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Weatherization program

Illinois Home Weatherization Assistance Program (IHWAP)

Administered by Illinois Department of Commerce and Economic Opportunity (DCEO), delivered through local administering agencies

Illinois' weatherization program helps income-eligible households reduce energy costs by improving the home's efficiency — for example insulation and heating-system work. Services are delivered at no cost to eligible households through local agencies: you apply through your local administering agency, not directly to the state.

Through a local organization

Funds are administered through participating local organizations — you apply to the local organization, not the funder.

Who runs it

Illinois Department of Commerce and Economic Opportunity (DCEO), delivered through local administering agencies — a state agency.DwellReady does not administer this program.

Where it's available

Statewide in Illinois, through local administering agencies that each serve their own county or region.

Major eligibility factors

Household income within the program’s limits (the local agency determines eligibility)
Open to homeowners; renters may qualify with property-owner approval
Your home is served by a local administering agency in Illinois

What it's for (per the official source)

Energy-efficiency improvements (for example insulation, air sealing, and heating-system work) that reduce energy costs.

What it's not for

Not a general home-modification or repair program — the local agency determines the work list for your home.

How much assistance

Weatherization services are delivered at no cost to income-eligible households — the local agency describes exactly what your home would receive.

When to apply

Applications are taken through local administering agencies — check your local agency for current timing.

Verify with the official source

Official program page

Official source: Illinois Department of Commerce and Economic Opportunity — "Home Weatherization" · DwellReady verified Sep 2026.DwellReady does not administer this program, and the administering organization makes all eligibility and funding decisions.

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