Geothermal Heat Pump
A geothermal heat pump is not only the highest efficiency heating and cooling system available, it also uses a renewable energy source - the earth. A geothermal heat pump uses the constant temperature of the earth to heat and cool. This allows the system to reach high efficiencies even on the coldest winter nights. Water circulates through a network of durable plastic loop pipe that is buried in the ground which absorbs earth's energy. A heat pump, connected to the loop pipe, extracts that energy and converts it into heat. At the flip of a switch, the process can be reversed to cool your home.
A geothermal heat pump loop pipe can be installed vertical, horizontal, or even in ponds. In some cases, well water can be circulated directly through the heat pump, eliminating the need for the loop pipe.