There are 4 basic methods how Geothermal or Ground Source Energy Systems tap into this alternative source of energy: 3 systems use a closed loop and one an open loop system.
Closed loop systems circulate a water-based solution through a "loop" of small diameter, underground pipes. In cold weather this solution absorbs heat from the Earth and carries it to the geothermal unit, where the heat is amplified and delivered throughout your house. In warm weather the process is reversed - excess heat is carried from your home and deposited into the Earth, keeping you refreshingly cool during the hottest summer.
A Geothermal Heat pump is an electrically powered system that taps the stored energy from the earth. These systems are Energy Efficient, Cost Effective, Reliable, Quiet, Safe, Clean, and Environmentally Friendly. Geothermal heat pumps use the earth's constant temperature to provide heating, cooling, and hot water for homes and commercial buildings.
Geothermal heat pumps are durable and require little maintenance, and they last up to 25 years or more. The geothermal heat pump, also known as the ground source heat pump, is a highly efficient renewable energy technology that is gaining wide acceptance for both residential and commercial applications. Geothermal heat pumps are used for space heating and cooling, as well as water heating.
The greatest advantage of these systems is that they work by concentrating naturally existing heat, rather than producing heat through combustion of fossil fuels. Installing a Geothermal system not only saves you money on your energy bills, but it also contributes to the efforts of reducing our overall fossil fuel consumption.