What is an air handler's function in an HVAC system?

The function of an air handler in an HVAC system is primarily to circulate and condition air. Air handlers are essential components that take in air from the environment, often through an intake system, and then distribute it throughout a building to ensure proper ventilation and climate control.

Conditioning the air involves processes such as heating or cooling, as well as humidity control, making it comfortable for occupants. The air handler usually contains various elements such as fans, heating and cooling coils, and sometimes filters to clean the air before it enters the living spaces.

While filtering air pollutants is indeed a part of the air handling process, it is a subset of the broader function of circulating and conditioning air. The air handler's main role encompasses the overall movement and treatment of air within the HVAC system, which is critical for maintaining indoor air quality and comfort levels.