Geothermal Comfort Systems - Norris Heating and Air Conditioning

Frequently Asked Questions
Q: How efficient are geothermal heat pump systems?
A: Actual efficiencies will depend on a number of factors, but
generally speaking a geothermal heat pump can be three
to five times more efficient at providing heat than a gas,
propane or oil furnace based on the amount of energy
consumed to provide a given amount of heat. For cooling,
a geothermal system is generally 30-50% more efficient
than an air conditioner or heat pump.
Q: Why are geothermal heat pumps so efficient?
A: Geothermal heat pumps use the ground temperatures as a
“source” for heat energy during heating, and use the ground
as a heat “sink” during cooling. The earth acts as a giant,
free energy battery, providing an endless, renewable source
for heating and cooling comfort. Standard heat pumps use
outdoor air for heating and cooling. Because the ground
temperature is much more moderate and stable than air
temperatures, geothermal system operation is much more
energy-efficient, especially at extreme outdoor temperatures.
Q: Are these systems reliable?
A: Yes. Geothermal units are not subject to some of the same
forces that cause wear and tear on other types of systems.
And earth loops are installed using a special grade of
polyethylene pipe with heat-fused fittings designed to
last 50 years or more.
Q: What kind of underground loop system is best?
A: It depends on several factors. Homes on larger lots usually
have horizontal loops installed. Smaller lots may require a
vertical loop. A nearby pond can also be used. If you have
a well water system, that may be an option. Your Bryant
dealer is trained to determine which loop design is most
appropriate for your home. Regardless of the loop system
selected, the operating costs are all about the same.
Q: How much space is needed for a closed loop system?
A: The smallest closed loop design, the vertical loop, may
require a space of only 15x15 feet, or a line of 3x45 feet,
located at least 10 feet away from the home, and 10 feet
from property lines. Horizontal loops require considerably
more space.
Q: How is the unit size and loop design determined?
A: Bryant dealers use GeoDesigner software to determine the
most appropriate sized unit and loop for your home. The
software takes many factors into consideration including:
the heating and cooling requirements of the home, loop
type, depth, soil conditions, earth temperatures, outdoor
air temperature extremes, local fuel rates and much more.
In addition, the software can demonstrate energy costs for
a Bryant geothermal system versus another type of heating
and cooling system.
Q: Will the fluid in the loops freeze during a long,
cold winter?
A: No. Antifreeze in the loop fluid eliminates any concerns
about freezing.
Geothermal Comfort Systems
Frequently Asked Questions (con’t)
Q: Can a well be used instead of an earth loop?
A: Yes. Prior to using a well for a geothermal installation, the
water quality should be checked. Sufficient water volume is
needed for the unit, usually about four to nine gallons per
minute during unit operation. A discharge location like a
pond or drainage ditch is also required.
Q: Can the existing duct work and electrical service be used?
A: Generally, the existing duct work can be used with a geothermal
unit without extensive modification. Variable speed blowers used
in many of the Bryant geothermal units can compensate for a lessthan-optimum duct system. For the electrical supply, a 200-amp
service for the home is recommended.
Q: How big does a pond have to be for use with a
geothermal system?
A: For most installations, the pond should have a surface area
of at least a half acre and a depth of 10 feet. Bigger is better.
Q: What about radiant floor heating?
A: A geothermal system can be designed to provide warm water for
radiant floor applications. Bryant's water-to-water geothermal units
are four to five times more efficient than today's best boilers.
Q: What is the actual efficiency of a geothermal system
and how does it compare to a furnace, air conditioner
or heat pump?
A: The efficiency of a geothermal system is rated by an industry
standard known as ARI/ISO 13256-1, that specifies a set of
conditions by which efficiency is determined. The rating for
heating is Coefficient of Performance (COP). It's a ratio of
the amount of energy used to operate the unit compared to
the amount of energy output. Bryant's highest efficiency
geothermal units have a COP in excess of 4.5 (that's 450%
efficient), compared to the highest efficiency gas furnace
with a COP of 0.95 (95% efficient AFUE) or a high-efficiency
heat pump with an average seasonal COP around 1.8. The
rating for cooling is called Energy Efficiency Ratio (EER). It's
calculated by dividing BTUs per hour output into the watts
used. Bryant's highest efficiency geothermal units have EERs
around 18-27. That's about 30-50% better than many air
conditioners and heat pumps. But because geothermal units
are not rated according to the same industry standard as
furnaces, air conditioners, and heat pumps, it is difficult to
compare, for example, an AFUE and HSPF to COP, or SEER
to EER. To get the full energy efficiency story, compare the
dollars. Your Bryant dealer can calculate operating cost
estimates using Bryant's GeoDesigner software.
Q: Are geothermal systems more expensive to install, and how
long does it take for the extra expense to pay for itself?
A: Geothermal systems are generally more expensive to install than
ordinary systems. For replacement installations, the added cost is
usually recovered in a few years. In a new home where the added
cost of the system is included in the mortgage, the monthly energy
savings may be greater than the added cost, providing the homeowner with a positive cash flow from day one. Because every situation is somewhat unique, your Bryant dealer can demonstrate the
complete financial scenario for your home using the GeoDesigner
software. Many homeowners find that a Bryant geothermal system
is a great investment.
