Seal and insulate your way to savings!

Air sealing, insulation, duct sealing and window rebates require a program approved contractor. View a complete list of contractors using our Find a Contractor tool!

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Air Sealing - $500 per home

Additional qualifications

Air Sealing work must be performed by a program approved contractor to be eligible for a rebate.
The total rebate for air sealing is limited to $500 per household
A minimum of 200 CFM reduction must be achieved to qualify for the rebate
Use Find a Contractor to view a complete list of approved contractors near you. Be sure to enter your zip code and select Air sealing and insulation in the Equipment/Improvement dropdown.

Attic Insulation - $400 per home

Additional qualifications

Attic insulation projects are only eligible after air sealing has been completed
Existing insulation R-value must be R20 or less
Installation must result in a final R-value of R49 or greater
If the attic contains vermiculite/perlite insulation, consultation with a properly trained and certified individual is recommended before any insulation work is done
Pre and post pictures of the attic, including R stick, must be submitted with each application
The total rebate for attic insulation is limited to $400 per household
Use Find a Contractor to view a complete list of approved contractors near you. Be sure to enter your zip code and select Air sealing and insulation in the Equipment/Improvement dropdown.

Wall Insulation - $150 - $350 per home

Exterior Wall Insulation - $150 per home

Additional qualifications

Exterior wall insulation projects are only eligible after air sealing has been completed.
Existing insulation R-value must be R5 or less.
Wall Insulation work must be performed by an approved contractor to be eligible for a rebate.
Pre and post pictures of wall insulation must be submitted with each application
Use Find a Contractor to view a complete list of approved contractors near you. Be sure to enter your zip code and select Air sealing and insulation in the Equipment/Improvement dropdown.

Foundation Sidewall Insulation - $200 per home

Additional qualifications

Foundation sidewall insulation projects are only eligible after air sealing has been completed.
Existing insulation R-value must be R5 or less.
Wall Insulation work must be performed by an approved contractor to be eligible for a rebate.
Pre and post pictures of wall insulation must be submitted with each application
Use Find a Contractor to view a complete list of approved contractors near you. Be sure to enter your zip code and select Air sealing and insulation in the Equipment/Improvement dropdown.

Duct Sealing - $600 per home

Additional qualifications

Eligible duct systems are located in unconditioned an/or semi-conditioned spaces (unfinished spaces not directly heated) in the home.
Duct Sealing work must be performed by an approved contractor to be eligible for a rebate.
Pre and post pictures of ducts must be submitted with each application
Use Find a Contractor to view a complete list of approved contractors near you. Be sure to enter your zip code and select Duct sealing in the Equipment/Improvement dropdown.

Low Emissivity (Low-e) Storm Window Inserts - $100 per window, up to $1,000

Additional qualifications

Existing windows can be either single-pane or double-pane with clear glass and frame can be either metal, vinyl or wood.
Pre- and post-installation pictures of windows must be submitted with each application.
Insert must be ENERGY STAR certified and meet the ENERGY STAR storm window key product criteria (emissivity ≤0.22 and solar transmission >0.55 in Rockford, Chicago and Springfield climate zones).
Each home will be eligible for up to 10 windows, for a maximum rebate amount of $1,000.
Installation of low-e windows must be performed by an approved contractor to be eligible for a rebate.
Use Find a Contractor to view a complete list of approved contractors near you. Be sure to enter your zip code and select Air sealing and insulation in the Equipment/Improvement dropdown.

High Performance Windows - $100 - $125 per window, up to $3,000

Additional qualifications

High performance windows can replace any existing single or double pane window in a residential home with natural gas heating
Windows must be ENERGY STAR certified for the climate zone where they are being installed. Find more information here: https://www.energystar.gov/products/building_products/residential_windows_doors_and_skylights/climate_zone/search
If project also includes air sealing, air sealing, including test-out, must be completed before windows are installed
Pre and post pictures of window replacements are required to be submitted with each application
An invoice is required to be submitted with each application, containing 1) the make, model, and number of windows installed by size (width x height), 2) the full project cost, 3) a line item showing the rebate was deducted from the total project’s cost and not charged to the customer, 4) a customer signature
Windows that are 8 square feet or greater are eligible
Each home will be eligible for up to $3,000 in high performance window rebates
Installation of windows must be performed by an approved contractor to be eligible for a rebate.
Use Find a Contractor to view a complete list of approved contractors near you. Be sure to enter your zip code and select Air sealing and insulation in the Equipment/Improvement dropdown.