Geothermal systems use a loop of high-density polyethylene water pipe placed under ground, where almost 50 percent of all solar energy is absorbed and a temperature between 50 degrees to 70 degrees is maintained. Water and an anti-freezing agent are circulated through these underground pipes to absorb and expel heat, depending on the season.In winter, the system absorbs heat from the earth and coverts it to warm air for heating your home. In summer, the system reverses itself, gathering heat from your home and expelling it into the cooler earth. Typically, a geothermal heating and cooling system requires half the natural gas or half the coal for electricity normally used.