Factoids
● With over 1 million geothermal installations, the total estimated
annual energy savings is 8 billion kWh of electricity and 40 billion
BTUs of fossil fuels. It reduces our reliance on imported fuels by
21.5 million barrels of crude oil per year.
● Homeowners with geothermal systems installed are saving a
combined, estimated $750 million over 20 years.
● The amount of the sun's energy absorbed by the earth is more than
500 times the energy required for all of mankind every year.
● Geothermal systems installed in schools are saving over $25 million
in energy costs annually, saving more money for books, equipment
and teachers.
(Source: Geothermal Heat Pump Consortium)
● Surveys by utilities have shown that more than 95% of geothermal
system owners would recommend the technology to others.
Incentives, Rebates and Tax Credits
Because geothermal systems can be part of the solution for national
energy policy, and for efficiency programs of various utilities, many
incentives are available throughout the U.S. and Canada. Check with
your Bryant dealer and tax professional to find out what incentives
are available in your area.
Limited Warranty
Bryant geothermal units are backed with a 10-year limited warranty
on the compressor and major refrigeration components, and 5-years
on all other parts. Extended warranties providing labor allowances
are available. Ask your Bryant dealer for details.
Q: Is comfort compromised to get all this efficiency?
A: No. In fact, geothermal systems can provide exceptional
comfort without the “cold blow” from an air source heat
pump during heating; or short, hot blasts of air associated
with standard efficiency gas furnaces. Geothermal units
deliver air at temperatures that provide comfort throughout
the house. The Bryant dual capacity units with variable
speed fans precisely match the needs of the home to deliver
comfort no matter what the outdoor air temperature is.
Q: Can a geothermal unit be combined with a gas or
propane furnace?
A: Yes. Some homeowners like the benefits of both technologies. In this case, a geothermal “split” unit (compressor only)
is connected to a furnace and cooling coil. The geothermal
unit will perform all the cooling and some of the heating.
During the coldest days, the system switches over to furnace
operation. This type of system may be a good choice for a
replacement installation.
A Member of the United Technologies Corporation Family.
Stock Symbol UTX.
01-8110-763-25
© Bryant Heating and Cooling Systems 2009
7310 West Morris Street, Indianapolis, IN 46231
Visit our website at www.bryant.com
Before purchasing this appliance, please read the important
energy cost and efficiency information available from your dealer.
Manufacturer reserves the right to discontinue, or change, at
any time, specifications or designs without notice and without
incurring obligations.
The Bryant® Geothermal Advantage
Free Energy From The Earth
5
Go Green: Reduce Your Carbon Footprint
Key Features
2
9
Throughout Bryant's historic 100-year
legacy, the company has provided millions of
homeowners with the finest comfort systems
available. Using state-of-the-art furnaces, air
conditioners and heat pumps, Bryant dealers
are experts when it comes to customized home
comfort systems. But it doesn't end there.
Bryant also offers a complete line of exceptional geothermal comfort systems for your home.
According to the U.S. Environmental
Protection Agency, geothermal systems are
“the most energy efficient, environmentally
clean, and cost effective space conditioning
systems available today.” That's because a
geothermal system taps into the earth to
capture free, renewable energy.
The earth absorbs about 47% of the sun's
energy that reaches it, storing that energy in
the ground. A geothermal system extracts that
free energy for heating during winter. For
cooling, the system removes heat from the
home and dumps it into the cooler earth. This
transfer of heat energy is done through a
series of pipes buried in the ground, or sunk in
a pond, or by using well water. Because a
geothermal system simply moves heat instead
of burning a fossil fuel to generate it, it's more
energy-efficient.
Geothermal systems can be installed with a variety of loop system configurations. “Closed loops” use re-circulated fluid in a series of pipes
installed vertically, horizontally, or in a pond. “Open loops” use well water. Your dealer will determine which design works best for your home.
Why Choose Geothermal?
Geothermal Systems provide homeowners with a wide range of benefits.
● Savings: Generally, no other heating and cooling system offers
lower operating costs, with savings up to 60% compared to ordinary
systems.
● Comfort: These systems provide even temperatures throughout the
home year round, with excellent dehumidification during cooling.
● Environmentally Friendly: Geothermal is a clean, green, and
renewable technology to reduce your carbon footprint now and for
future generations.
● Reliable: Geothermal units last longer than ordinary air conditioners
and heat pumps. Since the units contain few moving parts, they
operate for years with little maintenance.
● Quiet Operation: Unlike ordinary air conditioners and heat pumps,
no outdoor unit is required. Bryant geothermal units use heavy-duty,
fully-insulated cabinets for quiet operation. Quiet, soft starting variable speed blowers are used in many models.
Horizontal Loops: Used on larger lots. Installed using a backhoe
or trencher.
Pond Loops: Coils of pipe are fabricated and sunk to the
bottom of the pond.
Geothermal systems use the free, renewable energy from the
earth, so the technology is one that can have a positive effect on
your carbon footprint. In fact, according to the Geothermal Heat
Pump Consortium, installing a geothermal system instead of an
ordinary system is the environmental equivalent (in emission
reduction) of taking two cars off the road or planting an acre of
trees. And because of improved electrical energy efficiency,
geothermal systems reduce the need to build additional costly,
fuel burning power plants. It's clean technology – geothermal
units produce no on-site emissions.
