The MRCOOL GCIK-CL3T-SM GeoCool Inverter Series 3 Ton Closed Loop Geothermal Installation Kit is an HVAC accessory designed to simplify the installation of compatible 3-ton GeoCool geothermal heat pump systems. It works by providing the essential connection components required to circulate heat-transfer fluid efficiently through a closed-loop geothermal system, ensuring reliable heat ... https://www.partshnc.com/mrcool-geocool-inverter-series-gcik-cl3t-sm