Three Basic Geothermal Loops

 Vertical 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

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

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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