The average year-round ground temperature is 50-70° only three to four feet beneath the frost line.
GEOTHERMAL HEATING & COOLING
No matter what climate you live in, the temperature throughout the year varies. For climates like ours, that means blazing summers that cool to frigid winters. What many people don’t realize is that the temperature below ground stays fairly consistent all year, regardless of climate or season.
Just below the frost line is a wealth of solar energy that’s been collected and stored. A geothermal heat pump taps into this free and renewable energy to provide the most efficient and cost-effective heating and cooling available. By simply moving that energy to and from the home, a geothermal heat pump isn’t burning fossil fuels to create heat, which means your home will be safer and your carbon footprint will be smaller.
During the heating cycle, a geothermal heat pump uses the earth loop to extract heat from the ground. As the system pulls heat from the loop it distributes it through a conventional duct system as warm air. The same heat energy can also be used for a radiant floor system or domestic hot water heating.
In the cooling mode, the heating process is reversed – creating cool, conditioned air throughout the home. Instead of extracting heat from the ground, heat is extracted from the air in your home and either moved back into the earth loop or used to preheat the water in your hot water tank.