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Wisconsin · checked October 21, 2026
Insulation and air sealing rebates in Wisconsin
1 program pays toward insulation and air sealing in Wisconsin right now, with 6 separate offers between them. The largest stated amount is $1,475, from Focus on Energy insulation and air sealing rebates (ENERGY STAR air sealing, below 80% AMI). The federal 25C credit for this upgrade ended on December 31, 2025, so the state and utility money below is what is left.
What Wisconsin pays for insulation and air sealing
Focus on Energy insulation and air sealing rebates Open
Run by Focus on Energy (Wisconsin utilities) · for customers of 1 utility · apply by January 31, 2027
- ENERGY STAR air sealing, above 150% AMI: $850 (with Trade Ally attic or wall insulation)
- ENERGY STAR air sealing, 80–150% AMI: $1,160 moderate income
- ENERGY STAR air sealing, below 80% AMI: $1,475 low income
- Attic insulation, above 150% AMI: $650
- Attic insulation, 80–150% AMI: $750 moderate income
- Attic insulation, below 80% AMI: $850 low income
Conditions on the program page: Single-family homes of 1–3 units, for improvements made on or after January 1, 2026; Installed by a Focus on Energy Trade Ally; air sealing needs an energy assessment and Trade Ally attic or wall insulation; At least 51% of the home's heating from a participating utility; “Homes heated with wood, oil, or LP are not eligible”; new construction not eligible; No rebate for the same insulation category within the past three years; Capped at 100% of project costs; apply within 60 days, no later than January 31, 2027.
Also on the page: Wall insulation $575 at every income level; foundation and sill insulation $90 / $120 / $150; duct sealing in unconditioned space $1,000; DIY attic insulation and air sealing $200; Energy assessments by Trade Allies typically cost $500–$700, according to the page.
Source: Focus on Energy: Insulation & air sealing rebates. Last checked October 21, 2026. Official program page.
Worked example: one Wisconsin home
Take 1,000 square feet of attic insulation across 2 large zones, on a project that costs $5,000, in a home heated with natural gas. These are example inputs, not typical prices. Each program's own rule gives the amounts below; where one program has several tiers only the largest one counts, separate programs add up, and a percentage offer with no cost entered is shown at its ceiling.
| Utility | Not income-qualified | Moderate income | Low income |
|---|---|---|---|
| Utility participating in Focus on Energy | $1,500 | $1,910 | $2,325 |
For a household that is not income-qualified, the example comes to $1,500, made of $850 from Focus on Energy insulation (ENERGY STAR air sealing, above 150% AMI) plus $650 from Focus on Energy insulation (Attic insulation, above 150% AMI). A household that meets a program's low-income definition gets $825 more in the same example, because 2 offers are paid at the income-qualified level.
Who can use these Wisconsin offers
Every household in Wisconsin covered by Focus on Energy can apply; the offers are not limited to one utility's territory. No end date is listed, but the latest application deadline is January 31, 2027.
Federal credit and state IRA rebates
The Energy Efficient Home Improvement Credit (IRC §25C) paid 30% of insulation and air-sealing materials, within the $1,200 annual limit (labor not included). The IRS page says: “can claim the credit for improvements made through December 31, 2025.” Not allowed for property placed in service after December 31, 2025. Source: IRS: Energy Efficient Home Improvement Credit, 26 U.S.C. §25C, as amended by Public Law 119-21 (July 4, 2025). See what the credit covered and when it ended.
Wisconsin IRA Home Energy Rebates (HOMES and HEAR): Open. Focus on Energy says both programs “are NOW AVAILABLE”. HEAR is for households at or below 150% of area median income and covers heat pumps, insulation and air sealing, and “upgraded electrical panels and wiring”; the page publishes no dollar amounts, so none are shown here. Source: Focus on Energy: IRA Home Energy Rebates.
How Wisconsin compares
7 of the other 14 covered states list a larger top amount for insulation and air sealing. Open elsewhere: Connecticut $10,000; Maine $8,600; Vermont $7,000; New Hampshire $6,000; Massachusetts $5,000; North Carolina $1,600; Oregon $1,500; Arizona $600. No open, sourced offer is listed in 6 other covered states (California, Florida, Michigan, Pennsylvania, Rhode Island, Texas). Compare them on the insulation and air sealing rebates by state page.
Other upgrades in Wisconsin: air-source heat pump, heat pump water heater. Background: how rebates stack and the federal credit status.
Rebates are set by each program and can change or close without notice; the program's own page and application decide what is paid. This page is information, not tax, legal or financial advice. Amounts last checked October 21, 2026.