Geothermal heat pump: soil or pond?
Soon to be building and planning geothermal. Our geothermal guy is interested in using our nearby pond for the heat-exchange medium, rather than laying loops in the soil. Deepest spot in the pond is about 12 ft., size around 0.75 acres. Conditioned house size around 2300 sf. We're located in central VA and are more interested in AC than heating as we will have a woodstove for the latter. Pond has been in since 2001 and has never gone dry, but this year has certainly taxed it! Anyone out there with experience using water as the heat exchanger?