Earth Loops
Three Basic Geothermal Loops
Vertical Geothermal Loops
Horizontal Loops
Often used when adequate land surface is available. Depending on geothermal system needs and space available, pipes are placed in trenches that range in length from 100 to 400 feet.Closed-loop systems circulate a water-based solution through a "loop system " of small-diameter, high-density polyethylene underground pipes. Closed-loop systems can be installed horizontally, vertically or in a pond. With an closed loop system, heat is transferred to or from the structure, regardless of outdoor temperature, to provide year-round comfort.
Horizontal Geothermal Loops
Vertical Loops
The ideal choice for a geothermal heat pump when available land surface is limited. Well drilling equipment is used to bore small-diameter holes from 100 to 600 feet deep. These are the most reliable earth loop and most often used in Urban areas.
Geothermal Pond Loops
Pond (Lake) Loops
Very economical to install when a large body of water is available for use by the geothermal heating and cooling system. Coils of pipe are simply placed on the bottom of the pond or lake to capture the geothermal energy.
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