Illinois Weatherization Assistance Program (IWAP)

Illinois Department of Commerce & Economic Opportunity

Available Weatherization

About This Program

Federally funded program providing free home energy efficiency improvements including insulation, air sealing, furnace repair/replacement, and more. Services available to renters and homeowners at or below 200% of federal poverty level.

Full cost of approved weatherization measures covered at no charge

Verified against Illinois Department of Commerce & Economic Opportunity's official page on 2026-06-17.

Data last verified 2026-06-09. How we verify our data.

Key Details

  • Free weatherization services for qualifying households
  • Income at or below 200% federal poverty level
  • Includes insulation, air sealing, furnace work
  • Available to both homeowners and renters
  • Energy audit performed before work begins

How to Apply

Get free help applying Visit Official Program Page Track this program

(800) 252-8643

A grant-savvy contractor in Western Springs, IL can handle the paperwork, inspections, and timelines so your funding releases on schedule. Getting matched is free.

You will likely need a contractor to apply

Projects like this almost always need a licensed contractor, and many grants ask for a written estimate as part of your application. Lining up a contractor in Western Springs early keeps your application moving.

Get matched with a contractor

Each program sets its own contractor rules. Check the official program page for exact requirements.

Your application paperwork

Documents you will likely need

  • Proof you own and live in the home (deed, recent mortgage statement, or property tax bill).
  • A government-issued photo ID for every owner on title.
  • Household income proof (recent pay stubs, last year's tax return, or benefit award letters for everyone in the home).
  • Proof of age (driver's license or birth certificate) if the program is age-based.
  • A written estimate from a licensed contractor for the work (many programs require this to apply).
  • A recent utility bill for the home (energy and weatherization programs use it to confirm service and usage).
  • Photos of the problem area or the work to be done.
  • The program's own application form, completed (use the official link or phone number on this page).
Download this checklist (PDF)

Requirements vary by program and locality. Confirm the exact rules on the official program page. We can help you prepare your paperwork, but you submit it yourself.

Deadline: Year-round rolling applications

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