Which home energy improvements earn a credit?

The status first: these credits have ended for new spending

Publication 530 (2025) lists the termination in its “What’s New” section. You can’t claim residential clean energy credits for expenditures made after December 31, 2025, and you can’t claim energy efficient home improvement credits for any property placed in service after December 31, 2025. The Instructions for Form 5695 (2025) repeat the same dates. So for work finished in 2026 or later these two credits are not available under the editions we read, and a person asking now is usually asking about a 2025 return or an amended earlier return. Check the current Form 5695 instructions for your tax year, because later legislation can change this. Both credits are claimed on Form 5695, Residential Energy Credits.

The residential clean energy credit

The Form 5695 instructions describe a credit of 30% of costs for qualified solar electric property, solar water heating property, small wind energy property, geothermal heat pump property, battery storage technology, and fuel cell property. Labor costs for onsite preparation, assembly or original installation, and for piping or wiring to interconnect the property to the home, are included. Battery storage must have a capacity of at least 3 kilowatt hours. The fuel cell credit is limited to $500 for each one-half kilowatt of capacity and applies to the main home. The credit is available for existing homes and homes being constructed, it applies to a home in the United States that you used as a residence, and the tax year’s unused amount can be carried forward to 2026 on Form 5695. Costs for a swimming pool, hot tub or other energy storage medium with a function other than storage do not qualify.

The energy efficient home improvement credit

This credit equals 30% of the sum of the amount paid for qualified energy efficiency improvements installed in 2025, residential energy property costs, and home energy audits, subject to limits. It applies only to existing homes and, for improvements, to your main home. The instructions state the limits: a total combined credit limit of $1,200 for qualified energy property; $600 for any qualified energy property item; a combined $600 for exterior windows and skylights; $250 for any exterior door and $500 for all exterior doors; $150 for home energy audits; and a separate combined $2,000 limit for heat pumps, heat pump water heaters, biomass stoves and biomass boilers. The older lifetime limit was replaced by an annual limit. Insulation and air sealing have a $1,200 limit by item, which in practice is the same as the overall cap.

What qualifies in each group

Qualified energy efficiency improvements are building envelope components: insulation and air sealing material or systems specifically and primarily designed to reduce heat loss or gain, exterior windows and skylights, and exterior doors. The original use must begin with you, the component must reasonably be expected to remain in use at least 5 years, and it must meet energy standards; onsite preparation, assembly or installation labor is not included for these. Residential energy property is certain electric or natural gas heat pump water heaters, electric or natural gas heat pumps, central air conditioners, natural gas, propane or oil water heaters, natural gas, propane or oil furnaces and hot water boilers, certain biomass stoves and boilers, and certain improvements or replacements of panelboards, subpanelboards, branch circuits or feeders. For 2025 installations, doors, windows and equipment need a valid qualified manufacturer identification number (QMID).

Home energy audits must be performed by, or under the supervision of, a Qualified Home Energy Auditor certified by a Qualified Certification Program, and you must keep a written report identifying the most significant and cost-effective improvements with estimated savings.

What disqualifies a cost

The instructions say subsidized energy financing cannot be used to figure the energy efficient home improvement credit, and if a public utility subsidy was not included in your gross income, you reduce your cost by that subsidy first. If less than 80% of the use of an item is for nonbusiness purposes, only the nonbusiness portion counts. If you live in a condominium or cooperative, you are treated as having paid your proportionate share of the association’s or corporation’s costs. Home energy credits also affect basis: Publication 530’s Table 3 says the basis increase from qualifying energy property is reduced by any credit taken, so a $1,200 credit lowers your adjusted basis by that amount.

Worked example with invented numbers

In 2025 you pay $3,000 for windows, $1,500 for three exterior doors ($500 each), $5,000 for a qualifying central air conditioner, $9,000 for a qualifying heat pump, and $600 for an audit meeting the rules. At 30%, the windows give $900 but are capped at $600; each door gives $150 (under the $250 limit), so $450 for three doors; the air conditioner gives $1,500 but is capped at $600; the audit gives $180, capped at $150. Those add to $600 + $450 + $600 + $150 = $1,800, which is limited to the $1,200 combined cap. The heat pump is separate: $2,700 at 30%, capped at $2,000. Total: $1,200 + $2,000 = $3,200. The calculator above reproduces this. The numbers are an illustration of the instruction limits, not an example from the IRS, and eligibility depends on meeting each product’s standards.

Where this leaves you

If your project was complete in 2025, gather the invoices, the manufacturer certifications and QMIDs, and the auditor’s report, and check the current Form 5695 instructions for line-by-line limits. If it was not complete by December 31, 2025, the credits do not apply to new spending under the editions read. Either way, remember the project may still be an improvement for basis purposes: see are home improvements deductible and what the cost basis of a home is.

Sources

• IRS Publication 530, Tax Information for Homeowners (2025): the “What’s New” and Table 3 entries, and the Instructions for Form 5695 (2025). Read November 2, 2026.
• Instructions for Form 5695 (2025), Residential Energy Credits: the “Who Can Take the Credits”, “Residential Clean Energy Credit (Part I)” and “Energy Efficient Home Improvement Credit (Part II)” sections. Read November 2, 2026.

Edition read: Publication 530 (2025), for use in preparing 2025 returns. Dollar limits, credits and rates in the publication are for 2025 and can change; check the current publication and the Schedule A instructions for your tax year. This page summarizes the publications and does not replace them. Marked for human review.