Heat pump reversing valves connect to compatible HVAC systems and provide a way to control the direction of refrigerant flow. During a heating cycle, the valve directs the refrigerant so it absorbs heat from the outside air and transfers it indoors. During a cooling cycle, the valve directs the refrigerant so it absorbs heat from the indoor air and transfers it outside to the outdoor air.

Heat pump solenoid coils connect to compatible reversing valves and change their position to ensure that the refrigerant is flowing in the correct direction, enabling the system to run in either heating or cooling mode.