⚠️ Program Update Notice (2026): The federal residential energy tax credits described in this guide were modified by the One, Big, Beautiful Bill Act (OBBB), signed July 4, 2025. Sections 25D, 25C, 30D, 25E, and 30C have been repealed or terminated on various dates between September 30, 2025 and June 30, 2026. This page is preserved for historical reference. For current incentives, check your state’s energy office and the official IRS / DOE / DSIRE sources cited at the bottom of this page.
Homeowners considering upgrades to their heating and cooling systems may be eligible for a significant federal tax credit. The Energy Efficient Home Improvement Credit, often referred to as the Heat Pump Tax Credit (Section 25C), offers qualifying taxpayers a credit of up to $2,000 annually for installing a new, energy-efficient heat pump, representing 30% of the cost of eligible improvements.
Understanding the Energy Efficient Home Improvement Credit (Section 25C)
The Energy Efficient Home Improvement Credit, codified under 26 U.S.C. § 25C of the Internal Revenue Code, is a federal initiative designed to encourage homeowners to invest in energy-efficient upgrades for their existing homes. This program allows eligible taxpayers to reduce their federal income tax liability by claiming a percentage of the cost of certain qualified improvements. The credit is available for improvements made and placed in service through December 31, 2032, based on current IRS guidance.
What the Program Covers
While the credit is commonly associated with heat pumps, it actually encompasses a broader range of energy-efficient home improvements. For the purposes of this article, we will focus primarily on heat pumps, but it’s important to understand the full scope. The credit generally covers 30% of the cost of qualifying expenditures, including:
- Qualified Energy-Efficient Heat Pumps: This includes electric or natural gas heat pumps that meet specific energy efficiency requirements.
- Qualified Energy-Efficient Heat Pump Water Heaters: Similar to heat pumps, these must meet defined efficiency standards.
- Qualified Biomass Stoves and Boilers: Heating systems that use biomass fuel.
- Certain Building Envelope Components: This category includes insulation materials, air sealing materials or systems, and energy-efficient exterior windows, skylights, and exterior doors.
- Home Energy Audits: Costs associated with a home energy audit conducted by a qualified professional.
It is important to note that the credit is a non-refundable tax credit, meaning it can reduce a taxpayer’s tax liability to $0, but it will not result in a refund beyond the amount of tax owed. Furthermore, this credit does not have a carryforward provision, so any unused credit amount in a given tax year generally expires. Taxpayers typically claim this credit for improvements made to an existing home, not for new construction.
Who Qualifies for the Energy Efficient Home Improvement Credit?
Eligibility for the Section 25C credit generally depends on several factors related to the taxpayer and the property being improved. Understanding these rules is crucial before undertaking any projects.
Taxpayer Eligibility
The credit is generally available to individual taxpayers who make qualifying energy-efficient improvements to their homes. The home must typically be an existing home located in the United States. While the credit often applies to a taxpayer’s primary residence, the specific rules for certain improvements may vary. For example, the credit generally applies to improvements made to an existing home, not a newly constructed one.
Property and Equipment Requirements
To qualify for the credit, the improvements must meet specific criteria:
- Existing Home: The improvements must be installed in an existing home, not a new build. This typically means the home must have been substantially completed before the improvements were made.
- New Equipment: The equipment installed, such as a heat pump, must be new and not previously used.
- Energy Efficiency Standards: All qualifying equipment and materials, including heat pumps, heat pump water heaters, and biomass stoves, must meet specific energy efficiency requirements set by the IRS and Department of Energy. Taxpayers should consult manufacturer’s certification statements or product specifications to verify compliance. These standards are subject to change, so verifying the most current requirements is important before purchase.
- Placed in Service: The improvement must be “placed in service” during the tax year for which the credit is claimed. This means the installation must be complete and the equipment ready for its intended use.
It is generally advisable for taxpayers to retain all purchase receipts, invoices, and manufacturer’s certification statements for any qualifying property, as these documents may be required to substantiate the credit claim.
How Much Can You Get? Understanding the Credit Amounts and Caps
The Energy Efficient Home Improvement Credit generally allows taxpayers to claim 30% of the cost of eligible improvements. However, there are specific annual dollar limits, or caps, that apply to different types of improvements. These caps are crucial for determining the maximum credit a taxpayer may receive in a single tax year.
Specific Item Caps
Certain high-value energy-efficient systems have their own distinct annual credit caps:
These $2,000 caps are applied individually to each category. For example, a taxpayer could potentially claim $2,000 for a heat pump and an additional $2,000 for a heat pump water heater in the same year, assuming both meet eligibility requirements and costs justify the maximum credit.
Aggregate Annual Cap for Other Improvements
For most other qualifying home improvements—including insulation, air sealing, windows, skylights, exterior doors, and home energy audits—there is a combined annual aggregate cap. The total credit claimed for all these “other” improvements in a single tax year generally cannot exceed $1,200.
Within this $1,200 aggregate cap, there are further sub-limits for specific items:
It is important to understand that the $2,000 caps for heat pumps, heat pump water heaters, and biomass stoves are separate from and do not count towards the $1,200 aggregate annual cap for the other improvements. This means a taxpayer could potentially claim a total credit exceeding $1,200 in a single year if they install a qualifying heat pump in addition to other eligible improvements.
