Outdoor temperatures in Minnesota can fluctuate extremely throughout the year. In contrast, ground temperatures 8 feet below the earth’s surface remain at a nearly constant 50-55 degrees year-round from absorbing the sun’s energy.
So how does it work? A series of pipes and hoses, called a “loop field” is installed beneath the earth’s surface. Year round, this loop field circulates a mixture of water & antifreeze to exchange heat in or out of your home by using the earth’s constant warm temperature. This liquid mixture carries heat into your home until it reaches a heat pump (also known as a ground source heat pump). This pump removes the heat from the water mixture and uses it to heat your home or building.