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Geothermal -
Geoexchange
Geothermal - GeoExchange is a
fairly new concept in our geographical area.
Most people have never heard of this system,
and do not understand how the process works.
This page is designed to answer some of your
questions.
What is a
Geothermal - GeoExchange system?
Geothermal - GeoExchange systems are
electrically powered systems that take
advantage of the earth's relatively constant
ground temperature to provide heating,
cooling, and domestic hot water for homes
and commercial buildings.
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How does GeoExchange
work?
In the winter, the ground heat exchanger
collects heat from the ground, carries it
through the system, and inside the indoor
heating delivery source (ductwork/in-floor
heat).
In the summer, the system is reversed. The
building is cooled by pulling heat from the
building, and depositing it in the ground.
What is the Ground
Heat Exchanger?
Ground heat exchangers for GeoExchange
systems consist of a grid of buried
polyethylene plastic pipe (ground loops)
through which a liquid heat exchange medium
(water, or antifreeze) circulates. The
circulating liquid is the mechanism by which
heat is absorbed from the earth to be
transferred into the building, or from the
building into the ground. This process also
creates free domestic hot water in the
summer, and delivers substantial domestic
hot water savings in the winter.
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What are the types of
ground loop systems and how do I choose one?
There are four main kinds of ground loop
systems to choose from.
 Horizontal
Vertical
Pond/Lake
Open
Horizontal, vertical, and pond/lake are all
closed loop systems. The heat pump and loop
form a sealed, pressurized system through
which the liquid heat exchange medium is
circulated.
Open - loop systems, on the other hand, are
not sealed, and are open at either end to
obtain the liquid heat exchange medium
(water) from an existing well or surface
body, and to discharge it externally as
well.
The one you install will depend on your
specific needs, climate, and soil
conditions, available land area, local
installation costs, and local codes.
What are the
benefits of GeoExchange?
The benefits of GeoExchange are numerous.
GeoExchange offers consumers a heating,
cooling, and domestic hot water system that
is cost saving, reliable, energy efficient,
and environmentally sound. Electrically
powered, GeoExchange technology has proven
300 percent more efficient than other
systems - conserving energy to save you
money. GeoExchange is clean, safe, and
requires virtually no maintenance.
Is a GeoExchange
system expensive?
Typically, GeoExchange systems cost more to
install in buildings than conventional
systems, but they have the lowest life-cycle
cost of any heating and cooling system.
Heating and cooling cost for typical 2,000
sq. ft. home can run as low as one dollar
per day. As energy costs per BTU increase,
the savings will be increasingly more
significant.
What can Major
Heating offer?
Major Heating has significant experience
with GeoExchange systems. We can help you
design your system using the latest
technology. We can offer different systems
depending on your needs, desired comfort,
space/land conditions and budget. Our firm
is certified by the International Ground
Source Heat Pump Association (IGSHPA) for
heat pump installations. Major Heating is
one of only a handful of contractors
certified within Colorado.
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