An air handler is an important part of your HVAC system (Heating, Ventilation, and Air Conditioning). It’s usually located inside your home—often in a closet, attic, or basement—and its main job is to move air throughout the house.

The air handler pulls in air, either heats or cools it, and then pushes it through your home’s ductwork. This helps maintain the right temperature and keeps your indoor air comfortable year-round.

If you're using central home heating and cooling, chances are you have an air handler working behind the scenes to keep your indoor air circulation running smoothly.