Quick Answer: How To Change Thermostat On Water Heater?

How do I know if my water heater thermostat is bad?

If you turn the hot water tap and cold water runs out, then the upper thermostat is damaged. But if the water is hot that becomes later becomes cold, then you have a damaged lower thermostat.

Do you have to drain a hot water heater to change the thermostat?

Always disconnect the power or shut off the breaker before doing any work on a water heater. To change thermostats, you will need to remove the access panel and safety cover (do this for both upper and lower access panels on dual element units).

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

The average thermostat replacement cost is between $100 and $300. Most other repairs are equally affordable. There are two main types: gas and electric.

How do I reset my water heater thermostat?

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. Once you find the button, push and release it.

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What trips the reset button on a hot water heater?

The reset button: a red button located on the water heater itself (just above the thermostat) that trips when the water temperature exceeds 180 F. The reset button is sometimes referred to as the “ECO” (emergency cut off) or “high limit switch”.

What causes a water heater thermostat to burn up?

Usually the cause of overheated water is a lower heating element that has a leak to ground. You need to turn power off to the heater. Disconnect both wires to both elements.

What should my hot water tank thermostat be set at?

The short answer: 120 degrees Fahrenheit. This is the preset thermostat temperature in most new water heaters, and it’s the recommended setting of the U.S. Department of Energy. At this temperature, harmful pathogens like the kind that cause Legionnaires’ disease are prevented from multiplying and may be killed.

Can you change a water heater element without draining the tank?

It is possible to change your water heater’s heating element without draining your tank. Although, keep in mind that it can be a bit more challenging.

What is the lifespan of a water heater?

Based on the manufacturer’s suggested service life, the life expectancy of a water heater is about eight to 12 years. That varies with the location and design of the unit, quality of installation, maintenance schedule and water quality.

Is 130 too hot for water heater?

Professionals recommend keeping your water heater set at a temperature between 130 and 140 degrees Fahrenheit. Any higher, or lower, could actually be dangerous for you and your family. While turning the temperature up higher can result in burns, turning it lower than the recommended setting can also be dangerous.

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Should both thermostats on water heater be set the same?

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.

How do I test my thermostat?

Raise the thermostat heat settings slowly. The thermostat should emit a clicking sound and the furnace should also make a sound. If the furnace does not make a sound, the thermostat is not sending a signal and needs to be replaced. Turn off the breaker to your furnace.

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