The MRCOOL GCIK-CL2T-SM GeoCool Inverter Series 2 Ton Closed Loop Geothermal Installation Kit is an accessory package designed to support installation of compatible closed-loop geothermal heat pump systems. It works by providing the necessary components to connect the ground loop to the geothermal heat pump, allowing efficient circulation of heat-transfer fluid for heating and cooling... https://www.partshnc.com/mrcool-geocool-inverter-series-gcik-cl2t-sm