There are over 1 million geothermal installations today, resulting
in the avoidance of more than 5.8 million metric tons of carbon
dioxide and more than 1.6 million metric tons of carbon equivalent
annually. In addition, existing geothermal installations are the environmental equivalent (in emission reduction) of taking 1.2 million
cars off the road, or planting more than 385 million trees.
3
4
6
1
8
7
1
Geothermal Product Selection Guide
● Flexibility: Heating, cooling and supplemental water heating from a
single unit. And a wide variety of models and options to fit most any
application.
Bryant offers a
wide range of model
options and configurations to fit a variety
of applications. Our
popular GT-PX
series includes the
following features:
Copeland Ultra-Tech™
two-stage unloading scroll
compressor for exceptional
performance, efficiency and
reliability
2 Variable speed blower motor for
comfort and quiet operation
● Free Hot Water: During unit operation, free excess heat is used to
supplement the home's water heater.
3
E-Coated air coil for corrosion
resistance
● Energy Independence: Geothermal systems reduce our need to
import fuel.
4
Foil faced insulation in blower
section for easy cleaning.
Insulated compressor section
for quiet operation
5
Filter rack with two-inch MERV
11 filter for indoor air quality
6
Stainless steel drain pan for
corrosion resistance
7
Unit Performance Sentinel
microprocessor control precisely
sequences and monitors component operation for improved
performance and serviceability
8
Double spring and grommet
compressor isolation for quiet
operation
9
Heavy-duty cabinet, epoxy
powder coated, with stainless
steel front panels for aesthetics
and long life
● Safe and Clean: No flame, no flue, no odors.
The Energy Efficiency Story
Cost Comparison for 1 Million BTUs
GEOTHERMAL
One of the main reasons many homeowners choose geothermal is the benefit of
lower operating costs. In most homes, the cost for heating, cooling and hot water
combine for about 70% of the total utility costs. Therefore, the biggest opportunity
to save a substantial amount in utility costs is to improve those systems. That's
where geothermal can help in a big way.
For every one unit of energy purchased to operate a geothermal unit, it delivers
four to five units of energy because the energy from the earth is free. In many
scenarios, a geothermal system is significantly less expensive to operate than
ordinary heating and cooling systems. Geothermal systems can save up to 70% in
heating costs, up to 50% in cooling costs, and around 30-50% in hot water costs.
One way to compare efficiency is to calculate the cost for 1 million BTUs of heat
transfer. Using a standard formula, an “apples to apples” comparison can be made
based on local fuel rates and equipment efficiency. The table at right demonstrates
a typical savings opportunity with geothermal. To get the full picture for your home,
contact your Bryant geothermal dealer.
Vertical Loops: Used where land area is limited or soil conditions
prohibit horizontal loops. Installed using a drilling rig.
$8.79
High-Efficiency Natural Gas $14.95
Air Source Heat Pump
$17.58
Standard-Efficiency Natural Gas $17.75
High-Efficiency Propane
Fuel Oil
Electric Furnace or Baseboard
Standard-Efficiency Propane
$30.65
$34.17
$35.16
$36.40
Note: Features on other models may vary.
Geothermal – 4.0 COP*, $0.12/kwh
Heat Pump – 2.0 COP, $0.12/kwh
Natural Gas – 95% AFUE**, 80% AFUE, $1.42/ccf
Propane – 95% AFUE, 80% AFUE, $2.65/gallon
Fuel Oil – 81% AFUE, $3.80/gallon
Electric Resistance – 1.0 COP, $0.12/kwh
* COP–Coefficient of Performance **AFUE–Annual Fuel Utilization Efficiency
Open Loop: Well water from an existing well can be used, then
discharged into a drainage ditch or pond.
The Bryant® Geothermal Advantage
Free Energy From The Earth
5
Go Green: Reduce Your Carbon Footprint
Key Features
2
9
Throughout Bryant's historic 100-year
legacy, the company has provided millions of
homeowners with the finest comfort systems
available. Using state-of-the-art furnaces, air
conditioners and heat pumps, Bryant dealers
are experts when it comes to customized home
comfort systems. But it doesn't end there.
Bryant also offers a complete line of exceptional geothermal comfort systems for your home.
According to the U.S. Environmental
Protection Agency, geothermal systems are
“the most energy efficient, environmentally
clean, and cost effective space conditioning
systems available today.” That's because a
geothermal system taps into the earth to
capture free, renewable energy.
The earth absorbs about 47% of the sun's
energy that reaches it, storing that energy in
the ground. A geothermal system extracts that
free energy for heating during winter. For
cooling, the system removes heat from the
home and dumps it into the cooler earth. This
transfer of heat energy is done through a
series of pipes buried in the ground, or sunk in
a pond, or by using well water. Because a
geothermal system simply moves heat instead
of burning a fossil fuel to generate it, it's more
energy-efficient.
Geothermal systems can be installed with a variety of loop system configurations. “Closed loops” use re-circulated fluid in a series of pipes
installed vertically, horizontally, or in a pond. “Open loops” use well water. Your dealer will determine which design works best for your home.
Why Choose Geothermal?
Geothermal Systems provide homeowners with a wide range of benefits.
● Savings: Generally, no other heating and cooling system offers
lower operating costs, with savings up to 60% compared to ordinary
systems.
● Comfort: These systems provide even temperatures throughout the
home year round, with excellent dehumidification during cooling.
