What is the main function of a thermostat in an HVAC system?

The main function of a thermostat in an HVAC system is to control the temperature within a space. It acts as a crucial component that enables the system to maintain a desired setpoint temperature for comfort. The thermostat achieves this by signaling to the HVAC system when to turn on or off the heating or cooling units, effectively regulating the indoor climate according to the preferences of the occupants.

By continuously monitoring the temperature of the air in the space, the thermostat ensures that the environment remains comfortable and energy-efficient. When the temperature rises above or falls below the setpoint, the thermostat triggers the heating or cooling system to adjust the temperature accordingly, maintaining a consistent indoor climate. This function is fundamental in making spaces comfortable and energy-efficient, illustrating why the thermostat is a vital part of any HVAC system.