Question: Where Is The Thermostat In A Water Heater?

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..

What causes a water heater thermostat to burn up?

Other common causes include: A shorted heating element—It may be that the thermostat is working just fine and shutting off the heating element. Loose wiring—A loose wire in the water heater can generate heat that can cause the high-limit switch to trip.

Should both thermostats on water heater be set the same?

If your water heater has two thermostats, adjust both the same amount. The top thermostat should be a few degrees higher than the bottom.

Why are there two thermostats on a hot water heater?

An electric storage-tank-style water heater has two thermostats because it has two heating elements. The thermostats are designed so only one element is active at a time. The reason only one element is active at a time is because it allows for smaller wire sizes and lower amperage demand when in operation.

How does the thermostat on a water heater work?

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 water heater have a thermostat?

Depending on the gallon size of the tank, an electric water heater consists of one or two thermostats which regulate the temperature of the water. The thermostats work by turning the heating elements on when the water cools below a particular temperature.

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

Electric Thermostat – $150 to $200 The thermostat regulates the temperature in your water heater. If there is more heat needed, it will turn on the heating elements. Once water is warm enough, the elements are turned off. If you notice issues where you don’t get much warm water, it may be a thermostat issue.

Where is the thermostat located on a water heater?

On most gas water heaters, the gas control valve, which includes both a thermostat and a heat limiting device, are located on the outside of the unit, near the bottom.

What should a water heater thermostat be set at?

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.

How do I troubleshoot my electric water heater thermostat?

Start by ruling out power problems. First, reset any tripped circuit breaker, and replace any blown fuse. Next, check if power is being supplied to the electric water heating element thermostat. Test the element, and if it’s faulty, replace it.

Why do I have to keep resetting my hot water heater?

Reason #1: Bad thermostat The thermostat’s job is to monitor the temperature of the water in the tank and shut off the heating element when it reaches your set temperature. … This allows the element to keep heating the water until the reset button trips. If this is the problem, you’ll need to replace the thermostat.

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 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.

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.