● Environmentally Friendly: Geothermal is a clean, green, and
renewable technology to reduce your carbon footprint now and for
future generations.
● Reliable: Geothermal units last longer than ordinary air conditioners
and heat pumps. Since the units contain few moving parts, they
operate for years with little maintenance.
● Quiet Operation: Unlike ordinary air conditioners and heat pumps,
no outdoor unit is required. Bryant geothermal units use heavy-duty,
fully-insulated cabinets for quiet operation. Quiet, soft starting variable speed blowers are used in many models.
Horizontal Loops: Used on larger lots. Installed using a backhoe
or trencher.
Pond Loops: Coils of pipe are fabricated and sunk to the
bottom of the pond.
Geothermal systems use the free, renewable energy from the
earth, so the technology is one that can have a positive effect on
your carbon footprint. In fact, according to the Geothermal Heat
Pump Consortium, installing a geothermal system instead of an
ordinary system is the environmental equivalent (in emission
reduction) of taking two cars off the road or planting an acre of
trees. And because of improved electrical energy efficiency,
geothermal systems reduce the need to build additional costly,
fuel burning power plants. It's clean technology – geothermal
units produce no on-site emissions.
There are over 1 million geothermal installations today, resulting
in the avoidance of more than 5.8 million metric tons of carbon
dioxide and more than 1.6 million metric tons of carbon equivalent
annually. In addition, existing geothermal installations are the environmental equivalent (in emission reduction) of taking 1.2 million
cars off the road, or planting more than 385 million trees.
3
4
6
1
8
7
1
Geothermal Product Selection Guide
● Flexibility: Heating, cooling and supplemental water heating from a
single unit. And a wide variety of models and options to fit most any
application.
Bryant offers a
wide range of model
options and configurations to fit a variety
of applications. Our
popular GT-PX
series includes the
following features:
Copeland Ultra-Tech™
two-stage unloading scroll
compressor for exceptional
performance, efficiency and
reliability
2 Variable speed blower motor for
comfort and quiet operation
● Free Hot Water: During unit operation, free excess heat is used to
supplement the home's water heater.
3
E-Coated air coil for corrosion
resistance
● Energy Independence: Geothermal systems reduce our need to
import fuel.
4
Foil faced insulation in blower
section for easy cleaning.
Insulated compressor section
for quiet operation
5
Filter rack with two-inch MERV
11 filter for indoor air quality
6
Stainless steel drain pan for
corrosion resistance
7
Unit Performance Sentinel
microprocessor control precisely
sequences and monitors component operation for improved
performance and serviceability
8
Double spring and grommet
compressor isolation for quiet
operation
9
Heavy-duty cabinet, epoxy
powder coated, with stainless
steel front panels for aesthetics
and long life
● Safe and Clean: No flame, no flue, no odors.
The Energy Efficiency Story
Cost Comparison for 1 Million BTUs
GEOTHERMAL
One of the main reasons many homeowners choose geothermal is the benefit of
lower operating costs. In most homes, the cost for heating, cooling and hot water
combine for about 70% of the total utility costs. Therefore, the biggest opportunity
to save a substantial amount in utility costs is to improve those systems. That's
where geothermal can help in a big way.
For every one unit of energy purchased to operate a geothermal unit, it delivers
four to five units of energy because the energy from the earth is free. In many
scenarios, a geothermal system is significantly less expensive to operate than
ordinary heating and cooling systems. Geothermal systems can save up to 70% in
heating costs, up to 50% in cooling costs, and around 30-50% in hot water costs.
One way to compare efficiency is to calculate the cost for 1 million BTUs of heat
transfer. Using a standard formula, an “apples to apples” comparison can be made
based on local fuel rates and equipment efficiency. The table at right demonstrates
a typical savings opportunity with geothermal. To get the full picture for your home,
contact your Bryant geothermal dealer.
Vertical Loops: Used where land area is limited or soil conditions
prohibit horizontal loops. Installed using a drilling rig.
$8.79
High-Efficiency Natural Gas $14.95
Air Source Heat Pump
$17.58
Standard-Efficiency Natural Gas $17.75
High-Efficiency Propane
Fuel Oil
Electric Furnace or Baseboard
Standard-Efficiency Propane
$30.65
$34.17
$35.16
$36.40
Note: Features on other models may vary.
Geothermal – 4.0 COP*, $0.12/kwh
Heat Pump – 2.0 COP, $0.12/kwh
Natural Gas – 95% AFUE**, 80% AFUE, $1.42/ccf
Propane – 95% AFUE, 80% AFUE, $2.65/gallon
Fuel Oil – 81% AFUE, $3.80/gallon
Electric Resistance – 1.0 COP, $0.12/kwh
* COP–Coefficient of Performance **AFUE–Annual Fuel Utilization Efficiency
Open Loop: Well water from an existing well can be used, then
discharged into a drainage ditch or pond.
The Bryant® Geothermal Advantage
Free Energy From The Earth
5
Go Green: Reduce Your Carbon Footprint
Key Features
2
9
Throughout Bryant's historic 100-year
legacy, the company has provided millions of
homeowners with the finest comfort systems
available. Using state-of-the-art furnaces, air
conditioners and heat pumps, Bryant dealers
are experts when it comes to customized home
comfort systems. But it doesn't end there.
Bryant also offers a complete line of exceptional geothermal comfort systems for your home.
