How Do You Fix A Thermostat On A Hot Water Heater?

How do you check a thermostat on a hot water heater?

How to Troubleshoot a Defective Thermostat on An Electric Water HeaterHead to the circuit breaker and turn off the power to the thermostat.

Pull out the two panels that protect the thermostat.

Locate a plastic panel on the thermostat and heating element.

Check for a “snapping” movement as you push the button.More items….

How do I know if my thermostat is working properly?

4 signs your thermostat is badSign #1: Your thermostat has no power or is unresponsive. … Sign #2: Your heater or A/C won’t turn ON. … Sign #3: Your A/C or heater runs constantly and won’t turn OFF. … Sign #4: Room temperature and setting don’t match. … Step #1: Make sure thermostat is on the right setting.More items…•

What is the best temperature for a hot water heater?

120 degrees FahrenheitThe Consumer Product Safety Commission (CPSC) recommends setting the water heater at no more than 120 degrees Fahrenheit (49 degrees Celsius) to prevent scalding. Not to mention, a water heater that is set too high can unnecessarily increase your electricity bill.

Does my hot water tank have a thermostat?

Thermostats are usually installed about one third of the way up the hot water cylinder. They measure the temperature of the water inside and if this falls below the required temperature (usually 60-65°C), the boiler will come on.

What is the maximum temperature for a hot water heater?

120 degrees FahrenheitYou see, back in 1988, the Consumer Product Safety Commission recommended that water heater manufacturers preset the maximum temperature at 120 degrees Fahrenheit to prevent burns.

What causes a water heater thermostat to burn up?

A shorted heating element—It may be that the thermostat is working just fine and shutting off the heating element. But a short in the element is causing it to continue to heat your water. Loose wiring—A loose wire in the water heater can generate heat that can cause the high-limit switch to trip.

What are the symptoms of a bad thermostat?

Symptoms of a Bad or Failing ThermostatTemperature gauge reading very high and engine overheating. The first and potentially most alarming symptom will be the temperature gauge reading high into the red within the first 15 minutes of your vehicle engine running. … Temperature changing erratically. … Coolant leaks around the thermostat housing or under the vehicle.

How does a thermostat work on a hot water heater?

The thermostat is a thermistor that responds to heat by producing a small electric current. The current increases when water temperature increases, and drops when temperature drops. Changes in the electric current cause gas control to turn ON and OFF. When gas control turns ON, it releases gas to burner.

Does a hot water heater have a reset button?

Somewhere on your electric water heater, you’ll find a reset button. It’s usually red and often located near the thermostat. It may also be hidden behind a removable metal panel on the unit—and then behind some insulation. … If your water heater now has power, you’re all set.

Can you replace the thermostat on a gas water heater?

Thermostat on Gas Valve Is Not Working The water heater thermostat is part of the gas valve. They cannot be replaced separately from the valve.

Should both thermostats on water heater?

The majority of electric water heaters have two thermostats: an upper and a lower, located under two control panels. To ensure your electric water heater works as efficiently as possible, you should set both of the thermostats at the same temperature.

Why are there two thermostats on a hot water heater?

A dual-element water heater uses two heating elements controlled by two separate thermostats. When it reaches a specified temperature, it shuts off, and the lower heating element takes over, heating the rest of the water. This is an efficient, money-saving feature, as the water is heated in a consistent manner.

Can a thermostat go bad on a hot water heater?

Usually, when the upper thermostat goes bad, you will have no hot water at all, while a bad lower thermostat makes itself known when there is only a small amount of hot water before the tap water goes cold. … Once you have determined the faulty thermostat, you can replace it and have your hot water heater working again.

How much does a thermostat for a hot water heater cost?

The average thermostat replacement cost is between $100 and $300. Most other repairs are equally affordable. There are two main types: gas and electric. A gas unit works by way of a gas flame while an electric one works using electric elements, or coils.

How long does a water heater thermostat last?

between 6 to 13 yearsYour system is old: On average, your hot water heater should last anywhere between 6 to 13 years.