Energy-Efficient Windows in Illinois

The federal window tax credit (Section 25C) ended for windows installed after December 31, 2025, and ComEd does not currently list a rebate for residential windows. One local program does exist: the City of Naperville pays residential Naperville Electric customers $250 for each single-pane window they replace, up to $2,500 or 50% of the eligible cost, whichever is lower. Most Naperville addresses buy power from Naperville Electric, the city utility; Bolingbrook and Plainfield homes are on ComEd. The rules: only single-pane windows count, the new windows must be double- or triple-pane with a U-factor of 0.30 or lower, new construction does not qualify, you must contribute at least $5 a month for five years to the city's Renewable Energy Program, and you must complete the application within 120 days of installation. Rebate programs change every year, so ask us during your estimate and we will check what is available for your home.

DuPage and Will counties are in the ENERGY STAR Northern zone. Under the current Version 7 rules (in effect since October 23, 2023), a Northern-zone window needs a U-factor of 0.22 or lower with a solar heat gain coefficient (SHGC) of 0.17 or higher. Two trade-offs also qualify: a U-factor of 0.23 to 0.24 with SHGC 0.35 or higher, or a U-factor of 0.25 to 0.26 with SHGC 0.40 or higher. Air leakage must be 0.3 cfm per square foot or less. Patio doors that are more than half glass need a U-factor of 0.26 or lower and SHGC of 0.40 or lower.

It depends on the town and the job. Naperville's permit guide lists window replacement that changes the size or style, and new openings, as permit work, and it does not clearly exempt a same-size swap, so confirm your scope with the city. Bolingbrook requires permits for various renovations, so confirm with its Building Division. In Plainfield, ask the building department. Historic districts and HOAs can add their own approval. Our window and siding permit guide, linked below, covers each town.

ENERGY STAR estimates that replacing single-pane windows with ENERGY STAR certified windows saves about 11% on energy bills in the northern climate zone that covers Illinois. Your savings depend on your current windows, your home, and your heating costs, so we look at yours during the estimate.

Renovate Right 365 installs double and triple-pane ENERGY STAR certified windows in all standard styles: double-hung, casement, sliding, picture, and bay. We work with leading manufacturers to find the right fit for your home and budget.

Most whole-home window replacements take 1-3 days depending on the number of windows. Individual room replacements can often be done in a single day.

Renovate Right 365 installs ENERGY STAR certified windows with a typical 25-year warranty. Well-maintained double and triple-pane windows commonly perform at that level for decades in Illinois climate conditions.

Yes. Renovate Right 365 offers window installation in Chicago and the surrounding Chicago area, including Cook, DuPage, Will, and Kane counties. Chicago-area homes get the same in-home assessment, product selection, and professional installation as anywhere else in our Illinois service area.

Illinois homeowners typically pay $300 to $1,200 per window installed depending on size, frame material, and glass package, with a full 10-15 window replacement usually running $6,000 to $16,000. Your free in-home estimate gives you exact pricing based on your home's actual window count and condition.

The clearest signs are condensation or fog trapped between the panes, a noticeable draft near the frame even when the window is fully closed, frost forming on the inside of the glass in winter, and visible warping or cracking in the frame. Any of these mean the window's seal has likely failed and it's time to consider replacement.

Yes. Renovate Right 365 installs windows throughout the Chicago suburbs with dedicated coverage for Naperville, Bolingbrook, and Plainfield, alongside the rest of our Cook, DuPage, Will, and Kane County service area.