Geothermal Alliance of Illinois

  Outdoor air temperatures fluctuate throughout the year with the changing seasons. In contrast, ground temperatures about four to six feet below the Earth’s surface remain relatively moderate and constant all year.  That’s because the Earth absorbs heat energy from the sun. A geothermal system circulates a water-based solution through a buried loop system to take advantage of these constant temperatures.  A single piece of equipment has the ability to heat and cool your home, while providing some or all of your home’s hot water as well. Geothermal systems can save you 30 percent to 70 percent on your monthly utility bills.