MRCOOL GCIK-CL2T-SM GeoCool Inverter Series 2 Ton Closed Loop Geothermal Installation Kit is a complete installation accessory designed for compatible closed-loop geothermal heat pump systems. It works by providing the essential connection and manifold components needed to circulate heat-transfer fluid efficiently between the ground loop and the geothermal unit. https://www.partshnc.com/mrcool-geocool-inverter-series-gcik-cl2t-sm