ANSWERS: 1
  • According to the U.S. Department of Energy (DOE), a geothermal heat pump system cost $2,500 for each ton of capacity in 2009. An average home needs a three-ton pump. You will also need to factor in the cost of drilling, which the California Energy Commission estimated at $10,000 to $30,000 in 2006.

    Source:

    Energy Savers

    Consumer Energy Center

    Resource:

    ToolBase.org: Geothermal Heat Pumps

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