How Geothermal Systems Work

A Geothermal Heat Pump System works just like your refrigerator. It pumps heat from one level up to another. Your refrigerator pumps heat away from the food thus cooling it. This heat is delivered to the kitchen at an elevated temperature via the hot coil on the back. Similarly, a Geothermal Heat Pump removes heat from the earth via a heat exchanger buried in the earth and delivers it to the home or business at an elevated temperature through either duct work or heated water in radiant floor tubing. The process can be reversed for cost-effective cooling of the home or business in the summer.

Geothermal Heat Pumps can obtain energy from the earth using closed loop coils installed in horizontal trenches or in vertically drilled bore holes. Water pumped directly from wells or bodies of water can also be used as a source of energy. Closed loops can also be submerged in the bottom of a pond. The right type of geothermal heat pump technology for your application will be based on the characteristics of your property and if there are existing structures you have to work around (like driveways, yards and structures that cannot be disturbed). New construction is always the best fit for installation of geothermal heat pump systems. But Geothermal can be added to existing homes as well if the structure’s insulation and weatherization has been upgraded to current standards.

There Are Several Geothermal Technologies

  • Direct exchange geothermal heat pump
  • Closed Loop
  • Vertical Loop
  • Horizontal Loop
  • Slinky Loop
  • Pond Loop
  • Open Loop (groundwater heat pump)