The MRCOOL GCSHPM048IN GeoCool Inverter 48K BTU Geothermal Heat Pump Compressor is a variable-speed compressor designed for compatible geothermal heat pump systems. It operates by circulating and compressing refrigerant within the system, enabling efficient heat transfer between the building and the ground loop for heating and cooling. Used in geothermal HVAC equipment, this compresso... https://www.partshnc.com/mrcool-geocool-inverter-series-geothermal-heat-pump-compressor-gcshpm048in