What is the purpose of a thermostat in an HVAC system?

The primary purpose of a thermostat in an HVAC system is to control the temperature by regulating system operation. A thermostat acts as the central control device that senses the ambient temperature in a space. When the temperature deviates from the set point, the thermostat sends signals to the HVAC system, instructing it to either heat or cool the air to maintain the desired temperature.

This mechanism ensures comfort within the living or working environment by automatically adjusting the operation of heating and cooling components based on actual temperature readings. The effectiveness of the HVAC system in maintaining a consistent and comfortable climate in a building is largely reliant on the accurate functioning of the thermostat.

While other functions in an HVAC system, such as air distribution, air filtration, and humidity measurement, are important, they do not encompass the primary role of maintaining temperature control, which is the key function performed by the thermostat.