Geothermal Cost
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Northeast Utilities in
Hartford, Connecticut,
promotes a program it calls
the "Energy Crafted Home"
(ECH).
A shining example of such an
Energy Crafted Home is the
Palmer residence in East
Hampton, Connecticut.
It is a two-story colonial with
2,987 square feet of
conditioned space and 3,537
square feet total. Wall
insulation is sprayed foam
with an R-value of 20.
Hartford, Connecticut,
promotes a program it calls
the "Energy Crafted Home"
(ECH).
A shining example of such an
Energy Crafted Home is the
Palmer residence in East
Hampton, Connecticut.
It is a two-story colonial with
2,987 square feet of
conditioned space and 3,537
square feet total. Wall
insulation is sprayed foam
with an R-value of 20.
To ensure air quality in their well-sealed home, the Palmers installed a heat recovery
ventilator that provides fresh, outside air without the usual energy penalties by tying
into the air distribution side of the GeoExchange heat pump. The ECH measures result in
a heating load of 49,614 Btu per hour and a cooling load of 30,568 Btu per hour.
The house is heated and cooled by a 4.2-ton WaterFurnace GeoExchange heat pump.
The closed-loop ground heat exchanger uses two vertical 250-foot wells and 1,000 feet
of polyethylene tubing.
A desuperheater preheats the hot water to dramatically reduce propane consumption of
the traditional water heater. The propane water heater also provides back-up space
heating via a hot water coil mounted in the GeoExchange heat pump.
In the event of an electrical power outage, the circulating pump for the coil, air handler
blower, and controls are connected to an emergency generator. While prepared for any
situation, Dr. Palmer has rarely had to rely on his back-up system .
Geothermal System Cost
The geothermal equipment and ductwork cost the Palmers $10,541, and the ground loop
ran $8,742. The total GeoExchange system cost of $19,283 reflects the high prices
experienced in the northeast U.S. However, competing HVAC systems are also more
expensive than in other areas of the country. The Palmers received a quote of $16,200
for an oil-fired furnace and electric central air conditioning system.
Rebate
The Palmer residence qualified for two rebates under the Energy Crafted Home program.
The insulation, air-sealing, and window measures earned the Palmers $1 per square foot
of conditioned space or $2,987. The rebate for the GeoExchange system was $713 per
ton for a total of $2,971.
The GeoExchange heat pump operates at different efficiencies at each of its two speeds,
and the GeoExchange system rebate per ton was based on the weighted average
efficiency. The Palmer's total rebate of $5,958 results in a net GeoExchange system cost
of $13,325 -- less than the cost of the competing oil-fired system, which would not have
earned any rebates under the electric utility's ECH program
ventilator that provides fresh, outside air without the usual energy penalties by tying
into the air distribution side of the GeoExchange heat pump. The ECH measures result in
a heating load of 49,614 Btu per hour and a cooling load of 30,568 Btu per hour.
The house is heated and cooled by a 4.2-ton WaterFurnace GeoExchange heat pump.
The closed-loop ground heat exchanger uses two vertical 250-foot wells and 1,000 feet
of polyethylene tubing.
A desuperheater preheats the hot water to dramatically reduce propane consumption of
the traditional water heater. The propane water heater also provides back-up space
heating via a hot water coil mounted in the GeoExchange heat pump.
In the event of an electrical power outage, the circulating pump for the coil, air handler
blower, and controls are connected to an emergency generator. While prepared for any
situation, Dr. Palmer has rarely had to rely on his back-up system .
Geothermal System Cost
The geothermal equipment and ductwork cost the Palmers $10,541, and the ground loop
ran $8,742. The total GeoExchange system cost of $19,283 reflects the high prices
experienced in the northeast U.S. However, competing HVAC systems are also more
expensive than in other areas of the country. The Palmers received a quote of $16,200
for an oil-fired furnace and electric central air conditioning system.
Rebate
The Palmer residence qualified for two rebates under the Energy Crafted Home program.
The insulation, air-sealing, and window measures earned the Palmers $1 per square foot
of conditioned space or $2,987. The rebate for the GeoExchange system was $713 per
ton for a total of $2,971.
The GeoExchange heat pump operates at different efficiencies at each of its two speeds,
and the GeoExchange system rebate per ton was based on the weighted average
efficiency. The Palmer's total rebate of $5,958 results in a net GeoExchange system cost
of $13,325 -- less than the cost of the competing oil-fired system, which would not have
earned any rebates under the electric utility's ECH program
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