Home improvement tax credits gave homeowners a direct way to reduce their federal tax bill while making their properties more energy efficient. These credits, expanded and restructured under the Inflation Reduction Act of 2022, covered a range of upgrades, from insulation and windows to heat pumps and water heaters. Federal law has since changed in an important way, so understanding how these incentives worked, who qualified, and what the deadlines were can help you sort out past returns and plan for what comes next.
This article answers one central question: which home improvements qualified for the federal Energy Efficient Home Improvement Credit, how much was available, and how did homeowners claim it? The sections below break down the rules, the dollar limits, the documentation involved, and the critical change in eligibility you need to know about.
What Are Home Improvement Tax Credits?
Home improvement tax credits are federal income tax credits available to homeowners who invest in qualifying energy-efficient upgrades to their primary residence. Unlike a tax deduction, which reduces your taxable income, a tax credit reduces your actual tax liability dollar for dollar. That distinction matters: a $500 credit saves you $500 in taxes owed, regardless of your tax bracket.
The residential energy tax credit program has evolved significantly over the years. The Inflation Reduction Act of 2022 expanded and restructured many of these credits, replacing the older Nonbusiness Energy Property Credit (which had a lifetime cap of $500) with the more generous Energy Efficient Home Improvement Credit under Section 25C. Under those rules, homeowners could claim up to $3,200 per year in credits for qualifying improvements, with no lifetime cap, for property placed in service after December 31, 2022.
That structure did not last as long as originally planned. The One, Big, Beautiful Bill Act, signed into law on July 4, 2025 (Public Law 119-21), accelerated the credit’s expiration. According to the IRS, the Section 25C credit “will not be allowed for any property placed in service after December 31, 2025.” The original 2032 sunset was moved up, so the practical window for these credits ran from 2023 through the end of 2025. The IRS describes the structure of the credit on its Energy Efficient Home Improvement Credit page and the termination on its One, Big, Beautiful Bill FAQ page.
These credits applied only to a principal residence, the home where you live most of the year. Rental properties, vacation homes, and new construction generally did not qualify for the Section 25C credit. A separate credit existed for new residential clean energy systems like solar panels under Section 25D, and it followed its own timeline and rules.
Which Upgrades Qualified for the Energy-Efficient Home Tax Credit?
Qualifying improvements fell into two main categories: building envelope improvements and energy-efficient equipment installations. Each category had its own annual credit limits, and the credit generally covered 30% of qualified costs.
Building envelope improvements include upgrades that reduce heat loss or gain in your home. The credit covered 30% of the cost of qualifying products, up to specific caps:
- Insulation and air-sealing materials that meet International Energy Conservation Code (IECC) standards, including spray foam, blown-in cellulose, fiberglass batts, and rigid board insulation. The insulation credit fell under the $1,200 annual cap for building envelope components and residential energy property.
- Exterior windows and skylights that meet Energy Star Most Efficient criteria. Windows were subject to a separate $600 annual cap.
- Exterior doors that meet applicable Energy Star requirements, capped at $250 per door and $500 total for all doors in a given year.
Energy-efficient equipment installations were also eligible for substantial credits:
- Heat pumps (including air-source and geothermal) and heat pump water heaters qualified for a credit of 30% of costs, within a $2,000 annual limit shared with biomass equipment. Heat pumps were among the highest-value upgrades because they both heat and cool a home more efficiently than many traditional systems.
- Central air conditioners that meet the Consortium for Energy Efficiency (CEE) highest efficiency tier qualified for credits up to $600.
- Natural gas, propane, or oil furnaces and boilers that met the relevant efficiency standards were eligible for credits up to $600. Energy Star certified gas furnaces generally needed an annual fuel utilization efficiency (AFUE) of 97% or higher, while qualifying gas and propane boilers generally needed an AFUE of 95% or higher.
- Biomass stoves and boilers with a thermal efficiency rating of at least 75% qualified within the $2,000 annual limit shared with heat pumps.
- Electric panel upgrades, certain wiring improvements, and home energy audits also qualified. The home energy audit credit covered up to $150 for a professional assessment.
For homeowners weighing these upgrades against the broader economics of a property, a conversation with the real estate advisors at Pease Bell can help frame the decision in the context of long-term value and cash flow.
How the Insulation Tax Credit Worked
The insulation tax credit was one of the most accessible home improvement tax credits because insulation upgrades tend to be relatively affordable and deliver measurable energy savings. Under the Section 25C program, homeowners could claim 30% of the cost of qualifying insulation and air-sealing materials, up to the $1,200 annual cap shared with other building envelope improvements like doors and windows.
To qualify, insulation had to meet or exceed IECC standards in effect for the relevant period. This included most common insulation types: fiberglass batts, blown-in cellulose, spray foam (both open-cell and closed-cell), rigid foam board, and reflective insulation barriers. The credit covered insulation installed in attics, walls, floors, crawl spaces, and basements.
One important detail involves what the credit did not cover. For building envelope components, the Section 25C credit generally applied to the cost of the qualifying materials. Roofing and structural work, along with certain related labor for building envelope components, were treated differently from the equipment categories, so the qualifying amount was not always the full project invoice.
Keep all receipts and manufacturer certifications from any qualifying year. The IRS may require documentation showing that your insulation met the applicable IECC standards, and manufacturer certification statements are the simplest way to support eligibility if a past return is examined.