According to the U.S. Environmental
Protection Agency, geothermal systems are
“the most energy efficient, environmentally
clean, and cost effective space conditioning
systems available today.” That's because a
geothermal system taps into the earth to
capture free, renewable energy.
The earth absorbs about 47% of the sun's
energy that reaches it, storing that energy in
the ground. A geothermal system extracts that
free energy for heating during winter. For
cooling, the system removes heat from the
home and dumps it into the cooler earth. This
transfer of heat energy is done through a
series of pipes buried in the ground, or sunk in
a pond, or by using well water. Because a
geothermal system simply moves heat instead
of burning a fossil fuel to generate it, it's more
energy-efficient.
Geothermal systems can be installed with a variety of loop system configurations. “Closed loops” use re-circulated fluid in a series of pipes
installed vertically, horizontally, or in a pond. “Open loops” use well water. Your dealer will determine which design works best for your home.
Why Choose Geothermal?
Geothermal Systems provide homeowners with a wide range of benefits.
● Savings: Generally, no other heating and cooling system offers
lower operating costs, with savings up to 60% compared to ordinary
systems.
● Comfort: These systems provide even temperatures throughout the
home year round, with excellent dehumidification during cooling.
● Environmentally Friendly: Geothermal is a clean, green, and
renewable technology to reduce your carbon footprint now and for
future generations.
● Reliable: Geothermal units last longer than ordinary air conditioners
and heat pumps. Since the units contain few moving parts, they
operate for years with little maintenance.
● Quiet Operation: Unlike ordinary air conditioners and heat pumps,
no outdoor unit is required. Bryant geothermal units use heavy-duty,
fully-insulated cabinets for quiet operation. Quiet, soft starting variable speed blowers are used in many models.
Horizontal Loops: Used on larger lots. Installed using a backhoe
or trencher.
Pond Loops: Coils of pipe are fabricated and sunk to the
bottom of the pond.
Geothermal systems use the free, renewable energy from the
earth, so the technology is one that can have a positive effect on
your carbon footprint. In fact, according to the Geothermal Heat
Pump Consortium, installing a geothermal system instead of an
ordinary system is the environmental equivalent (in emission
reduction) of taking two cars off the road or planting an acre of
trees. And because of improved electrical energy efficiency,
geothermal systems reduce the need to build additional costly,
fuel burning power plants. It's clean technology – geothermal
units produce no on-site emissions.
There are over 1 million geothermal installations today, resulting
in the avoidance of more than 5.8 million metric tons of carbon
dioxide and more than 1.6 million metric tons of carbon equivalent
annually. In addition, existing geothermal installations are the environmental equivalent (in emission reduction) of taking 1.2 million
cars off the road, or planting more than 385 million trees.
3
4
6
1
8
7
1
Geothermal Product Selection Guide
● Flexibility: Heating, cooling and supplemental water heating from a
single unit. And a wide variety of models and options to fit most any
application.
Bryant offers a
wide range of model
options and configurations to fit a variety
of applications. Our
popular GT-PX
series includes the
following features:
Copeland Ultra-Tech™
two-stage unloading scroll
compressor for exceptional
performance, efficiency and
reliability
2 Variable speed blower motor for
comfort and quiet operation
● Free Hot Water: During unit operation, free excess heat is used to
supplement the home's water heater.
3
E-Coated air coil for corrosion
resistance
● Energy Independence: Geothermal systems reduce our need to
import fuel.
4
Foil faced insulation in blower
section for easy cleaning.
Insulated compressor section
for quiet operation
5
Filter rack with two-inch MERV
11 filter for indoor air quality
6
Stainless steel drain pan for
corrosion resistance
7
Unit Performance Sentinel
microprocessor control precisely
sequences and monitors component operation for improved
performance and serviceability
8
Double spring and grommet
compressor isolation for quiet
operation
9
Heavy-duty cabinet, epoxy
powder coated, with stainless
steel front panels for aesthetics
and long life
● Safe and Clean: No flame, no flue, no odors.
The Energy Efficiency Story
Cost Comparison for 1 Million BTUs
GEOTHERMAL
One of the main reasons many homeowners choose geothermal is the benefit of
lower operating costs. In most homes, the cost for heating, cooling and hot water
combine for about 70% of the total utility costs. Therefore, the biggest opportunity
to save a substantial amount in utility costs is to improve those systems. That's
where geothermal can help in a big way.
For every one unit of energy purchased to operate a geothermal unit, it delivers
four to five units of energy because the energy from the earth is free. In many
scenarios, a geothermal system is significantly less expensive to operate than
ordinary heating and cooling systems. Geothermal systems can save up to 70% in
heating costs, up to 50% in cooling costs, and around 30-50% in hot water costs.
One way to compare efficiency is to calculate the cost for 1 million BTUs of heat
transfer. Using a standard formula, an “apples to apples” comparison can be made
based on local fuel rates and equipment efficiency. The table at right demonstrates
a typical savings opportunity with geothermal. To get the full picture for your home,
contact your Bryant geothermal dealer.
Vertical Loops: Used where land area is limited or soil conditions
prohibit horizontal loops. Installed using a drilling rig.
$8.79
High-Efficiency Natural Gas $14.95
Air Source Heat Pump
$17.58
Standard-Efficiency Natural Gas $17.75
High-Efficiency Propane
Fuel Oil
Electric Furnace or Baseboard
Standard-Efficiency Propane
$30.65
$34.17
$35.16
$36.40
Note: Features on other models may vary.
