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Energy Efficient Home Improvement Credit — Up to $3,200 Per Year in Federal Tax Credits

Difficulty Easy Risk Low Applies To All (federal credit under IRC § 25C; also separate § 25D solar/battery credit) Potential Savings Up to $3,200 per year in federal tax credits; additional state rebates often available Last Verified 2026-01-01

Energy Efficient Home Improvement Credit — Up to $3,200 Per Year in Federal Tax Credits

What Is It?

The Energy Efficient Home Improvement Credit (IRC § 25C), dramatically expanded by the Inflation Reduction Act of 2022, gives homeowners a federal tax credit of 30% of the cost of qualifying energy-efficient home improvements — with an annual cap of $3,200 per year. Unlike a one-time credit, this cap resets every year, meaning you can claim up to $3,200 per tax year indefinitely as long as qualifying improvements are made.

This is a nonrefundable credit, meaning it reduces your tax liability dollar-for-dollar but cannot produce a refund if it exceeds what you owe. Unused credit cannot be carried forward to a future year — so timing your projects to years when you have sufficient tax liability matters.

What Qualifies and How Much

Heat pumps and heat pump water heaters — 30% of cost, up to $2,000/year (separate sub-cap)

  • Includes air-source heat pumps, geothermal heat pumps, and heat pump water heaters
  • Must meet efficiency standards set by the Consortium for Energy Efficiency (CEE) or ENERGY STAR

Insulation and air sealing — 30% of cost, up to $1,200/year (shares the general sub-cap)

  • Bulk insulation materials (batts, rolls, blown-in)
  • Air sealing materials

Exterior windows and skylights — 30% of cost, up to $600/year (within the $1,200 sub-cap)

  • Must be ENERGY STAR certified for your climate zone

Exterior doors — 30% of cost, up to $250 per door / $500 total (within the $1,200 sub-cap)

  • Must meet applicable ENERGY STAR requirements

Central air conditioning — 30% of cost, up to $600/year (within the $1,200 sub-cap)

  • Must meet efficiency standards (SEER2 ≥ 16 or higher depending on product type)

Electrical panel upgrades — 30% of cost, up to $600/year (within the $1,200 sub-cap)

  • Must be at least 200-amp service and installed in connection with another qualifying improvement

Home energy audit — 30% of cost, up to $150/year

  • Must be performed by a certified auditor; you receive a written report identifying the most significant energy improvements

Annual caps summary:

  • Heat pumps / heat pump water heaters: up to $2,000
  • Everything else combined (insulation, windows, doors, AC, panel, audit): up to $1,200
  • Total maximum per year: $3,200

Separate: Solar and Battery Credits (§ 25D)

The Residential Clean Energy Credit (§ 25D) is a separate, uncapped 30% credit for:

  • Solar panels (photovoltaic systems)
  • Solar water heaters
  • Small wind turbines
  • Geothermal heat pumps (also eligible under § 25D)
  • Battery storage systems (≥ 3 kWh capacity), even without solar

The § 25D credit is refundable in the sense that unused credit can be carried forward to future years (unlike § 25C). There is no annual dollar cap — 30% of the full system cost is credited.

How to Claim It

  1. Keep your receipts and product documentation. You need the purchase price and proof that the product meets the applicable efficiency standards. Many products list their § 25C eligibility on the packaging or manufacturer’s website.
  2. File Form 5695 (Residential Energy Credits) with your federal tax return. Your tax software will generate this automatically if you enter the qualifying expenses.
  3. Check for state rebates and utility programs. Many states and utilities offer additional rebates (sometimes cash, not just credits) for the same improvements. The IRA also funded the HOMES rebate program administered through states, which can provide up to $8,000 for whole-home energy upgrades.

What Most People Don’t Know

  • The annual cap resets each year. This is the key strategic insight: don’t cram everything into one year. Spreading a heat pump ($2,000 credit) into one year and windows/insulation ($1,200 credit) into the next year captures the full $3,200 cap twice. Doing both in one year still caps you at $3,200 total.
  • Labor costs are included for most categories. The credit applies to the total installed cost — including labor — for heat pumps, heat pump water heaters, and central air conditioners. For insulation and windows, only the product cost (not labor) qualifies.
  • Products must meet specific efficiency standards. Not every ENERGY STAR product qualifies — look for the specific efficiency tiers required for § 25C. The ENERGY STAR website has a product search tool that shows § 25C eligibility.
  • Renters do not qualify. The credit requires that you own the home where improvements are installed and that it is your principal or secondary residence (not a rental property you own).
  • The credit does not reduce your basis. Unlike some business credits, the § 25C credit does not require you to reduce your home’s cost basis by the credit amount — which means it doesn’t affect your § 121 home sale exclusion calculation.
  • 26 U.S.C. § 25C — Energy Efficient Home Improvement Credit (as amended by the Inflation Reduction Act of 2022, P.L. 117-169)
  • 26 U.S.C. § 25D — Residential Clean Energy Credit
  • IRS Notice 2023-29 — Guidance on energy community bonus credits
  • IRS Form 5695 Instructions — Authoritative guidance on what qualifies and how to calculate

Frequently Asked Questions

I replaced my windows this year for $8,000. How much is my credit?

30% × $8,000 = $2,400 — but the window sub-cap is $600, so your credit is capped at $600. You can only claim $600 for windows regardless of total cost. If you also installed insulation in the same year, that insulation cost (up to $4,000 to reach the remaining $1,200 sub-cap balance of $600) could add another $600, for a total of $1,200 from the general sub-cap category.

I installed a heat pump this year for $15,000. What is my credit?

30% × $15,000 = $4,500 — but the heat pump sub-cap is $2,000, so your credit is capped at $2,000. Even if you have other eligible improvements in the same year, the heat pump uses its own separate $2,000 sub-cap, and the remaining $1,200 general sub-cap is still available for other improvements.

My tax liability this year is only $800. Can I carry the unused credit to next year?

No — § 25C credits are nonrefundable and cannot be carried forward. You can only use up to the amount of your tax liability in the year the improvement is made. If your liability is $800, your credit is effectively $800 regardless of what you spent. Consider timing large projects to years when you expect a higher tax liability (e.g., a year you convert a traditional IRA to a Roth, sell appreciated assets, or have other income spikes).

Does the credit apply to rental properties I own?

No. Section 25C only applies to your own primary or secondary residence. Energy improvements to rental properties may be deductible as business expenses or depreciated under different rules (MACRS), but they do not qualify for the § 25C credit.

Are the state HOMES rebates taxable income?

Generally yes — rebates received from state HOMES rebate programs are typically treated as taxable income unless they qualify for an exclusion. The IRS is still providing guidance on the tax treatment of IRA-funded rebates; check IRS.gov for the latest guidance before filing.

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