About 10 feet below the ground, the earth maintains a nearly constant temperature. We can tap into this energy reservoir by sinking a closed loop below the surface and filling it with an antifreeze. In the winter, we absorb the earth’s naturally warmer temperature through the closed ground loop and bring it to the surface. Using the ground source heat pumps, we can extract the thermal energy and circulate it through your building. In the summertime, the system extracts the thermal energy from the air, cooling the space.