Frequently Asked Questions
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What is geoexchange technology? (top)
Geoexchange technology uses the earth's renewable energy,
just below the surface, to heat or cool a home or other building,
and to help provide hot water. It's sometimes referred to
as geothermal heat pump, a ground source heat pump, or green
How does geothermal work? (top)
A few feet beneath the surface, the earth's temperature remains
fairly constant, ranging from 45' or so in the north. Geoexchange
takes advantage of this constant temperature to provide extremely
efficient heating and cooling.
How is heat transferred between the earth and the building? (top)
The earth has the ability to absorb and store heat from the
sun. To tap that stored energy, heat is extracted from the
earth via ground water or by water circulated through underground
pipes and pumped to a water source heat pump.
Does the size of the system needed vary? (top)
To establish the heating needs of the home an HVAC contractor
will complete an assessment (Manual J) and report the results
to Parker Geothermal. Then depending on the specific needs
of the home Parker Geothermal will determine the size of heat
pump best suited to deliver plenty of heat. On average an
area of 1,000 sq. ft. would require a 2-ton heat pump, 2,000
sq. ft. a 4-ton, and so on upward or in between.
Do I need a backup heat source in case of system failure? (top)
Most homes with a geothermal heating system choose not to have
a backup source of heat since it is not needed. If a backup
heat source is desired anyway the option exists to install
an electric strip capable of providing heat should the submersible
well pump fail.
What is the cost of having a Geothermal Heating System installed? (top)
Typically, the installation of a Geothermal Heating System
will cost in the order of 30% to 40% more than a conventional
heating system. The exact cost will depend on certain factors
such as the heating needs of the home or building as determined
by the HVAC contractor. In return, a Geothermal Heating System
can cut your energy cost on the average of 20% to 50% per
year. As a result, geothermal heating will soon pay for itself,
after which you will experience a yearly cost savings, particularly
with the fuel issues of today.
Can my existing water well be used as part of the geothermal heat system? (top)
Depending on the depth of your current water well this may
be possible. Ideally, the well would need to be at least 300
feet or more deep. Otherwise the existing well would need
to be deepened, which could have an adverse effect on the
well water quality making a new well the better alternative.