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Carrier Indoor & Outdoor Split Geothermal Heat Pumps - Rev.: 08/10/05
2
Geothermal Advantages
Geothermal systems transfer heat from a build ing
to the earth in the cooling mode, or from the
earth to the building in the heating mode. Water
is used as the heat transfer medium, either in a
closed loop piping system, or by directly pumping
well water. By using this stable thermal source,
geothermal heat pumps provide energy effi cient
comfort year around.
Highest Effi ciency
The extremely high levels of effi ciency are
possible because a geothermal heat pump only
uses electricity to move heat, not produce it. A
geothermal unit typically supplies 4 kilo watts of
heat for every kilowatt of elec tric i ty used. Three of
these kilo watts of heat come directly from the earth
itself, and are clean, free, and renewable. Overall,
geothermal technology offers the highest cooling
EER’s and heating COP’s available in the industry.
Most systems also include a hot water generator,
which diverts a portion of the supplied heat to the
domestic water heater. This provides a substantial
portion of a family’s hot water needs at a very low
cost. Overall, geothermal technology offers the
highest cooling EER’s and heating COP’s available in
the industry.
Maximum Comfort
Geothermal heat pumps also provide higher
comfort levels than traditional space conditioning
equipment. By using a relatively warm source of
heat such as the earth, supply air temperatures
are signifi cantly higher in the heating mode than
traditional air-source heat pumps. Geo ther mal
heat pumps also cycle much less often than fossil
furnaces, creating a consistent indoor temperature
with comfortable relative humidity.
Environmentally Friendly
The environmental advantages of geothermal
systems have caught the eye of governmental
agencies such as the En vi ron men tal Pro tec tion
Agency (EPA) and the De part ment of Energy
(DOE). Because it is lowest in CO
2
emissions,
geothermal tech nol o gy provides a solution to global
warming by primarily using the natural energy
of the earth. In contrast, traditional space
conditioning systems depend upon the exploitation
and burning of fossil energy sources with the
resultant greenhouse gas emis sions. Also, Puron
®
HFC 410A refrigerant is used in the GT-PX series
equipment for minimum global warming impact and
zero ozone depletion.
Better Investment
Low life-cycle costs are provided by the low
op er at ing and maintenance costs of geothermal
systems, even when the higher initial in stal la tion costs
are considered. In new con struc tion, monthly energy
savings typically exceed the increased mort gage
payments. Therefore, cash fl ow can be positive from
the start. In retrofi t systems, a buyer who purchases
with cash usually realizes a return on in vest ment
well above certifi cate of deposit rates. And, with
equip ment life ex ceed ing 20 years, a Carrier
geothermal system is a lasting in vest ment.
Electric utilities, recognizing the dual benefi ts of
high effi ciency and low electric peak demand, often
provide incentives to purchase these systems.
Before choosing a geothermal system, many
application factors must be evaluated including:
• Ground water availability and quality
• Loop installation costs
• Land area available
• Sub-soil conditions
• Local codes
• Owner preferences
Carrier dealers have the expertise and computer
software to determine the best type of system.
Many regions have contractors specializing in the
in stal la tion of the ground loop portion of the system.