valve and gas supply tube. If there are no leaks, inspect the gas valve. It must be secure and in the correct position. Then double-check that the gas is turned on.

Investigate the pilot light if the gas valve is working properly. You may have to relight the pilot numerous times. It must be kept burning. If it isn’t, the gas supply might be restricted because the gas line is obstructed.

If none of these procedures work, it’s time to purchase a newer and more energy-efficient water heater. To be sure, contact a plumbing specialist.

4. Pilot Light is Out

If your hot water faucet has gone cold, the pilot light, on your water heater may be out. When the pilot light goes out, the water heater may not have enough gas pressure to heat up the water until it reaches a certain temperature, which could take hours. When this occurs, there are typically warning signs that the pilot light has gone out.

Even though most modern heaters no longer have pilot lights, you should be aware that they now feature glow plugs or spark ignitors instead. If this is the case for you, you may need to contact a professional.

If your water heater has a pilot light, check to see whether there are any marks on the burner. If you can’t discover any, try this easy technique!

• While waiting for the gas to dissipate, turn off the regulator for 5 minutes or more. Afterward, move your regulator to “pilot” mode.

• If your water heater has a self-ignition ability, you should hold down the ignition knob for at least 60 seconds. After that, change the setting on your regulator to “on.”

• If you must relight the pilot with a flame, use a long lighter. While holding the lighter over your gas supply tube, turn it on. This should be sufficient to relight your pilot light.

If the pilot light does not ignite, check to see whether the gas inlet valve is open. If it isn’t, turn the handle on the gas inlet valve until it reaches the same distance as the gas line. Allow for some time so that the gas may enter before attempting to relight your pilot. If you’re having trouble, give us a call, and we’ll be happy to help!

5. Electric Water Heater Malfunction

If you have an electric water heater, you may have an electrical issue--not a water heater issue.

One way to test this is to substitute the primary energy source from wall outlets with another electronic device that has its own internal battery backup system. If switching power sources does not turn on any heated taps, there is no electricity flowing to your electric water heater.

The lack of hot water can often be resolved by looking for loose connections to the water heater and resetting any fuses in the circuit breaker box that may have tripped. After about an hour, your home will be supplied with warm water again if the breaker tripped.

A bad signal is indicated by a circuit breaker that continues to trip, so push the reset button. If there’s still an issue, don’t hesitate to contact an ARS/Rescue Rooter electrician at 866-399-2885.

6. Thermostat Malfunction

If there is no change or the supply is insufficient, check the thermostat. In order for a water heater to produce heated water while being energy efficient, the thermostat should be set between 122 and 140 degrees Fahrenheit. Check the upper thermostat if there is no hot water, the supply is insufficient, or too hot.

If the thermostat is damaged, it should be replaced. Even if the thermostat is set correctly, a lack of regular maintenance can lead to problems because of sediment accumulation. To eliminate this, drain and clean your water heater.

A tripped high-temperature cutoff switch, for example, is one of the most common reasons why hot water does not enter your house. You can repair it by flipping the switch and pushing a button.

If you press the reset button, you should hear a clicking sound, and then power will return to the water heater. If the high-temperature cutoff is incorrect and requires replacement, it’s probably because the electricity hasn’t been restored.

7. Faulty Heating Element

The heating elements might be the cause of your problem if no hot water runs in your house. Water heaters only last 10 years, and replacing one is preferable to repairing an old one. If you replace your heating elements, make sure you completely turn off your water heater.

8. Water Heater Tank Size

If your tank is too small, it will not be able to store enough hot water for your household's needs. If this is the case, you’ll need a bigger water heater tank.

It's true that an electric water heater takes longer to heat up than a gas water heater. If this is the case, you’ll need a bigger non-heated storage unit; it should solve the problem of no hot water.

9. Local Weather Forecast

In the winter, your water heater tank's energy efficiency and performance might be reduced by cold temperatures. Insulating the tank is the best solution to help maintain its efficiency and performance. The time it takes a water heater to recover depends on whether it’s a gas or electric model:

• Gas water heaters recover in about half the time of electric water heaters.

• A 40-gallon gas water heater takes approximately 30-40 minutes to recover.

• A 40-gallon electric water heater recovers in about 60-80 minutes, which is roughly twice as long as a gas one.

The quickest way to have hot water again is not to use any hot water during the recovery process. This allows your heater to fill and heat the water uninterrupted.

If you draw water during recovery, you’ll be adding cold water to the tank, which will extend the time it takes to fully recover. Drawing water too early might result in lukewarm water or just a few minutes of hot water before it cools down again.

Sometimes a repair isn’t enough, and you may need a new water heater installation.

Read more about the signs you can benefit from a new water heater installation.

How Do You Reset Your Hot Water Heater?

If your gas hot water heater needs to be relit, you may need to do it. If there is a reset button on an electric hot water heater, press it; if not, unplug the device for a few minutes and then reconnect it. If that doesn’t work, reset the circuit breaker for the hot water heater.

What is the Most Reliable Type of Water Heater?

Tankless water heaters are popular among customers. These water heaters have a smaller number of moving components that can wear down with time, and their parts are only utilized when needed to provide hot water on demand, rather than constantly, as in the case of storage tank water heaters.

Regular maintenance also helps your water heater to run properly and remain reliable. You can find maintenance tips to extend the life of your water heater here.

Still No Hot Water? Call ARS/Rescue Rooter

If your Hot water is still not working, call the national plumbing experts at ARS/Rescue Rooter. From gas line services to water heater repair and installation, our local plumbers have the skills and expertise to diagnose the root cause to your hot water problem.

At ARS/Rescue Rooter, we offer flexible financing options to suit your needs and a 100% satisfaction guarantee on all our services, ensuring peace of mind with every repair or installation.

Call our plumbers at 866-399-2885 or find your nearest ARS/Rescue Rooter location to schedule service today!