ExpiredLast verified: 2026-07-19

Section 25C Energy Efficient Home Improvement Credit (Expired)

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Was 30% of costs, up to $3,200/year
Provider
Internal Revenue Service (IRS) / U.S. Federal Government

The Section 25C Energy Efficient Home Improvement Credit provided a 30% federal tax credit for qualifying energy-efficient home improvements, with a general annual limit of $1,200 and a separate $2,000 limit for heat pumps and biomass stoves. Originally extended through 2032 under the Inflation Reduction Act, the credit was terminated early — expiring December 31, 2025 — when the One Big Beautiful Bill Act moved the sunset date forward. While 25C is no longer available for new installations, homeowners who completed qualifying work before the expiration can still claim it on their 2025 tax return. Active alternatives include SMUD rebates (up to $3,000 for heat pumps), PG&E rebates, and the still-active Section 30C EV charger credit.

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Eligibility Requirements

  • EXPIRED — No longer available for installations after December 31, 2025
  • Was available to U.S. taxpayers who owned the home where improvements were made
  • Improvements must have been placed in service by December 31, 2025
  • Equipment must have met ENERGY STAR Most Efficient or specific CEE tier requirements
  • Credit was claimed on annual tax return using IRS Form 5695
  • Was a nonrefundable credit — could only reduce tax owed to $0, not generate a refund
  • If you completed work before 12/31/2025, you can STILL claim on your 2025 tax return (due April 2026)

How to Apply

  1. 1If you completed qualifying work BEFORE December 31, 2025, you can still claim the credit
  2. 2Gather receipts, Manufacturer Certification Statements, and proof of installation dates
  3. 3File IRS Form 5695 (Residential Energy Credits) with your 2025 tax return
  4. 4Part II of Form 5695 covers the 25C credit — enter qualifying expenditures by category
  5. 5Credit is nonrefundable — reduces your tax liability but cannot generate a refund
  6. 6For NEW projects in 2026+, use active alternatives: SMUD rebates ($3,000), PG&E rebates ($2,500), or Section 30C for EV chargers

Qualifying Equipment & Services

  • Heat pumps (HVAC) — was $2,000 annual limit under heat pump sub-cap
  • Heat pump water heaters — was $2,000 annual limit
  • Biomass stoves and boilers — was $2,000 annual limit
  • Central air conditioning — was $600 per item under general $1,200 cap
  • Insulation and air sealing materials — was under general $1,200 cap
  • Energy-efficient windows ($600 cap) and doors ($250 each, $500 total)
  • Electrical panel upgrades for electrification — was $600 under general cap
  • Home energy audits — was $150 under general cap

Frequently Asked Questions

Is the 25C tax credit still available in 2026?+
No. The Section 25C Energy Efficient Home Improvement Credit expired on December 31, 2025. The One Big Beautiful Bill Act moved the expiration forward from 2032. However, if you completed qualifying work before the deadline, you can still claim the credit on your 2025 tax return filed in 2026.
Why did the 25C credit expire early?+
The Inflation Reduction Act originally extended 25C through 2032. However, the One Big Beautiful Bill Act (signed into law in 2025) moved the sunset date forward to December 31, 2025, ending the program 7 years early.
What replaced the 25C tax credit?+
There is no direct federal replacement. However, utility rebates from SMUD (up to $3,000 for heat pumps) and PG&E (up to $2,500) remain active and provide immediate savings without waiting for tax filing. The Section 30C EV charger credit also remains active through 2032.
Can I still claim 25C if I installed a heat pump in 2025?+
Yes! If your qualifying equipment was placed in service on or before December 31, 2025, you can still claim the credit on your 2025 tax return (due April 15, 2026, or October 15, 2026 with extension). File IRS Form 5695.
What are the best alternatives to 25C for Sacramento homeowners?+
SMUD customers: up to $3,000 heat pump HVAC rebate + $4,000 HPWH rebate + $2,000 panel upgrade. PG&E customers: up to $2,500 heat pump + $3,200 HPWH. Plus GoGreen financing at 2.99-5.99% APR. These often exceed what 25C provided.

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