What is an Air Handler?
An air handler is a component of your central heating and cooling system that circulates air through your ductwork. Sometimes people refer to the air handler as the “blower,” but the blower motor is a part of the air handler.
An air handler is a piece of your central HVAC system. It attaches to your air conditioner, furnace (or heat pump), and plenums, leading to your ductwork.
Your air handler takes the warmed or cooled air created by your HVAC equipment and blows it into the supply plenum, which connects to your air ducts. Your ductwork distributes the treated air throughout your home.
Your air handler also connects to your return plenum, which takes air from inside your home and brings it into your HVAC system. Depending on the season, the air handler pushes that air to either your air conditioner or furnace, where it’s heated or cooled.