What is an air handler?

An air handler is a device used in heating, ventilation, and air conditioning (HVAC) systems to circulate and condition air within a building. It is typically located inside a building and consists of a blower, heating or cooling elements, a filter, and dampers or valves to control the flow of air.

Air handlers work in conjunction with air conditioning units, heat pumps, or furnaces to distribute conditioned air throughout a building. The blower in the air handler draws in air from the building through a return duct, passes it through the heating or cooling elements to adjust the temperature, and then pushes the conditioned air back out through supply ducts to different areas of the building.

Air handlers also play a crucial role in maintaining indoor air quality by filtering out dust, pollen, and other particles from the air. Some air handlers also have humidifiers or dehumidifiers to adjust the moisture levels in the air.

Overall, air handlers are an essential component of HVAC systems, helping to ensure that buildings are comfortable, healthy, and energy-efficient.