The MRCOOL GCSHPM048IN GeoCool Inverter 48K BTU Geothermal Heat Pump Compressor is a high-efficiency replacement compressor designed for compatible MRCOOL GeoCool geothermal heat pump systems. It works by circulating refrigerant through the heat pump cycle, transferring heat between the ground loop and the indoor space to provide reliable heating and cooling. Commonly used in resident... https://www.partshnc.com/mrcool-geocool-inverter-series-geothermal-heat-pump-compressor-gcshpm048in