How Does It Work?

      Two primary components:

• Water source heat pumps inside the building

• Polyethylene pipe buried underground outside the building or in a pond or lake.  –An environmentally-safe liquid circulates through the underground pipe and acts as a heat exchanger.  –In the winter, heat is transferred from the ground to inside the building.  –In the summer, heat is extracted from the building and placed in the ground

   Types of Geothermal Heating and Cooling Systems:

                   VERTICAL CLOSED LOOP

• Most common configuration for commercial buildings

• Recommended where land area is limited

• Pipes buried beneath a parking lot or lawn area

• 150-220 feet of vertical drilling is needed for each ton of heating and cooling capacity

                          HORIZONTAL CLOSED LOOP

• Recommended for smaller systems where there is enough land to accommodate the pipes

• Installed in trenches four to six feet deep

• 400-600 feet of pipe is required per ton of heating and cooling capacity

                   LAKE OR POND CLOSED LOOP

• Recommended when a sufficient body of water is nearby

• Approximately 3,000 square feet of surface area at a depth of 10 feet is required per ton of heating and cooling capacity

                   LAKE OR POND SLIM JIM

• Recommended when a sufficient body of water is nearby

• Requires less square feet of surface area per ton of heating and cooling capacity