Water heaters are essential for modern households. Without them, it would be impossible to benefit from the convenience of hot water for showers, washing clothes, and cleaning dishes. But do you know that each water heater contains a lower and an upper thermostat?
Have you ever wondering what their purpose is? If the answer is yes, then this article is just for you.
Here, we will explore the purpose of the lower and upper thermostat in AO water heaters, as well as how they work by regulating the water temperature. So, fasten your seatbelts and get ready as we take a guided journey into the fascinating world of AO water heaters and its thermostats!
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What is use of lower and upper thermostat in AO water heater
An AO Smith water heater has two thermostats – a lower thermostat and an upper thermostat. Both these thermostats are different from each other and are responsible for regulating different aspects of a water heater’s heat output.
Lower thermostat
- The lower thermostat is responsible for controlling the output temperature of the water heater.
- It is usually set at 115°F, but the exact setting varies based on the model of your water heater.
- When the water heater is turned on, the lower thermostat senses the temperature inside the tank. It then turns on the power to the heating elements until the desired temperature is reached.
- The lower thermostat will then turn off the power to the heating elements until the temperature inside the tank drops below the desired set point.
Upper thermostat
- The upper thermostat is responsible for controlling the heat input to the water heater.
- It is usually set at 140°F, but the exact setting varies based on the model of your water heater.
- When the water heater is turned on, the upper thermostat senses the temperature inside the tank.
- It will then turn on the power to the heating elements until the temperature inside the tank reaches the desired set point.
- The upper thermostat will then turn off the power to the heating elements to prevent the water in the tank from getting too hot.
Overall
The use of both the lower and upper thermostats in an AO Smith water heater is to help maintain a safe temperature inside the tank and provide optimal heating performance. Together they ensure that the water heater does not overheat and keeps the water inside the tank at a comfortable temperature.