The MRCOOL GCIK-OL2-5-00 GeoCool Inverter Series 2–5 Ton Geothermal Heat Pump Open Loop Installation Kit is an HVAC accessory designed to simplify the installation of compatible GeoCool inverter geothermal heat pump systems. It works by providing the essential connection components required to circulate water through an open-loop geothermal system for efficient heat exchange. Commonly... https://www.partshnc.com/mrcoolgeocool-inverter-series-open-loop-installation-kit-for-2-5-ton-geothermal-heat-pumps-gcik-ol2-5-00