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Water Heater Thermostat Not Working? Time For A Temperature Check

Water heater thermostats help maintain a consistent water temperature in your home. When one breaks, your home’s water temperature can develop a mind of its own––so it’s time to check why your water heater thermostat is not working.

Check Your Water Heater Thermostat

Your water heater has two thermostats, one for each heating element. Over time, water heater thermostats may wear out or break from a power surge. If you suspect your water heater thermostat is not working properly, you’ll want to check it for any faults and have it replaced if it’s broken.

How to check your water heater thermostat

  • Once you're sure the circuit is off and no one will turn it back on, remove the metal cover near the top of the tank. Inside the cover you'll see the thermostat with a large red button. The reset button may have tripped.

    Push in on the red button and listen for a click. If it clicks, replace the cover, then turn the circuit breaker back on. When you put your ear up to the hot water heater, you should hear a humming sound.

  • Sometimes the click can be hard to hear. Try running some hot water, just in case it worked. If you have hot water, great! If not, and the thermostat trips again, it's time to replace your thermostat.

  • If you get hot water, but it runs out after a few minutes, the faulty thermostat may have caused an element to burn out.

If your water heater thermostat is working properly, but you still have no hot water or the water is too hot, consider other possible issues.

What to Do if Your Water Heater Thermostat's Not Working

Once you’ve determined your water heater thermostat is not working, you’ll want to call in a technician to replace the broken thermostat. The sooner you replace your water heater thermostat, the sooner your home’s water temperature will be back on track.

NOTE: This content is for informational purposes only, and HomeX and its affiliates disclaim all liability related to it. If you decide to perform any tasks based on this information, you assume all risks, including the risk of loss or damage to property or personal injury.

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