The federal 25C credit for insulation and air sealing ended for work completed after December 31, 2025. Utility programs and income-qualified Home Energy Rebates still cover part of the cost in many places.*
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The 2025 tax law ended the 25C credit, which covered 30% of insulation and air sealing costs up to $1,200 a year. Utility programs and state-run Home Energy Rebates are now the main sources of help.
Usually, especially in older homes. Attic insulation and air sealing are among the cheapest upgrades per dollar saved, and they help a heat pump or new AC work better. Your report flags homes likely to have weak insulation based on their age and size.
Many utility insulation programs require an assessment first, and some offer it free. It also shows where your biggest air leaks are before you spend money.
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"The neighbor comparison was eye-opening — I was using 34% more electricity than similar houses. The insulation upgrade pays for itself in under two years."
No. The 25C credit ended for insulation and air sealing completed after December 31, 2025. Work completed in 2025 can still be claimed on your 2025 return.
Utility programs, which vary by provider, and income-qualified Home Energy Rebates of up to $1,600 where your state's program is open.
Many utility programs require an assessment before they pay a rebate. It is also the best way to find where your home loses the most heat.
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