Energy Star Tax Credit Requirements Homeowners Should Know
Products that carry the Energy Star label were not automatically eligible for the home improvement tax credit. The tax credit program had its own efficiency requirements, and while Energy Star certification was a starting point, many credits required products to meet Energy Star’s “Most Efficient” designation or other higher-tier standards. The official Energy Star federal tax credits page lists thresholds by product type.
For windows and skylights, products had to meet Energy Star Most Efficient criteria. Standard Energy Star windows did not qualify. For heating and cooling equipment, the requirements varied by product type, but most had to meet the highest efficiency tier defined by the CEE or achieve specific efficiency ratings tied to Energy Star certification.
Manufacturers were required to provide certification statements confirming that their products met the tax credit requirements. Homeowners were encouraged to obtain this certification at the time of purchase, since it was typically available on the manufacturer’s website or included with product documentation. Keep this certification with your tax records, as you may need it to substantiate a credit claimed in a prior year if your return is audited.
How to Claim Home Improvement Tax Credits on Your Tax Return
Claiming the home improvement tax credit requires filing IRS Form 5695, Residential Energy Credits, with your annual tax return for the year the qualifying property was placed in service. The process is straightforward, but accurate record-keeping makes it much easier. The IRS provides current form information on its About Form 5695 page.
Start by gathering your documentation for each qualifying improvement: receipts showing the product purchased and the amount paid, manufacturer certification statements confirming the product met the relevant efficiency standards, and records of the installation date. For the Energy Efficient Home Improvement Credit, the credit is claimed for the tax year in which the improvement was placed in service, not when you purchased it or when you paid for it. Because of the termination, only property placed in service on or before December 31, 2025 is eligible.
On Form 5695, Part II covers the Energy Efficient Home Improvement Credit (Section 25C). You list your qualifying expenses by category, and the form calculates the applicable credit amounts. The total credit is then transferred to your Form 1040.
A few things to keep in mind: these credits are nonrefundable, meaning they can reduce your tax liability to zero but cannot generate a refund. If your credit exceeded your tax liability, the excess was lost, and it did not carry forward to future years. Because the credit has now expired for property placed in service after 2025, planning new work around the annual caps no longer applies, although prior-year claims remain valid on properly filed returns.
Working with a qualified tax advisor is wise, especially if you claimed multiple upgrades or combined Section 25C credits with Section 25D clean energy credits for solar panels or battery storage on past returns. The tax advisory team at Pease Bell can help you confirm prior-year filings and evaluate what other incentives may still be available.
Planning Around the Credit’s Expiration
The biggest planning point is timing. The One, Big, Beautiful Bill Act ended the Section 25C credit for any property placed in service after December 31, 2025. Homeowners who completed qualifying installations in 2023, 2024, or 2025 can still claim the credit on the return for the year the property was placed in service, subject to the usual rules for amending past returns.
Because the annual caps reset each calendar year while the credit was active, some homeowners spread upgrades across tax years. For example, installing a heat pump in one year (up to a $2,000 credit) and upgrading insulation and windows the next (up to a $1,200 building envelope credit) could yield up to $3,200 in combined credits rather than being limited by a single year. That strategy applied only through the 2025 placed-in-service deadline.
If you are planning energy-efficient work now, look beyond the expired federal credit. Many states, municipalities, and utilities continue to offer rebates and incentives for insulation, heat pumps, and other efficiency upgrades. A professional home energy audit can still identify which improvements will deliver the greatest energy savings for your specific home, even if the $150 federal audit credit is no longer available for new work.
Finally, keep organized records for any year in which you claimed the credit. Create a folder for each tax year containing receipts, manufacturer certifications, contractor invoices, and before-and-after photos of the work. This documentation protects you in case of an audit and supports any amended returns.
Frequently Asked Questions
What home improvements qualified for tax credits?
Qualifying improvements included insulation and air sealing, exterior windows, skylights, exterior doors, heat pumps, heat pump water heaters, central air conditioners, furnaces, boilers, biomass stoves and boilers, certain electric panel upgrades, and home energy audits. All products had to meet specific efficiency standards, and the improvements had to be made to your primary residence.
How much could you save with home improvement tax credits?
Homeowners could claim up to $3,200 per year in combined credits: up to $1,200 for building envelope improvements and qualifying equipment like central air conditioners, furnaces, and boilers, plus up to $2,000 for heat pumps, heat pump water heaters, and biomass stoves and boilers. The credit applied to property placed in service from 2023 through December 31, 2025.
Is the Energy Efficient Home Improvement Credit still available in 2026?
No. The One, Big, Beautiful Bill Act, signed July 4, 2025, accelerated the expiration of the Section 25C credit. The IRS states the credit is not allowed for any property placed in service after December 31, 2025. Qualifying work completed on or before that date can still be claimed on the return for the year it was placed in service.
Do Energy Star products automatically qualify for the tax credit?
No. While Energy Star certification was a baseline, many tax credits required products to meet the Energy Star Most Efficient designation or other higher efficiency standards. Always check the manufacturer’s tax credit certification statement to confirm eligibility for any year you claim the credit.
Could you claim the insulation tax credit?
Yes, for qualifying insulation placed in service through December 31, 2025. Homeowners could claim 30% of the cost of qualifying insulation and air-sealing materials, up to a $1,200 annual cap shared with other building envelope improvements. The insulation had to meet International Energy Conservation Code (IECC) standards for the relevant period.
Were rental properties eligible for home improvement tax credits?
No. The Energy Efficient Home Improvement Credit (Section 25C) applied only to your principal residence, the home where you live for the majority of the year. Rental properties, second homes, and vacation properties were not eligible for this credit, although other incentives may be available through state or utility programs.
