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Geothermal Energy Sources
Your own backyard has the potential
to be your home's major source of energy
  • CLOSED LOOP SYSTEMS circulate a water-based solution
    through a "loop" of small-diameter, underground pipes.
    In cold weather, this solution absorbs heat from the
    earth and carries it to the geothermal unit. Working
    in similar manner as your household refrigerator, the
    geothermal system amplifies the heat and delivers it
    throughout your house. In warm weather, the process
    is reversed and excess heat is carried from your home
    and into the earth. You keep refreshingly cool during
    the hottest summer.


  • HORIZONTAL LOOPS are often considered when adequate
    land surface is available. Pipes are placed in
    trenches, in lengths that range from 100 to 400 feet.

    VERTICAL LOOPS are the ideal choice when available
    land surface is limited. Drilling equipment is used
    to bore small-diameter holes from 300 to 500 feet deep.

    POND (lake) LOOPS are very economical to install when
    a body of water is available, because excavation costs
    are virtually eliminated. Coils of pipe are simply
    placed on the bottom of the pond or lake.

    OPEN LOOP SYSTEMS utilize ground water as a direct
    energy source. In ideal conditions, an open loop
    application can be the most economical type of
    geothermal system.


  • Geothermal energy represents the leading edge of home
    heating and cooling technology. It moves heat energy
    to and from the earth to heat and cool you home. And
    compared to ordinary systems, geothermal technology
    can save you up to 70% on your monthly energy bills.
    Geothermal is the safest, cleanest, most reliable
    space conditioing system you can buy.
Durham Herald Article Mother Earth News Eno Commons