Ground source heating and cooling is a high-comfort, cost-effective, and environmentally friendly technology that takes advantage of the Earth’s capacity to store energy in the form of heat. Geothermal heat pump systems use no fuel, but rather move heat from the earth into a building, or from a building back into the earth. We call this GeoExchange! A small amount of electricity is used to operate the pumps, fans, controls, and small refrigerator-like compressor, which along with the heat exchangers are the major components of the ground source heat pump.