The MRCOOL UAH18024-O Universal Series 24K BTU Air Handler is an indoor HVAC unit designed for compatible MRCOOL Universal Series heat pump systems. It works with the outdoor heat pump condenser by circulating refrigerant through the indoor coil while its blower distributes conditioned air through the ductwork. Designed for 24,000 BTU applications, this air handler provides both heati... https://www.partshnc.com/mrcool-universal-r-454b-24k-btu-air-handler-uah18024-o