How Geothermal Works
Geothermal heating and cooling systems are the most efficient and environmentally friendly systems on the market today. These systems work differently than conventional systems by taking advantage of the sun’s renewable thermal energy that is absorbed and stored by the earth. At a depth of 20 feet the ground maintains a fairly constant temperature of ranging from 45 to 77 degrees F depending on your region of the United States.
Pipes in the ground circulate a water solution and carry renewable thermal energy to the heat pump in the winter for heating and remove heat from the building into the ground in the summer. Forced air or low temperature hydronic systems distribute geothermal heating and air conditioning. Most systems use electric heat pumps capable of increasing the ground’s thermal energy in the winter and concentrating and depositing the a building’s thermal energy into the relatively cool ground in the summer when air conditioning.
Today the U.S. geothermal heat pump (GHP) industry scored a victory for its workforce as federal legislation was passed to extend federal tax credits for residential and commercial installations of GHPs. The measure was included in the Continuing Resolution spending bill recently approved by Congress. Continue