The MRCOOL UAH18036-O Universal Series 36K BTU Air Handler is an indoor HVAC unit designed to efficiently distribute conditioned air throughout residential or light commercial spaces. It works with a compatible MRCOOL Universal Series heat pump system by receiving heated or cooled air and circulating it through the ductwork for consistent indoor comfort. This air handler is suitable for whole-home applications, renovations, additions, and multi-room environments. Its high-capacity 36,000 BTU design supports reliable temperature control, energy-efficient operation, and flexible installation, providing dependable year-round heating and cooling performance.