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Geothermal saves on family heating bills
In 1994, Al and Jan Stranz retrofitted their early 80’s ranch home to utilize geothermal heating and cooling. Some more details about the home and system:
- The home is a single story, 1,440 ft2.
- The system consists of 1600’ of loop buried in one wide 200’ trench, serving a 3.5 ton heat pump.
- A desuperheater is integrated into the system for ultra-efficient hot water production.
- The system has been very reliable; in 14 years the only maintenance has been some minor tuning of the loop pump.
- Heating, hot water, and cooling bills for the family totaled just $1,026 in 2007 (at $0.10/kWh).
Large high school implements geothermal and saves 40 percent
When the city of Fond Du Lac was planning a new high school to serve over 2,000 students they wanted a system that would be energy efficient, to benefit both the environment and the communities budget. They chose a geothermal heat pump system, which was conveniently integrated into the ponds planned for the school site.
- The school is 400,000 square feet, requiring a 700-ton heat pump system.
- Two six-acre ponds, about 20 feet deep, were used for the geo loop. 41 miles of pipe were laid in the ponds.
- Fresh air is delivered efficiently to each classroom using a dedicated outdoor air system with heat recovery.
- Energy savings is estimated to be 30% below a standard VAV system.
- Between energy savings and peak demand reduction from the efficient heat pump system, the district avoids $290,000 in annual costs.
- This includes significant reductions in maintenance – the geothermal system requires only filter changes (quarterly).
Geothermal system a success for local small business
Air Care, Inc., a contractor of heating and cooling systems, chose to install a geothermal heat pump system in their new building to take advantage of increased comfort and lowered utility bills. The facility is located in Beaver Dam, WI.
- 8,000-square-foot building divided between shop and office/showroom areas.
- Structural steel commercial building
- Vertical system installed; 12 wells each 150 feet deep.
- 12-ton water-to-air and water-to-water combination units.
- A desuperheater integrated into the system provides free hot water for the facility’s operations during much of the year.
- Heating and cooling bills for the entire facility averaged just $122 per month the first year.