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.
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.
A recent study by the U.S. Environmental Protection Agency shows that geothermal systems have the lowest impact on our environment. They have no combustion or indoor air pollutants. Studies have shown, by installing or converting to a Geothermal Heat Pump System, it benefits our environment in reducing fossil fuels, and has the equivalent of removing two motor vehicles emissions or replacing 750 trees!
For many years, there have been articles published by some very reputable sources praising the environmental benefits of a geothermal heating and/or cooling system. With the rising cost of energy, and the need to be less dependent on fossil fuels, the benefits of geothermal systems are becoming more obvious to consumers and are voiced in the press more frequently.
Vertical Ground Loops are perhaps the most common earth coupling system, primarily because they make good use of limited space. Holes are drilled into the earth, and then a pair of High Density Polyethylene (HDPE) pipes, connected by a “U” bend at the bottom are inserted into each hole. The bore holes are sealed with an environmentally safe grout material to enhance the transfer of heat to and from the earth, and to protect the subterranean environment. The underground pipes are connected together and run neatly into the home and are connected to a Bosch geothermal heat pump.
Horizontal ground loops are often less expensive to install, but need more surface area. Rather than drilling, trenchers or excavators are used to dig 4 to 6 feet deep (or more), and loop variations ranging from single pipes to slinky style are laid at the bottom of the excavation. The piping is connected together, and run into the home for connection to a Bosch geothermal heat pump. The excavation is backfilled, and returned to its original condition.
Pond loops are often the least expensive application as a geothermal source. Though bodies of surface water fluctuate with ambient temperatures, these fluctuations are not as marked as actual ambient temperatures. This application is well-suited in situations where the body of water is large enough, and where boating, fishing, or other activities do not pose a risk to the loops. Pond loops can provide advantages to marine life.
Also referred to as “Pump to Reinjection” or “Class V Thermal Exchange Well”, these systems are often the best choice for cooling dominant climates (including residential) where the warm climate predominantly requires cooling, and commercial applications. A pair of boreholes is drilled, one as the source well, and one as the injection well, and the water is pumped from the aquifer through the geothermal heat pumps, and injected back into the aquifer with no chemical change.