Photo by A Better House
Geothermal heating has been around since ancient Rome, the technology since the 1950s, and the United States produces the largest amount of geothermal energy in the world. Need a refresher on what geothermal is? The Earth stores 47 percent of the solar energy that reaches us. Geothermal technology is how you get the energy out of the Earth. Geothermal heating and cooling systems, also called ground source heat pumps, earth source heat pumps, or geothermal heat pumps, run pipes a few feet below the earth’s surface where the temperature is warmer than the outside air. These pipes heat up and transfer water or a coolant back to the home and warm the air. They work in the opposite direction in the summer to cool. So, why hasn’t geothermal heating become a viable energy resource like wind and solar power? Cost. Although the purchase and installation cost of a residential geothermal heat pump system is often higher than that of other heating and cooling systems, properly sized and installed geothermal heat pump systems deliver more energy per unit consumed than conventional systems. |
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