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High Efficiency Furnace, Natural Gas Boiler & Boiler Circulator Pump Rebates
Warm Up to High-Efficiency Heating and Save With Instant Discounts of Up to $750
Rebates and Instant Discounts
Instant Discount
Up to $750
  • Heating & Cooling
  • Rebates

Before installing a gas furnace or boiler, consider a centrally ducted heat pump. Centrally ducted heat pumps work with your existing ductwork to both heat and cool your home. They use a relatively small amount of electricity to harvest a lot of heat from the atmosphere or ground. Then they bring the sun’s warmth into your living space during cold months—and to your faucets year-round. During the summer they efficiently cool your home by removing hot air from it and they do it without combustion or fossil fuels, so they’re clean and green.

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 use 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

In most homes, heating is the single biggest energy expense. Replacing your old furnace, boiler or boiler circulator pump with new high-efficiency heating equipment can take a bite out of your energy costs, plus make your home more comfortable.

A furnace or boiler's efficiency is measured by annual fuel utilization efficiency (AFUE) which tells you what percent of fuel is converted to useful heat for your home. The higher the AFUE, the more heat you get for your heating dollar. Older furnace and boiler systems have efficiencies in the range of 56 to 70 percent. High-efficiency heating systems achieve efficiencies as high as 97 percent, converting nearly all the fuel to useful heat for your home.

For more information on high efficiency systems, please visit the U.S. Department of Energy website. The site also features an easy-to-use table showing what you could save when you upgrade to an energy-efficient system.

Before you invest in a new furnace, boiler, or boiler circulator pump, make your home as energy efficient as possible. Improving insulation and sealing air leaks to stop heat loss may allow you to purchase a smaller, less expensive heating system. Home Energy Solutions can help you identify and make energy-saving improvements that are right for your home.

How We Help

We can help with instant discounts of $35 to $750 from the Connecticut Energy Efficiency Fund to offset the cost of installing a qualifying high-efficiency heating system.

Upgrade today and warm up to savings.

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

Saving is easy with an instant discount from Participating DistributorsStep 1

Contact your HVAC contractor to find out if a high-efficiency natural gas furnace, natural gas boiler or a boiler circulator pump makes sense for your home. Ask if they have done an efficiency test on your existing system and how it rated.

Instant discounts are available for customers of the following utilities:

Eversource       UI           CNG           SCG 

Step 2

Make your home more energy efficient to get the most out of a new heating system. Get started with help from the Home Energy Solutions program.

Step 3

Receive Your Instant Discount:

  • Prior to purchase, confirm your system qualifies for the discount with your HVAC contractor or by checking the minimum efficiency chart on the Who is Eligible section below and at the ENERGY STAR website:
  • Have your licensed contractor provide a quote for qualified equipment from a participating distributor that includes the instant discount.
  • Finally have your licensed contractor purchase and install qualified equipment from a participating distributor. It’s that easy!

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

Residential customers of Eversource, UI, CNG, or SCG are eligible to participate.

Replacement Furnace Minimum Efficiency Levels / Instant Discount Schedules

Qualifying furnace, natural gas boiler and/or boiler circulator pump must be installed by a licensed contractor in your utility’s service territory. Your contractor can help you choose equipment that meets the following criteria:

Equipment Type Minimum Efficiency for Instant Discount Instant Discount
Natural Gas Warm Air Furnace ENERGY STAR®1 certified 95% AFUE2 or greater and AHRI Rated with Electronically Commutated Motor (ECM) $650
Natural Gas Boiler ENERGY STAR certified 94% AFUE or greater with Temperature Reset or Purge Control $750
Boiler Circulator Pump Boiler circulator pump with Electronically Commutated Motor (ECM) installed on any fuel boiler $35

1 ENERGY STAR certified equipment lists can be found online by visiting 
2 AFUE – Annual Fuel Utilization Efficiency


Instant discounts are available for customers of the following utilities:

Eversource     UI     CNG     SCG

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 energy efficiency programs are available to you.

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


Offer your customers high efficiency space and water heating equipment at a reduced cost without the hassle of a rebate form.

The electric and gas utilities have partnered with many Connecticut equipment distributors to offer an instant discount at your point of purchase.  Help your customers make the decision to switch to high efficiency equipment by offering it at pricing comparable to standard equipment. 

When you purchase eligible equipment from a participating distributor, the instant discount amount has already been deducted from your purchase cost.  The distributor will request some information from you including the name and address of the customer and their housing type.

Now, you have the opportunity to offer your customer the equipment at a lower price because the incentive is already applied.  You saved your customer the hassle of completing and mailing a rebate form and provided them with superior, energy-saving equipment.

All Eversource, UI, CNG and SCG customers are eligible for instant discount, but only licensed contractors may purchase equipment with the rebate applied at the distributor. 

Below is a list of the types of equipment included. 

Equipment Type Minimum Efficiency for Instant Discount Instant Discount
ENERGY STAR Natural Gas Warm Air Furnace AHRI1 Rated CEE Tier II Criteria of 95% AFUE2 and ECM furnace fan3


ENERGY STAR Natural Gas Boiler ENERGY STAR® qualified, AHRI Rated 94% AFUE or greater with Temperature Reset or Purge Control $750
ECM Boiler Circulator Pump Eligible equipment defined by PAs   $35

AHRI - Air Conditioning Heating and Refrigeration Institute. All equipment must be rated in the AHRI Unitary or Applied Air Conditioning Directories. Both can be found at and
AFUE – Annual Fuel Utilization Efficiency
ECM furnace fans can be found at
ENERGY STAR certified equipment lists can be found online by visiting 



Submit your reimbursements online here.