Illinois Home Weatherization Assistance Program

The Illinois Home Weatherization Assistance Program is designed to help income-eligible Will County residents save fuel and energy while increasing the comfort of their homes. Assistance is available to both homeowners and renters, and can be applied to single-family residents, multi-unit buildings, mobile homes, and townhouses and condos (within association guidelines).

An assessor will conduct an energy audit on approved residences to determine what measures will make the home more comfortable and energy-efficient. Once the assessment is complete, a contractor will be assigned to apply the appropriate measures. One of our staff will then assess the work to make sure each measure called for has been completed.
We work with all types of homes!

The program evaluates:

  • Heating system: furnace will be tested and repaired or replaced if necessary
  • Insulation of exterior walls and attic areas
  • Weather-stripping of doors, or replacement if needed
  • Caulking of windows; repair or replace if needed
  • Sealing of other bypasses that allow heated or cooled air to escape from the home
  • Other energy conservation measures as funding allows, such as replacement of old refrigerators with new energy efficient models

Material and labor are free of charge to qualified homeowners. In order to provide services to leased homes or apartments, the landlord must agree to authorize work on the property and are responsible for 50% of mechanical costs when applicable.


Applications are taken on a first come / first served basis Monday through Friday from 8:00 am to 3:00 pm at our Joliet office. Please refer to our outreach calendar for information on locations and dates if you live in outlying areas of the county.

Please bring the following information when applying:

  • Social Security cards for all household members
  • Gross income for 90 days prior to date of application for every household member 18 years of age or older
  • Most recent gas and electric bills
  • Proof of ownership (deed, tax bill, mortgage statement or title, copy of current lease if renting)
  • Landlords will be contacted to provide a copy of property deed as proof of ownership
  • Other documents may be requested at time of application

Please fill out and submit a request form or call the Weatherization Information Line at (815) 722-0722 ext. 451 to request further information.

We will respond to your inquiry within one business day.

Weatherization Works!

—For Families
—For Communities
—For the Nation!

Weatherization Program Mission:

  • Reduce energy bills
  • Improve health and safety
  • Improve air quality in the home

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