GeoThermal Case Studies

A WaterFurnace system operates more efficiently than ordinary heating and air conditioning systems—30 to 60 percent more efficiently, in most cases. "Download this case study as a PDF here.":http://www.energywebsolutions.net/clients/1955/httpdocs/files/Sample_House_Plans.pdf This is an example of a house plan; in which we recently installed a geothermal HVAC system. *The 1st floor is 1839 Sq. Ft. & The 2nd floor is 922 Sq. Ft.* p=. This compares the potential operating cost for the sample house. The Base System shown is a Carrier 93% efficient LP furnace and a 13 S.E.E.R. air conditioner complying with the DOE’s 13 S.E.E.R. mandate. p=. For system pay back, Look down the savings column until you find the cost of a geothermal HVAC system OVER AND ABOVE the cost of your propane system. p=. For return on investment (ROI) divide the ANUAL savings ($2,027.00)by the cost of a geothermal HVAC system OVER AND ABOVE the cost of your propane system. p=. This is the equipment that was used for the comparison p=. p=. A lower propane cost was used than was published on the DOE's website. p=. This is a case study of a house with a 4-ton geothermal HVAC system. Listed are the actual electric bill amounts from September 2004 through August 2005. p=.