Geothermal – 4.0 COP*, $0.12/kwh
Heat Pump – 2.0 COP, $0.12/kwh
Natural Gas – 95% AFUE**, 80% AFUE, $1.42/ccf
Propane – 95% AFUE, 80% AFUE, $2.65/gallon
Fuel Oil – 81% AFUE, $3.80/gallon
Electric Resistance – 1.0 COP, $0.12/kwh
* COP–Coefficient of Performance **AFUE–Annual Fuel Utilization Efficiency
Open Loop: Well water from an existing well can be used, then
discharged into a drainage ditch or pond.
Frequently Asked Questions
Q: How efficient are geothermal heat pump systems?
A: Actual efficiencies will depend on a number of factors, but
generally speaking a geothermal heat pump can be three
to five times more efficient at providing heat than a gas,
propane or oil furnace based on the amount of energy
consumed to provide a given amount of heat. For cooling,
a geothermal system is generally 30-50% more efficient
than an air conditioner or heat pump.
Q: Why are geothermal heat pumps so efficient?
A: Geothermal heat pumps use the ground temperatures as a
“source” for heat energy during heating, and use the ground
as a heat “sink” during cooling. The earth acts as a giant,
free energy battery, providing an endless, renewable source
for heating and cooling comfort. Standard heat pumps use
outdoor air for heating and cooling. Because the ground
temperature is much more moderate and stable than air
temperatures, geothermal system operation is much more
energy-efficient, especially at extreme outdoor temperatures.
Q: Are these systems reliable?
A: Yes. Geothermal units are not subject to some of the same
forces that cause wear and tear on other types of systems.
And earth loops are installed using a special grade of
polyethylene pipe with heat-fused fittings designed to
last 50 years or more.
Q: What kind of underground loop system is best?
A: It depends on several factors. Homes on larger lots usually
have horizontal loops installed. Smaller lots may require a
vertical loop. A nearby pond can also be used. If you have
a well water system, that may be an option. Your Bryant
dealer is trained to determine which loop design is most
appropriate for your home. Regardless of the loop system
selected, the operating costs are all about the same.
Q: How much space is needed for a closed loop system?
A: The smallest closed loop design, the vertical loop, may
require a space of only 15x15 feet, or a line of 3x45 feet,
located at least 10 feet away from the home, and 10 feet
from property lines. Horizontal loops require considerably
more space.
Q: How is the unit size and loop design determined?
A: Bryant dealers use GeoDesigner software to determine the
most appropriate sized unit and loop for your home. The
software takes many factors into consideration including:
the heating and cooling requirements of the home, loop
type, depth, soil conditions, earth temperatures, outdoor
air temperature extremes, local fuel rates and much more.
In addition, the software can demonstrate energy costs for
a Bryant geothermal system versus another type of heating
and cooling system.
Q: Will the fluid in the loops freeze during a long,
cold winter?
A: No. Antifreeze in the loop fluid eliminates any concerns
about freezing.
Geothermal Comfort Systems
Frequently Asked Questions (con’t)
Q: Can a well be used instead of an earth loop?
A: Yes. Prior to using a well for a geothermal installation, the
water quality should be checked. Sufficient water volume is
needed for the unit, usually about four to nine gallons per
minute during unit operation. A discharge location like a
pond or drainage ditch is also required.
Q: Can the existing duct work and electrical service be used?
A: Generally, the existing duct work can be used with a geothermal
unit without extensive modification. Variable speed blowers used
in many of the Bryant geothermal units can compensate for a lessthan-optimum duct system. For the electrical supply, a 200-amp
service for the home is recommended.
Q: How big does a pond have to be for use with a
geothermal system?
A: For most installations, the pond should have a surface area
of at least a half acre and a depth of 10 feet. Bigger is better.
Q: What about radiant floor heating?
A: A geothermal system can be designed to provide warm water for
radiant floor applications. Bryant's water-to-water geothermal units
are four to five times more efficient than today's best boilers.
Q: What is the actual efficiency of a geothermal system
and how does it compare to a furnace, air conditioner
or heat pump?
A: The efficiency of a geothermal system is rated by an industry
standard known as ARI/ISO 13256-1, that specifies a set of
conditions by which efficiency is determined. The rating for
heating is Coefficient of Performance (COP). It's a ratio of
the amount of energy used to operate the unit compared to
the amount of energy output. Bryant's highest efficiency
geothermal units have a COP in excess of 4.5 (that's 450%
efficient), compared to the highest efficiency gas furnace
with a COP of 0.95 (95% efficient AFUE) or a high-efficiency
heat pump with an average seasonal COP around 1.8. The
rating for cooling is called Energy Efficiency Ratio (EER). It's
calculated by dividing BTUs per hour output into the watts
used. Bryant's highest efficiency geothermal units have EERs
around 18-27. That's about 30-50% better than many air
conditioners and heat pumps. But because geothermal units
are not rated according to the same industry standard as
furnaces, air conditioners, and heat pumps, it is difficult to
compare, for example, an AFUE and HSPF to COP, or SEER
to EER. To get the full energy efficiency story, compare the
dollars. Your Bryant dealer can calculate operating cost
estimates using Bryant's GeoDesigner software.
