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Ground Source Heat Pump Rebates
Heat and cool your home from the ground up! Save with an incentive of up to $15,000 per home
Rebates and Instant Discounts
  • Heating & Cooling
  • New Construction or Major Renovation
  • Rebates
  • Renewable Energy

Efficient and environmentally friendly, ground source (geothermal) heat pumps use the stable, even temperature of the earth to heat and cool your home.

Ground Source Heat Pump Benefits:

  • Low-Cost Heating and Cooling: Compared to other heating and cooling systems, ground source heat pumps typically cost less to operate.
  • Low-Cost Maintenance: Compared to other heating and cooling systems, ground source heat pumps typically have lower maintenance costs.
  • Comfort and Convenience: Ground source heat pumps provide consistent indoor temperature and humidity levels.
  • Environmentally Friendly: Ground source heat pumps offer the potential to have zero greenhouse gas impacts when paired with a 100% renewable energy source. 

Compared to heating with oil, propane, or electric baseboard, heat pumps are the lowest cost fuel source. They might cost more upfront for installation and increase your household electricity bill, but you’re likely to save money in the long run because they don’t require expensive fossil fuels to run. Plus, Energize Connecticut offers cash incentives and low-interest subsidized financing to help pay for installing a heat pump.

Heat pumps also significantly reduce a big cost that is an increasing concern in Connecticut: the escalating cost of climate change. Learn more about the benefits of heat pumps and use the Clean Heating & Cooling Calculator on our Clean Heating and Cooling page to see what a heat pump would mean for your home’s budget—and how much it would reduce your carbon emissions.

Additional Details

A ground source heat pump takes advantage of the earth’s constant temperature to provide highly efficient heating and cooling. In the winter, fluid circulating in underground pipes carries the earth’s heat to your home, where it is then concentrated to provide heating. In the summer, the process is reversed and heat from your home is carried back to the earth through the pipes to provide cooling.

Ground source heat pump systems have three main parts:

  1. A closed loop, which circulates fluid through an underground field. The loop is enclosed in vertical and/or horizontal trenches.
  2. Single or multiple pumps, fans, and compressors that provide heating and cooling.
  3. A distribution system, typically ductwork, that carries air throughout the home to maintain an even temperature.

According to studies, ENERGY STAR® certified ground source heat pumps can reduce energy costs by 20 to 70 percent. A ground source heat pump is a reliable, low-maintenance, and environmentally friendly heating and cooling choice. It operates safely and quietly, with no combustion, direct emissions, or exposed outdoor equipment, such as a fuel tank. Because it is mechanically simple and all exterior equipment is below ground, protected from the weather, maintenance costs are often lower than other heating and cooling systems.

Eversource and UI residential electric service customers are eligible for incentives for the installation of a ground source heat pump closed loop or direct expansion, packaged or matched coil/split* including water to water-designed types up to six tons per unit.

Ground source heat pump equipment must be a closed loop or direct expansion type and ENERGY STAR® certified in order to be eligible for a rebate.

A list of ENERGY STAR certified ground source (geothermal) heat pump equipment can be found on the ENERGY STAR website. You can also refer to the rebate application for equipment eligibility requirements.

Incentives for qualifying units:

Existing homes heating with electric or natural gas: $750 per AHRI-rated cooling ton for successfully commissioned geothermal systems with a maximum incentive amount of $15,000 per home.

Existing homes heating with oil or propane: $1,500 per ton with a maximum incentive amount of up to $15,000 per home.

The average Connecticut home is eligible to receive more than $7,500 when upgrading to ground source heat pumps. 


*Multiple sections and fans must be AHRI matched.

If you are a Connecticut resident and are not served by one of the utilities listed above, please visit your municipal utility’s website to see what programs are available to you. 

Call 877-WISE-USE (877-947-3873) for more information.

Step 1 -

To see which ground source heat pump systems qualify for a rebate, see the "Who is Eligible & System Requirements" section above. Refer to the Ground Source Heat Pump Rebate Application for Existing Homes for additional requirements, terms and conditions.

$750 per ton - customers who heat with electricity or natural gas 
Up to $1,500 per ton - customers who heat with fuel oil or propane
Total incentive amount not to exceed $15,000 per home

Step 2 -

Choose a geothermal contractor for your installation.

Step 3 -

Have your qualifying unit installed.

Step 4 -

Save time and money – click here to apply for a rebate and submit the required documentation online. 

If you wish, you have the option to mail in the completed application and any documentation instead. See the application for further details.

Call 877-WISE-USE (877-947-3873) for more information.