The federal Inflation Reduction Act of 2022 created the most substantial residential energy tax credits and rebates in American history. Most homeowners have heard the headlines but few have a clear sense of what they can actually claim, how to do so, and how the incentives stack with state and utility programs. The total available to a single household replacing an HVAC system in 2026 can run well into five figures.
The two federal programs
The Inflation Reduction Act established two distinct federal incentive structures for residential energy efficiency, and the distinction matters.
The 25C Tax Credit (Energy Efficient Home Improvement Credit)
This is a tax credit — a dollar-for-dollar reduction in federal income tax owed — available to virtually all homeowners regardless of income. It is non-refundable, meaning it can reduce a tax bill to zero but cannot generate a refund beyond taxes already paid.
For HVAC and weatherization, 25C provides 30 percent of qualifying equipment and installation costs, with these annual caps:
- Up to $2,000 for heat pumps, heat pump water heaters, and biomass stoves
- Up to $600 for central air conditioners
- Up to $600 for natural gas, propane, or oil furnaces and water heaters
- Up to $1,200 combined for insulation, air sealing, windows, doors, and home energy audits
- Up to $150 for a home energy audit
Importantly, the heat pump credit is in a separate "bucket" from the other improvements, so a homeowner installing a heat pump and adding insulation in the same year can claim up to $2,000 + $1,200 = $3,200.
The credit is claimed on IRS Form 5695. The equipment must meet the efficiency standards specified by the IRS (which generally track Energy Star tiers for the year of installation). Equipment must be installed by an eligible contractor and the homeowner must keep documentation including model numbers and installation records.
The IRA Home Energy Rebates (HEEHRA and HOMES)
These are rebate programs — up-front discounts at the point of sale or shortly after — that are income-limited and administered by state energy offices on different timelines.
The High-Efficiency Electric Home Rebate Act (HEEHRA) provides:
- Up to $8,000 for a heat pump
- Up to $1,750 for a heat pump water heater
- Up to $4,000 for an electrical panel upgrade tied to electrification
- Up to $2,500 for electrical wiring
- Up to $1,600 for insulation, air sealing, and ventilation
- Up to $14,000 total per household
For households earning less than 80 percent of area median income, the rebate covers 100 percent of project costs up to the caps. For households earning 80 to 150 percent of area median income, the rebate covers 50 percent. Households above 150 percent of area median income are not eligible.
The HOMES rebate program provides rebates based on the modeled or measured energy savings of a whole-home retrofit project, with payments scaling with the energy reduction achieved. Caps and rules vary somewhat by state.
HEEHRA and HOMES roll out on staggered timelines — states began implementing through 2024 and 2025, with most states operational in 2026. Your state energy office is the authoritative source for current status and application process.
State and utility programs
Most states offer additional incentives that stack on top of the federal programs. These vary widely:
- State income tax credits (for example, New York's residential energy tax credits)
- State-administered rebate programs separate from the federal IRA money
- Property tax exemptions for energy-efficient improvements
- Sales tax exemptions on qualifying equipment
Utility incentives are often the largest layer after the federal credits. Most investor-owned electric and gas utilities offer some combination of:
- Direct rebates for heat pump installation, often $500 to $4,000
- Rebates for smart thermostats
- Rebates for high-efficiency furnaces or AC units
- Free or subsidized home energy audits
- On-bill financing for qualifying retrofits
The DSIRE database (Database of State Incentives for Renewables and Efficiency, maintained by NC State) is the most comprehensive single source for state and utility programs. It is worth a search for your zip code before committing to any major HVAC purchase.
How to actually capture the incentives
The process differs by program, but several principles apply broadly.
For the 25C tax credit
Save the equipment manufacturer's certification statement (typically available on the manufacturer's website) and the itemized invoice from the installer. File IRS Form 5695 with your tax return for the year of installation. The credit applies to the year the equipment is placed in service, not the year of purchase, which can matter for late-December installations.
For HEEHRA rebates
These are typically applied as a discount at the point of sale by a participating contractor, who then is reimbursed by the state. Verify the contractor is enrolled in the state's program before signing. Some states require a pre-application and approval before work begins.
For utility rebates
Apply within the time window specified (often 60 to 180 days after installation). Most utilities require the manufacturer model number, AHRI certificate (a document that confirms the equipment's performance ratings as a matched system), and a copy of the installer's invoice.
A piece of advice that frequently surprises homeowners
The combined value of incentives is sometimes so large that the most efficient equipment is actually cheaper, net of incentives, than mid-tier equipment. Run the numbers both ways before defaulting to the contractor's standard recommendation. Higher SEER2 and HSPF ratings can swing thousands of dollars in available credits and rebates.
Where to verify current rules
The credits and rebates have been adjusted by IRS rulemaking and state implementation since 2022, and continued changes are possible. Authoritative sources:
- IRS Energy Efficient Home Improvement Credit page (for 25C)
- Energy Star Federal Tax Credit pages (for equipment qualifications)
- Your state energy office (for HEEHRA and HOMES)
- DSIRE (for state and utility incentives)
For more on whether a heat pump is the right choice in the first place, see Heat Pump or Gas Furnace. For the question of when an old system is actually ready to be replaced, see When to Replace HVAC Equipment.
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