Illinois Weatherization Assistance Program (WAP)

Illinois Department of Commerce & Economic Opportunity (DCEO)

Available Weatherization

About This Program

Federally-funded weatherization program administered by the State of Illinois to reduce energy costs for low-income households. Services include insulation, air sealing, heating system repair/replacement, and energy-efficient improvements at no cost to qualifying residents.

Average household receives $8,500 in weatherization services at no cost

Official program page checked live on 2026-06-17.

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

Key Details

  • Free weatherization services worth ~$8,500
  • Income at or below 60% state median required
  • Covers insulation, air sealing, HVAC improvements
  • Priority for seniors, families with children, disabled
  • No cost to qualifying households

How to Apply

Get free help applying Visit Official Program Page Track this program

(217) 785-6142

A grant-savvy contractor in Calumet City, 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 Calumet City 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

A free program that lowers your energy bills by improving your home's energy efficiency (insulation, air sealing, heating system repair or replacement). It is income qualified and run through local agencies, and the Illinois Department of Commerce and Economic Opportunity (DCEO) administers it in Illinois.

Steps to apply

  1. Find the local weatherization agency that serves your county (use the official page above, which lists providers, or call the number there).
  2. Apply through that local agency (some areas also offer an online application).
  3. The agency checks your household income eligibility.
  4. They do a home energy audit, then install the improvements at no cost to you.
Get the official form

Documents you will likely need

  • Proof of household income for everyone in the home (or proof you get SSI, LIHEAP, or other qualifying assistance).
  • Proof you own or rent the home.
  • A recent utility bill for the home.
  • Photo ID.
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: Applications accepted year-round

Questions about this program?

Ask us. It is free, and a real person answers within a business day.

Email us about this program

Need a Contractor for This Grant?

Grant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.

Get matched with a pro, free Browse Calumet City, IL contractors

Find More Programs in Calumet City, IL

This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.

See All Programs