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    Geothermal Operation - Winter
  • How does Geothermal Work?

    A geothermal heating and cooling system works much like a traditional heat pump. However, while a traditional heat pump (referred to as an air source heat pump) pulls heat from the air to heat your home, a geothermal heat pump (referred to as a ground source heat pump) pulls heat from the ground to heat your home. In the summertime, a heat pump works in reverse by "pulling" coolness either from the air or from the earth.

  • What is the advantage of Geothermal?

    During the Winter, for example, the clear advantage of a geothermal heat pump is that it is easier, and therefore more cost-effective, to extract heat from the 55-degree earth than from 15-degree air. During the Summer, the advantage of a ground source heat pump is that it is easier, and again more cost-effective than a traditional air source heat pump, to extrace "coolness" from the 55-degree earth than from 95-degree air.

  • Geothermal Operation - Summer
  • Exactly what is a ground source heat pump?

    Ground source heat pumps (GSHPs) are electrically powered systems that tap the stored energy of the greatest solar collector in existence: the earth. These systems use the earth's relatively constant temperature to provide heating, cooling, and hot water for your home.

  • How does a ground source heat pump work?

    Ground source heat pumps can be categorized as having closed or open loops, and those loops can be installed in three ways: horizontally, vertically, or in a pond/lake. The type chosen depends on the available land areas and the soil and rock type at the installation site.

    For closed loop systems, water or antifreeze solution is circulated through plastic pipes buried beneath the earth's surface. During the winter, the fluid collects heat from the earth and carries it through the system and into the building. During the summer, the system reverses itself to cool the building by pulling heat from the building, carrying it through the system and placing it in the ground.

  • Cost Effectiveness

    On average, a geothermal heat pump system costs about $2,500 per ton of capacity, or roughly $7,500 for a 3-ton unit (typical residential size). In comparison, other systems would cost about $4,000 with air conditioning. When included in the mortgage, the homeowner has a positive cash flow from the beginning. For example, the extra $3,500 might add $30 per month to a monthly mortgage payment. The energy cost savings will easily exceed this added amount over the course of the year.

  • Durability

    Because they use fewer mechanical components, and because those components are sheltered from the elements, leaves, dirt, and possible vandalism, geothermal heat pumps are durable and highly reliable. The underground piping used in the system often has 25- to 50- year warranties, and geothermal heat pumps typically last 20 years or more.

  • Low Maintenance

    Geothermal heat pump systems have fewer maintenance requirements than most other systems. When properly installed, the underground components are virtually worry-free. The components in the living space are easily accessible, which increases the convenience factor and helps ensure that the upkeep is done on a timely basis.

  • Year-Round Comfort

    Like typical forced-air furnace or central air-conditioning system, a geothermal system uses ductwork. A two-speed geothermal heat pump is so quiet inside a house that users do not know it is operating: there are no telltale blasts of cold or hot air, depending on whether it's the heating or cooling season.

    Geothermal heat pumps also improve humidity control naturally.

  • Quiet Operation

    Geothermal heat pumps use no outside condensing units (as you get with conventional air conditioners), so there's no noise or humming to bother either you or your neighbors.

30% Tax Credit

The Federal Government is currently offering a onetime tax credit of 30% of the total investment for homeowners who install a residential ground loop geothermal heat pump.

This means that you can get a new Geothermal HVAC System in your new home for about 25% of the upgrade cost!


The tax credit is available through December 31, 2016. Consult your local tax professional for advice on taking advantage of the tax credit, as this announcement is not intended as a recommendation or endorsement of any financial strategy.