Energy Efficient Home Improvement Credit (25C)

Internal Revenue Service

Closed Home Repair

About This Program

Note: Congress ended this federal tax credit for installations after December 31, 2025. Projects placed in service by that date can still be claimed on your 2025 federal return (IRS Form 5695).

30% tax credit up to $3,200/year for energy-efficient home improvements including heat pumps ($2,000 sub-limit), insulation, windows, doors, and water heaters. Expired December 31, 2025. Claim on 2025 tax returns for qualifying installations completed by that date.

EXPIRED for new installations after Dec 31, 2025; $2,000 sub-limit for heat pumps

Verified against Internal Revenue Service's official page on 2026-06-17.

Data last verified 2026-04-03. How we verify our data.

This is a national program. In Louisville, KY, you can stack it with local programs like these:

Key Details

  • EXPIRED for new installations after December 31, 2025
  • Was 30% of costs, up to $3,200/year total
  • $2,000 sub-limit for heat pumps, biomass stoves/boilers
  • $1,200 sub-limit for other improvements (windows, insulation, etc.)
  • Claim on 2025 tax return for qualifying 2025 installations

How to Apply

Get free help applying Visit Official Program Page Track this program

800-829-1040

A grant-savvy contractor in Louisville, KY can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.

You will likely need a contractor to apply

Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in Louisville early keeps your application moving.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

Documents you will likely need

  • Your federal tax return for the year of the work (this benefit is claimed on your taxes, not through a separate application).
  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • A written estimate from a licensed contractor for the work (many programs require this to apply).
  • A recent utility bill for the home (energy and weatherization programs use it to confirm service and usage).
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.

Deadline: Ended December 31, 2025 (federal law change)

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