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Getting to Know Your Air Conditioning System: Part 4: The Thermostat

Getting to Know Your Air Conditioning System: Part 4: The Thermostat

Your thermostat is a heat-sensitive switch that regulates the temperature of your home. It responds to changes in the temperature surrounding it and turns the air conditioner on or off as needed to maintain the temperature at the set point.

The most important component of the thermostat is a bimetallic element, often in the form of a coil in modern thermostats, that expands or contracts as the temperature increases or decreases in your home. The contraction or expansion of the bimetallic element causes the electrical circuit in the thermostat to open or close, respectively. When the electrical circuit closes, the system turns on and starts running; once the system has reached the set point, it turns off again.

If this bimetal coil is improperly set, it will cause your thermostat to fall out of calibration.

If you believe you are having any problems with your thermostat or HVAC system, contact us for an appointment or ask us a question.

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