MRCOOL UAH18048-O Universal Series 48K BTU Air Handler is an indoor HVAC unit designed to distribute conditioned air efficiently throughout residential and light commercial ducted systems. It works by circulating air across the evaporator coil and delivering heated or cooled air through the ductwork when paired with a compatible heat pump or air conditioning system. https://www.partshnc.com/mrcool-universal-r-454b-uah18048-o