The answer to 'how does air handler work' is an air handler is a key component of a central HVAC system that circulates air throughout a home. It contains a blower fan that draws in air from the return ducts, passes it over a heating or cooling coil, and then pushes the conditioned air out through the supply ducts and into the living spaces. The air handler is responsible for moving the air and ensuring proper airflow, temperature, and humidity levels in the home.
Air handlers come in different sizes and configurations to match the heating and cooling needs of a home. They may be installed in the attic, basement, or a utility closet, and are connected to the ductwork that distributes the air. The air handler works in coordination with other HVAC components like the furnace or air conditioner to heat or cool the air as needed.