Illinois Insulation Rebates
What ComEd Rebates covers for attic, wall, and basement insulation in Illinois — and why insulation is typically the best first upgrade before a heat pump.
What insulation rebates are available in Illinois?
Illinois homeowners can access insulation rebates through ComEd Rebates for attic, wall, basement, and crawlspace insulation. Typical coverage: $150–$500. Air sealing is often done at the same time, with typical coverage: $400–$500. A no-cost home energy assessment is generally required first. Work must be performed by a program-approved contractor.
Amounts are estimates. Verify with your utility or ComEd Rebates before assuming eligibility.
Why insulation should come first in Illinois
What ComEd Rebates typically covers in Illinois
| Measure | Typical coverage | Notes |
|---|---|---|
| Attic insulation | $150–$500 | Most commonly covered first |
| Basement / crawlspace insulation | $150–$500 | Often included with attic work |
| Wall insulation (dense-pack) | $150–$500 | Where applicable, verify with contractor |
| Knee walls / rim joists | $150–$500 | Part of whole-home weatherization |
| Air sealing | $400–$500 | Typically done alongside insulation |
What to confirm before scheduling insulation work
What insulation rebates are available in Illinois?
Illinois homeowners can access insulation rebates through ComEd Rebates (ComEd, Ameren Illinois, Nicor Gas, Peoples Gas, North Shore Gas). Insulation rebates are up to $500. Air sealing rebates are up to $500. Rebates typically cover attic insulation to R-49 or higher, basement wall insulation, and sometimes floor/crawlspace insulation. A home energy assessment is usually required first. Exact amounts depend on your utility and current program rules.
How much insulation do I need to qualify for the Illinois rebate?
Most Illinois insulation rebate programs through ComEd Rebates require adding insulation to bring your home up to current code standards (typically R-38 to R-60 in the attic depending on climate zone). If your existing insulation is already at R-38 or higher, you may not qualify for the attic insulation rebate. A home energy assessment through ComEd Rebates will confirm exactly what improvements qualify in your home.
Does Illinois require insulation before a heat pump rebate?
Many Illinois heat pump rebate programs through ComEd Rebates recommend or require weatherization (including insulation and air sealing) before approving a whole-home heat pump rebate. This is not a penalty — a well-insulated home needs a smaller heat pump system, has lower operating costs, and qualifies for the full rebate tier. Check with ComEd, Ameren Illinois, Nicor Gas, Peoples Gas, North Shore Gas for current requirements specific to your upgrade path.
Can I combine the Illinois insulation rebate with the federal tax credit?
Yes. The federal 25C Energy Efficient Home Improvement Credit covers 30% of insulation and air sealing costs up to $1,200 per year — completely separate from ComEd Rebates utility rebates. Stack both: apply for the ComEd Rebates rebate after installation, and claim the 25C credit on your tax return for the same year. Note: the 25C credit for insulation requires the insulation to primarily reduce heat loss/gain (decorative materials don't qualify).