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

The purpose of the thermostat in an HVAC system is to control temperature. It acts as the primary interface for the user to set desired temperature levels, and it continuously monitors the ambient temperature of the space. When the room temperature deviates from the set point, the thermostat signals the HVAC system to either heat or cool the environment in order to maintain the desired temperature.

This ability to regulate temperature makes the thermostat a vital component in creating a comfortable indoor environment, enhancing energy efficiency by avoiding unnecessary heating or cooling, and helping to maintain overall system performance. Other functions, like filtering air, removing humidity, and circulating air, are handled by different components within the HVAC system.