The Geothermal System:
A Simple Concept
Energy efficient, green, home design with comfort and
low utility bills as a must.
The geothermal heat pump system works in harmony with the earth and the sun to provide for your
home's heating and cooling needs.
The concept is simple. A high-strength pipe made of thermal plastic is buried in the ground
in a loop configuration. A closet loop is filled with an environmentally safe water/anitfreeze solution that
transfers heat to or from the earth as needed. The same principle applies for an open loop that taps into a
well, then discharges the water once it has been used. The closed loop circulation system is virtually
maintenance free, with a life expectance of over 50 years.
Typical Geothermal Earth
- Horizontal Loops - Horizontal loops are sometimes used where adequate land is available for underground loops that range
from 100 feet to 500 feet in length.
- Vertical Loops - Vertical loops are ideal when land surface is limited. Vertical holes (about 6 inches in
diameter) are drilled to depths ranging from 100 feet to 300 feet. Vertical loops are almost always
used in a neighborhood setting.
- Geothermal loop pond applications-
Pond loops, referred to by some as pond source heat pumps, are a very economical alternative when a body
of water is nearby. The pipes are placed along the bottom of the
- Open "loop" applications - Open loop applications do not use a closed loop of pipe
containing a water/antifreeze solution. An open loop system utilizes a near-by water source such as
an existing well to circulate water. Because of filtering problems, we do not recommend using an
open loop system. However, if you have a near-by well or pond, this type of application could
be an alternative.
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