How a Heat Pump Air Conditioner Works

Talking to customers about how a heat pump works in the winter and summer

How a Heat Pump Air Conditioner Works

Air Flow Cycle

A. Let’s start with the warm air coming out of the ductwork
B. After warming the room, the air returns into the ductwork
C. The return air goes through a filter to remove dust/pollen and is moved through the ductwork by a fan
D. The filtered air passes over a heating coil (heat exchanger) and the process repeats

Refrigerant Flow Cycle
1. The compressor in your outdoor unit pumps refrigerant coming from the outdoor coil after it has been warmed by the outdoor air
2. The warm, high pressure refrigerant is then pumped through the indoor coil where heat is transferred to warm up the indoor air as the fan moves the indoor air across it
3. The cooled refrigerant then returns to the outdoor unit
4. The refrigerant is warmed by outdoor air moving over the coil and the process repeats

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