Illinois Department of Commerce & Economic Opportunity
Federally funded program administered by the state to provide free weatherization services including insulation, air sealing, furnace repair/replacement, and energy efficiency upgrades for income-qualified households. Priority given to seniors, people with disabilities, and families with children.
Average weatherization package covers comprehensive energy efficiency upgrades at no cost
Data last verified 2026-06-09. How we verify our data.
A grant-savvy contractor in Carol Stream, 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 Carol Stream early keeps your application moving.
Get matched with a contractorEach program sets its own contractor rules. Check the official program page for exact requirements.
Deadline: Rolling applications, subject to funding availability
Ask us. It is free, and a real person answers within a business day.
Email us about this programGrant-approved contractors understand the documentation, inspections, and timelines, so your funding releases on schedule.
Rebates and discounts that stack on top of any grant. Most are free to use.
This is just one of many grants, rebates, and free programs available. Stack them together to maximize your savings.
See All Programs