Federal credit: check the year
The IRS says the Energy Efficient Home Improvement Credit covers improvements made through December 31, 2025. Some older ENERGY STAR and manufacturer pages still describe it as current. Do not subtract it from a 2026 installation quote.
Utility and state programs are separate
Check your actual utility provider, service address, income rules, approved models, installer requirements and application deadlines. Funding, reservation requirements and whether offers can be combined vary by program.
Ask for two clear totals
Have the installer show the gross installed price and each potential incentive separately. Establish who applies, who receives the money and what happens if the application is declined.
Sources
Sources checked September 29, 2026. Prices, codes and rebates change. Check current details with your installer and local permit office.