How does the upper thermostat on a water heater work?

The upper thermostat acts as a coordinator between the two elements. When the water in the top part to the tank is hot enough, it lets the lower thermostat go into action. When the lower thermostat senses the water is too cool it turns on the lower element.

Are all electric water heater thermostats the same?

Almost all residential water heater thermostats are interchangeable. However, a single element water heater thermostats will not work on a double element water heater.

How long should a hot water heater thermostat last?

between 6 and 13 years
It would be nice to know when the time is right to replace your water before it springs a leak and causes an inconvenience or worse yet, damage to your home. Typically a residential hot water heater lasts between 6 and 13 years. Beyond 12 years, you are on borrowed time!

How much is a thermostat for an electric water heater?

The average thermostat replacement cost is between $100 and $300.

How does the thermostat work on an electric water heater?

An electric heater with a storage tank of at least 30 gallons comes with two heating elements with a thermostat on each of them. The thermostat on top acts as the primary one while having a high limit switch. But the lower one detects any change in the temperature of the water.

How can I test my hot water thermostat?

Replace the chamber panel and insulation of the thermostat. Reconnect the circuit to its power source by activating the circuit breaker. Switch on the water heater for two hours, then run the hot water faucet to see if the water is well heated. Troubleshooting the thermostat on your water heater might look difficult.

Where is the high limit switch on a water heater?

The high limit switch is found on the location as the upper thermostat. It also has a button that stops it from working, especially when the water goes above 170F. To restore it to default settings, press this button. To set the thermostat on a water heater, you will need to adjust both thermostats to similar temperatures.

Can a damaged thermostat be used on a hot water heater?

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. However, you will need to know how to test a water heater thermostat to find the faulty unit.