The MRCOOL HAH15048 ProDirect Series 4 Ton Split System Multiposition A/C Air Handler is a high-performance indoor HVAC unit designed to distribute conditioned air efficiently throughout central split system applications. It works by drawing air across the evaporator coil and circulating cooled air through the ductwork when paired with a compatible outdoor air conditioning condenser. ... https://www.partshnc.com/mrcool-prodirect-air-handler-hah15048