Q: Are geothermal systems more expensive to install, and how
long does it take for the extra expense to pay for itself?
A: Geothermal systems are generally more expensive to install than
ordinary systems. For replacement installations, the added cost is
usually recovered in a few years. In a new home where the added
cost of the system is included in the mortgage, the monthly energy
savings may be greater than the added cost, providing the homeowner with a positive cash flow from day one. Because every situation is somewhat unique, your Bryant dealer can demonstrate the
complete financial scenario for your home using the GeoDesigner
software. Many homeowners find that a Bryant geothermal system
is a great investment.
Factoids
● With over 1 million geothermal installations, the total estimated
annual energy savings is 8 billion kWh of electricity and 40 billion
BTUs of fossil fuels. It reduces our reliance on imported fuels by
21.5 million barrels of crude oil per year.
● Homeowners with geothermal systems installed are saving a
combined, estimated $750 million over 20 years.
● The amount of the sun's energy absorbed by the earth is more than
500 times the energy required for all of mankind every year.
● Geothermal systems installed in schools are saving over $25 million
in energy costs annually, saving more money for books, equipment
and teachers.
(Source: Geothermal Heat Pump Consortium)
● Surveys by utilities have shown that more than 95% of geothermal
system owners would recommend the technology to others.
Incentives, Rebates and Tax Credits
Because geothermal systems can be part of the solution for national
energy policy, and for efficiency programs of various utilities, many
incentives are available throughout the U.S. and Canada. Check with
your Bryant dealer and tax professional to find out what incentives
are available in your area.
Limited Warranty
Bryant geothermal units are backed with a 10-year limited warranty
on the compressor and major refrigeration components, and 5-years
on all other parts. Extended warranties providing labor allowances
are available. Ask your Bryant dealer for details.
Q: Is comfort compromised to get all this efficiency?
A: No. In fact, geothermal systems can provide exceptional
comfort without the “cold blow” from an air source heat
pump during heating; or short, hot blasts of air associated
with standard efficiency gas furnaces. Geothermal units
deliver air at temperatures that provide comfort throughout
the house. The Bryant dual capacity units with variable
speed fans precisely match the needs of the home to deliver
comfort no matter what the outdoor air temperature is.
Q: Can a geothermal unit be combined with a gas or
propane furnace?
A: Yes. Some homeowners like the benefits of both technologies. In this case, a geothermal “split” unit (compressor only)
is connected to a furnace and cooling coil. The geothermal
unit will perform all the cooling and some of the heating.
During the coldest days, the system switches over to furnace
operation. This type of system may be a good choice for a
replacement installation.
A Member of the United Technologies Corporation Family.
Stock Symbol UTX.
01-8110-763-25
© Bryant Heating and Cooling Systems 2009
7310 West Morris Street, Indianapolis, IN 46231
Visit our website at www.bryant.com
Before purchasing this appliance, please read the important
energy cost and efficiency information available from your dealer.
Manufacturer reserves the right to discontinue, or change, at
any time, specifications or designs without notice and without
incurring obligations.
Frequently Asked Questions
Q: How efficient are geothermal heat pump systems?
A: Actual efficiencies will depend on a number of factors, but
generally speaking a geothermal heat pump can be three
to five times more efficient at providing heat than a gas,
propane or oil furnace based on the amount of energy
consumed to provide a given amount of heat. For cooling,
a geothermal system is generally 30-50% more efficient
than an air conditioner or heat pump.
Q: Why are geothermal heat pumps so efficient?
A: Geothermal heat pumps use the ground temperatures as a
“source” for heat energy during heating, and use the ground
as a heat “sink” during cooling. The earth acts as a giant,
free energy battery, providing an endless, renewable source
for heating and cooling comfort. Standard heat pumps use
outdoor air for heating and cooling. Because the ground
temperature is much more moderate and stable than air
temperatures, geothermal system operation is much more
energy-efficient, especially at extreme outdoor temperatures.
Q: Are these systems reliable?
A: Yes. Geothermal units are not subject to some of the same
forces that cause wear and tear on other types of systems.
And earth loops are installed using a special grade of
polyethylene pipe with heat-fused fittings designed to
last 50 years or more.
Q: What kind of underground loop system is best?
A: It depends on several factors. Homes on larger lots usually
have horizontal loops installed. Smaller lots may require a
vertical loop. A nearby pond can also be used. If you have
a well water system, that may be an option. Your Bryant
dealer is trained to determine which loop design is most
appropriate for your home. Regardless of the loop system
selected, the operating costs are all about the same.
Q: How much space is needed for a closed loop system?
A: The smallest closed loop design, the vertical loop, may
require a space of only 15x15 feet, or a line of 3x45 feet,
located at least 10 feet away from the home, and 10 feet
from property lines. Horizontal loops require considerably
more space.
Q: How is the unit size and loop design determined?
A: Bryant dealers use GeoDesigner software to determine the
most appropriate sized unit and loop for your home. The
software takes many factors into consideration including:
the heating and cooling requirements of the home, loop
type, depth, soil conditions, earth temperatures, outdoor
air temperature extremes, local fuel rates and much more.
In addition, the software can demonstrate energy costs for
a Bryant geothermal system versus another type of heating
and cooling system.
Q: Will the fluid in the loops freeze during a long,
cold winter?
