Video: geothermal benefits explained
Homebuilders and owners looking for new energy efficiency options are turning to geothermal heating and cooling.
A geothermal heat pump (GHP) taps into the renewable solar energy stored in the ground to provide savings up to 70% on bills.
At the 2016 AHR Expo, Sean Dillon, director of dealer sales for WaterFurnace International, discussed some of the unique aspects of geothermal compared to traditional methods of heating and cooling a home.
Using a series of underground pipes, a geothermal or ground source heat pump (GHP) exchanges heat with the earth instead of outdoor air. While air temperatures can vary greatly from day to night or winter to summer, the temperature just a few feet below the earth’s surface stays an average 55°-70°F year-round.
As outdoor temperatures rise, a GHP collects the unwanted heat in your home and moves it to the cooler 55° earth. Meanwhile, ordinary heat pumps and air conditioners are forced to dump that heat outside. Unfortunately, hot summer air is already saturated with heat and is less willing to accept more. That makes ordinary cooling systems least efficient when you need them to be the most efficient.
As outdoor temperatures fall, a GHP draws from an underground reservoir of heat, concentrates it, and moves it to your home. Meanwhile, an ordinary heat pump is forced to collect heat from frigid winter air, making it least efficient when you need it to be the most efficient. And unlike a furnace, our units don’t create heat through combustion. They simply collect and move it.
Read more about geothermal heating and cooling.
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