How Does a Honeywell Thermostat Heater Work?

Written by geoffrey st. marie
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Honeywell produces a number of thermostats for heating and cooling applications. How the thermostat works depends on the model, as well as on what element is providing the fuel.


The basic function of a Honeywell thermostat is similar to that of any other, in principle. You program the thermostat to maintain a constant temperature, then, depending on external/internal temperature, the thermostat will command the fuel source--such as a furnace--to alter the supply or flow of heat accordingly.


First you must make sure that you address the Honeywell manual, which will show you how to make your thermostat compatible with the fuel source you use--oil, natural gas, electric or other. The electrical wires from the fuel source are connected to the thermostat, which is generally affixed to a wall through the use of a wall plate.

Other Considerations

Like most thermostats, Honeywell's will be sensitive to certain positions that can affect proper functioning. They shouldn't, for example, be placed next to considerable drafts, air ducts, chimneys or locations that experience heavy sun exposure. This could cause the device to misread temperature levels. Honeywell also suggests--at least for some models--that they be a minimum of 5 feet off the ground when mounted.

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