An air handler, or air handling unit (often abbreviated to AHU), is a device used to condition and circulate air as part of a heating, ventilating, and air-conditioning (HVAC) system. Usually, an air handler is a large metal box containing a blower, heating and/or cooling elements, filter racks or chambers, sound attenuators, and dampers. Air handlers usually connect to ductwork that distributes the conditioned air through the building, and returns it to the AHU. Sometimes AHUs discharge (supply) and admit (return) air directly to and from the space served, without ductwork.
The air handler is an important part of your air conditioning equipment. Its job is to effectively circulate conditioned air throughout your home. When matched with a heat pump, it circulates both cool and hot air, depending on the season. With properly sized Trane air handlers, your family has the right amount of clean, comfortable air all year round.
Trane air handlers make a significant contribution to the overall efficiency of your system. That’s because the more efficient your air handler is, the less work your outdoor unit has to do to make your home comfortable.