A: No. Antifreeze in the loop fluid eliminates any concerns
about freezing.
Geothermal Comfort Systems
Frequently Asked Questions (con’t)
Q: Can a well be used instead of an earth loop?
A: Yes. Prior to using a well for a geothermal installation, the
water quality should be checked. Sufficient water volume is
needed for the unit, usually about four to nine gallons per
minute during unit operation. A discharge location like a
pond or drainage ditch is also required.
Q: Can the existing duct work and electrical service be used?
A: Generally, the existing duct work can be used with a geothermal
unit without extensive modification. Variable speed blowers used
in many of the Bryant geothermal units can compensate for a lessthan-optimum duct system. For the electrical supply, a 200-amp
service for the home is recommended.
Q: How big does a pond have to be for use with a
geothermal system?
A: For most installations, the pond should have a surface area
of at least a half acre and a depth of 10 feet. Bigger is better.
Q: What about radiant floor heating?
A: A geothermal system can be designed to provide warm water for
radiant floor applications. Bryant's water-to-water geothermal units
are four to five times more efficient than today's best boilers.
Q: What is the actual efficiency of a geothermal system
and how does it compare to a furnace, air conditioner
or heat pump?
A: The efficiency of a geothermal system is rated by an industry
standard known as ARI/ISO 13256-1, that specifies a set of
conditions by which efficiency is determined. The rating for
heating is Coefficient of Performance (COP). It's a ratio of
the amount of energy used to operate the unit compared to
the amount of energy output. Bryant's highest efficiency
geothermal units have a COP in excess of 4.5 (that's 450%
efficient), compared to the highest efficiency gas furnace
with a COP of 0.95 (95% efficient AFUE) or a high-efficiency
heat pump with an average seasonal COP around 1.8. The
rating for cooling is called Energy Efficiency Ratio (EER). It's
calculated by dividing BTUs per hour output into the watts
used. Bryant's highest efficiency geothermal units have EERs
around 18-27. That's about 30-50% better than many air
conditioners and heat pumps. But because geothermal units
are not rated according to the same industry standard as
furnaces, air conditioners, and heat pumps, it is difficult to
compare, for example, an AFUE and HSPF to COP, or SEER
to EER. To get the full energy efficiency story, compare the
dollars. Your Bryant dealer can calculate operating cost
estimates using Bryant's GeoDesigner software.
Q: Are geothermal systems more expensive to install, and how
long does it take for the extra expense to pay for itself?
A: Geothermal systems are generally more expensive to install than
ordinary systems. For replacement installations, the added cost is
usually recovered in a few years. In a new home where the added
cost of the system is included in the mortgage, the monthly energy
savings may be greater than the added cost, providing the homeowner with a positive cash flow from day one. Because every situation is somewhat unique, your Bryant dealer can demonstrate the
complete financial scenario for your home using the GeoDesigner
software. Many homeowners find that a Bryant geothermal system
is a great investment.
Factoids
● With over 1 million geothermal installations, the total estimated
annual energy savings is 8 billion kWh of electricity and 40 billion
BTUs of fossil fuels. It reduces our reliance on imported fuels by
21.5 million barrels of crude oil per year.
● Homeowners with geothermal systems installed are saving a
combined, estimated $750 million over 20 years.
● The amount of the sun's energy absorbed by the earth is more than
500 times the energy required for all of mankind every year.
● Geothermal systems installed in schools are saving over $25 million
in energy costs annually, saving more money for books, equipment
and teachers.
(Source: Geothermal Heat Pump Consortium)
● Surveys by utilities have shown that more than 95% of geothermal
system owners would recommend the technology to others.
Incentives, Rebates and Tax Credits
Because geothermal systems can be part of the solution for national
energy policy, and for efficiency programs of various utilities, many
incentives are available throughout the U.S. and Canada. Check with
your Bryant dealer and tax professional to find out what incentives
are available in your area.
Limited Warranty
Bryant geothermal units are backed with a 10-year limited warranty
on the compressor and major refrigeration components, and 5-years
on all other parts. Extended warranties providing labor allowances
are available. Ask your Bryant dealer for details.
Q: Is comfort compromised to get all this efficiency?
A: No. In fact, geothermal systems can provide exceptional
comfort without the “cold blow” from an air source heat
pump during heating; or short, hot blasts of air associated
with standard efficiency gas furnaces. Geothermal units
deliver air at temperatures that provide comfort throughout
the house. The Bryant dual capacity units with variable
speed fans precisely match the needs of the home to deliver
comfort no matter what the outdoor air temperature is.
Q: Can a geothermal unit be combined with a gas or
propane furnace?
A: Yes. Some homeowners like the benefits of both technologies. In this case, a geothermal “split” unit (compressor only)
is connected to a furnace and cooling coil. The geothermal
unit will perform all the cooling and some of the heating.
During the coldest days, the system switches over to furnace
operation. This type of system may be a good choice for a
replacement installation.
A Member of the United Technologies Corporation Family.
Stock Symbol UTX.
01-8110-763-25
© Bryant Heating and Cooling Systems 2009
7310 West Morris Street, Indianapolis, IN 46231
Visit our website at www.bryant.com
Before purchasing this appliance, please read the important
energy cost and efficiency information available from your dealer.
Manufacturer reserves the right to discontinue, or change, at
any time, specifications or designs without notice and without
incurring obligations.
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