Connecticut Heat Pump Rebates

What's available in Connecticut

Connecticut runs a coordinated statewide heat pump incentive program under the Energize CT brand, jointly delivered by Eversource and United Illuminating and overseen by DEEP and the Connecticut Green Bank. The flagship Energy Optimization rebate (up to $10,000) is the largest, designed for whole-home installs that displace fossil or resistance heating; a separate $2,500 Air-Source rebate covers replacement and cooling-only scenarios. CT DEEP is rolling out the federal IRA HEAR/HEEHRA program with up to $8,000 in income-qualified rebates layered on top, and the CT Green Bank Smart-E Loan provides low-interest financing (0.99% APR special offer through June 2026) through participating lenders.

HEEHRA in Connecticut

HEEHRA rebate: Point-of-sale rebate up to $8,000 for households at or below 80% of area median income. Funded by the IRA, administered by each state. Connecticut is finalizing program rules.

How heat pump rebates work in Connecticut

Connecticut runs a coordinated statewide heat pump program through Energize CT, jointly delivered by Eversource and United Illuminating and overseen by DEEP and the Connecticut Green Bank. The flagship Whole-Home Energy Optimization rebate pays up to $10,000 (starting at $1,000 per ton) for whole-home installs that fully displace or integrate with existing oil, propane, natural gas, or electric resistance heating. A separate Residential Air-Source rebate pays up to $2,500 for replacement, cooling-only, or new-construction scenarios — but the two tiers are mutually exclusive: a single install qualifies for one or the other, and you can't claim both for the same equipment. Heat pump water heaters carry a $900 instant or downstream rebate for 2026. CT DEEP is rolling out the federal IRA HEAR program for households below 150% AMI (up to $8,000 layered on top), and the CT Green Bank Smart-E Loan provides low-interest financing through participating lenders. Because Eversource and UI together serve effectively all of Connecticut, every electric customer in the state has access to the same Energize CT rebate menu.

Connecticut rebate programs

4 utility-specific programs not shown here. Enter your ZIP in the calculator to filter to just your utility.

A worked example: oil-to-heat-pump conversion in Hartford

Eduardo owns a 1,800 sq ft single-family home in West Hartford, currently heated by a 28-year-old oil-fired boiler (hydronic baseboards) with no central AC. He's an Eversource electric customer. He gets quotes for a 3-ton ducted air-source heat pump installed with new ductwork (since the existing home is hydronic), full displacement of the oil system, and a NEEP cold-climate certified outdoor unit (Mitsubishi Hyper Heat). Installed cost including ductwork: $24,500. Because this is a whole-home install with full oil displacement, he qualifies for the Energize CT Energy Optimization rebate at $1,000 per ton — at 3 tons that's $3,000, comfortably under the $10,000 cap. His household income is approximately 75% of Hartford's AMI, putting him below the 150% threshold for CT HEAR; the HEAR adder lands at $8,000 (the maximum for a heat pump install at his income tier, assuming HEAR has launched in CT for moderate-income households by his install date — confirm program status). Combined stack: $3,000 + $8,000 = $11,000 against $24,500. He also has the option of a Smart-E Loan from the CT Green Bank at low interest to finance the post-rebate balance.

Choosing a contractor in Connecticut

Connecticut licenses HVAC contractors statewide through the Department of Consumer Protection — verify license type S-1 (Heating, Piping & Cooling Contractor) at portal.ct.gov. Energize CT rebates require an installer in the Energize CT Heat Pump Installer Network (HPIN); a non-HPIN contractor cannot file the rebate even with qualifying equipment. The HPIN roster is searchable on EnergizeCT.com. For the $10,000 Energy Optimization tier, the contractor must verify that the heat pump fully displaces or integrates with the existing heating system; partial-load installs without backup-heat planning typically default to the $2,500 Residential ASHP tier instead. Confirm the rebate path with your contractor at the quote stage so the right paperwork gets filed.

Common pitfalls for Connecticut homeowners

• Treating Energy Optimization and Residential ASHP as stackable. The two Energize CT tiers are mutually exclusive per install: $10,000 Whole-Home Energy Optimization for full fossil/resistance displacement OR $2,500 Residential ASHP for replacement/cooling-only/new-construction. A single install cannot claim both. Choose the tier that matches your install scenario before filing.
• Skipping cold-climate certification for full-displacement installs. For the $10,000 tier where the heat pump must carry the full heating load through Hartford or New Haven winters, NEEP cold-climate certification is functionally required even though Energize CT's published spec doesn't explicitly demand it. Non-cold-climate equipment that loses too much capacity at 5°F will require oversized auxiliary resistance heat, which can disqualify the install from the Energy Optimization tier.

Estimate your net cost

How to claim each rebate

1. Get pre-approved (where required). Some utility programs require approval before install. Check program details before signing a contract.
2. Use a participating contractor. Many programs require a licensed installer from an approved contractor list — especially HEEHRA, which routes through CEC-approved contractors who process the rebate at point of sale.
3. Save documentation. AHRI certificate, model numbers, and itemized invoice are required for most utility rebates.
4. Submit utility rebate within 60–90 days of install. Some programs are first-come first-served and close mid-year — funding can run out before the calendar year does.

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