Connecticut Heat Pump Rebates & Incentives Guide

Quick Answer: Connecticut Heat Pump Rebates at a Glance

Connecticut offers multiple overlapping incentives for heat pump installations. Qualifying systems may be exempt from property taxes. Geothermal systems may also be exempt from sales and use tax on equipment and labor. The Connecticut Clean Energy Fund, administered by CT Green Bank, and the Connecticut Energy Efficiency Fund, administered by Energize CT, both provide funding for clean and efficient energy upgrades. Norwich Public Utilities also offers rebate programs for residential and commercial customers. Federally, the Inflation Reduction Act (IRA) created tax credits and rebate programs that can be combined with state and utility savings.

These programs are designed to be combined. A homeowner installing a qualifying heat pump could claim a federal tax credit under IRS §25C, avoid a property tax assessment increase under Connecticut's property tax exemption, and collect a utility rebate from their electric provider. Each layer requires its own application, but none prohibit the others.

Connecticut State-Level Heat Pump Incentives and Tax Exemptions

Property Tax Exemption for Renewable Energy Systems

Connecticut exempts qualifying renewable energy systems from property taxes, preventing an increase in your home's assessed value due to the addition of a heat pump or geothermal system. The statewide exemption covers "Class I" renewable energy systems and hydropower facilities that generate electricity for private residential use. To qualify, the system must have been installed on or after October 1, 2007, and must serve a farm, single-family home, or a multi-family dwelling of up to four units.

Separately, "any passive or active solar water or space heating system or geothermal energy resource" is exempt from property taxes regardless of the type of facility it serves. This broader geothermal exemption is not limited to residential properties. Consult the Connecticut Department of Revenue Services for current statutory language and eligible system classifications.

Local Option Property Tax Exemption

Beyond the statewide exemption, Connecticut municipalities are authorized, but not required, to offer a property tax exemption for up to 15 years for qualifying cogeneration systems installed on or after July 1, 2007 (Conn. Gen. Stat. §12-81(63)). Starting in October 2013, municipalities may also adopt ordinances to exempt commercial or industrial Class I renewable resources. A municipality that adopts such an ordinance may require a payment in lieu of taxes from the property owner. Contact your town assessor's office to determine if your municipality has adopted this local option.

Sales and Use Tax Exemption for Solar and Geothermal Systems

Connecticut enacted H.B. 7432 in June 2007, establishing a sales and use tax exemption for solar energy equipment and geothermal resource systems. The exemption covers both the equipment itself and the labor for installation. Eligible technologies include passive and active solar water-heating systems, passive and active solar space-heating systems, solar-electric systems, and geothermal resource systems. Consult the Connecticut Department of Revenue Services to confirm if a specific heat pump configuration qualifies under the geothermal category.

Standard air-source heat pumps are not explicitly listed in the sales tax exemption; geothermal (ground-source) heat pumps have the clearest path to this benefit.

Connecticut Clean Energy Fund (CT Green Bank)

Connecticut's electric restructuring legislation established the Renewable Energy Investment Fund, later renamed the Connecticut Clean Energy Fund. The Clean Energy Finance and Investment Authority (CEFIA), a quasi-governmental investment organization now operating as CT Green Bank, was given authority to administer it (Public Act 98-28). The fund is sustained by a surcharge on Connecticut ratepayers' utility bills and is used to develop, invest in, and promote sustainable energy sources. CT Green Bank operates financing programs and partnerships that can reduce upfront costs for qualifying installations. Consult CT Green Bank at ctgreenbank.com for current program offerings, as specific products change.

Connecticut Energy Efficiency Fund (Energize CT)

Public Act 98-28 also created the Connecticut Energy Efficiency Fund (CEEF), administered through Energize CT. Its mission is to advance efficient energy use and reduce air pollution. Energize CT coordinates programs across utilities and serves as a clearinghouse for efficiency incentives statewide. Visit energizect.com or contact Energize CT to identify programs currently accepting applications for heat pump upgrades.

Renewables Portfolio Standard

Connecticut's Renewables Portfolio Standard (RPS), established in 1998 and revised multiple times since, requires each electric supplier and electric distribution company wholesale supplier to obtain at least 24% of its retail load from renewable energy by January 1, 2020. The RPS also requires at least 4% from combined heat and power (CHP) systems and energy efficiency. The RPS is administered by the Public Utilities Regulatory Authority (PURA) and drives utility investment in clean energy programs. See the PURA RPS overview at portal.ct.gov/pura/rps for current compliance requirements.

Utility-Specific Heat Pump Rebate Programs in Connecticut

Norwich Public Utilities: Residential Energy Efficiency Rebate Program

Norwich Public Utilities (NPU) provides residential customers with rebates on ENERGY STAR-qualified appliances and energy-efficient HVAC equipment. Heat pumps are explicitly included. Rebates are also available for central AC systems. Incentive amounts vary according to equipment size and efficiency rating. The program is limited to one rebate per appliance per residential electric utility account.

Specific dollar amounts are not detailed in the provided source material. Consult the NPU residential rebate page at norwichpublicutilities.com/residential/efficiency-programs-rebates for current figures before purchasing equipment, as amounts can change seasonally or when program funding is depleted.