ClimateMaster Tranquility 27, TTS 026. Unit in question. I am a commercial cooling tower / boiler water source guy I have a client having issues with his geo unit at home lives in Asheville, Nc. Heat transfer problems has a 300 foot well . Which was filled with well water. In my world that would most likely lead me to clogged coax on units or heat exchanger fouling. Does this apply to residential geo's? Should the closed loop be treated he states the only thing in water is an antifreeze... Any input would be great if more info is needed I will try to provide.