The credit is non-refundable, meaning it can reduce a taxpayer’s tax liability to zero, but it will not result in a refund of taxes beyond what is owed. There is generally no provision to carry forward any unused credit amount to future tax years. Taxpayers should verify current IRS guidance and the specific energy efficiency requirements for equipment before making purchasing decisions, as these details may be updated. The credit is scheduled to expire on December 31, 2032.
How to Claim the Energy Efficient Home Improvement Credit
Claiming the Energy Efficient Home Improvement Credit (Section 25C) involves a straightforward process during federal income tax filing. However, careful record-keeping and attention to detail are important.
Required Form
To claim the credit, taxpayers must file IRS Form 5695, “Residential Energy Credits,” with their federal income tax return (Form 1040). This form is used to calculate the amount of the credit based on the qualifying expenditures and applicable caps. The instructions for Form 5695 provide detailed guidance on how to complete the form and what information is needed.
Documentation and Record-Keeping
While you typically do not submit documentation with your tax return, it is critical to maintain thorough records in case the IRS requests verification. Essential documents to keep include:
- Receipts and Invoices: Detailed receipts or invoices for the purchase and installation of all qualifying improvements, clearly showing the cost of materials and labor (excluding installation costs for certain items like insulation, but generally included for equipment like heat pumps).
- Manufacturer’s Certification Statements: For equipment such as heat pumps, heat pump water heaters, and biomass stoves, manufacturers generally provide a certification statement. This document confirms that the product meets the specific energy efficiency requirements to qualify for the credit. It is advisable to obtain and retain these statements.
- Proof of Installation Date: Documentation showing when the improvement was “placed in service” (i.e., installed and ready for use), as the credit must be claimed in the tax year the improvement was placed in service.
Process and Timing
Taxpayers generally claim the credit for the tax year in which the qualifying property is placed in service. For example, if a heat pump is purchased in December 2023 but installed and operational in January 2024, the credit would typically be claimed on the 2024 tax return. Since the credit is non-refundable and has no carryforward provision, it is important to claim it in the correct year. Taxpayers should consult the most current IRS publications or a tax professional for personalized advice.
Common Mistakes When Claiming the Energy Efficient Home Improvement Credit
Navigating tax credits can sometimes lead to errors that may result in a disallowed credit or delays. Here are some common pitfalls taxpayers may encounter when claiming the Energy Efficient Home Improvement Credit:
Frequently Asked Questions
Is the Heat Pump Tax Credit refundable?
No, the Energy Efficient Home Improvement Credit (Section 25C) is a non-refundable tax credit. This means it can reduce your federal income tax liability down to $0, but it will not result in a tax refund if the credit amount exceeds your tax liability. For example, if your tax liability is $1,500 and you qualify for a $2,000 credit, the credit will reduce your tax owed to $0, but you will not receive the remaining $500 as a refund.
Can I claim the credit for multiple heat pumps in one year?
The $2,000 annual cap for heat pumps applies to all qualifying heat pumps installed in a single tax year. Therefore, if you install multiple heat pumps in the same year, your total credit for heat pumps for that year is still capped at $2,000, assuming all other eligibility criteria are met. However, this cap is separate from the $2,000 caps for heat pump water heaters and biomass stoves, and the $1,200 aggregate cap for other improvements.
Does this credit apply to new construction homes?
Generally, no. The Energy Efficient Home Improvement Credit (Section 25C) is designed for improvements made to an existing home. It typically does not apply to newly constructed homes. Taxpayers building a new home may need to explore other federal or state programs that may be applicable to new, energy-efficient construction.
What documentation do I need to keep for the credit?
It is essential to keep thorough records to substantiate your claim. This generally includes detailed receipts and invoices for the purchase and installation of all qualifying improvements. For equipment like heat pumps, you should also retain the manufacturer’s certification statement, which confirms that the product meets the specific energy efficiency requirements to qualify for the credit. These documents are generally not submitted with your tax return but should be kept in case of an IRS inquiry.
When to Get Professional Help
Most homeowners can claim residential energy credits without professional help by filling out IRS Form 5695. Many people, however, find it helpful to consult a licensed tax professional when one or more of the following applies:
- The project involves multiple credits across several years (Section 25C has annual caps that interact with each other)
- You are claiming the Residential Clean Energy Credit (Section 25D) on a property that mixes primary and rental use
- Your tax liability is below the credit amount and you need to carry forward to future years
- You bought an EV through a dealer transfer (Section 30D point-of-sale option) and want to confirm the paperwork
- You qualify for HEEHRA point-of-sale rebates that interact with federal tax credits
- You operate a home-based business or claim home office deductions in addition to energy credits
For straightforward residential installations of a single technology in a single tax year, the IRS Form 5695 instructions are generally sufficient.
Reviewed by Gov Money Map Editorial Team — Last verified: 2026-05-13
Sources: IRC § 25C; IRS Form 5695 instructions
DISCLAIMER: Gov Money Map is not a government agency, tax advisor, financial advisor, or law firm. This page provides general educational information only. Federal and state incentive programs change frequently — verify current rules with the official source (IRS, DOE, your state energy office) before filing or making a purchase decision. Last updated: May 2026.