A geoexchange system provides hot water, heating and cooling for AFRESH Home, replacing the natural gas boiler. This retrofit system is a vertical closed loop borehole, installed with the assistance of BCIT Piping students. The system uses the thermal mass of the ground to heat or cool the liquid medium passing through the borehole piping. Warm or cool air is captured in the heat exchanger, and compressed or expanded in the heat pump to further increase or decrease air temperature. The geoexchange system has a high coefficient of performance (COP), indicating that it generates significantly more power than it takes to operate.