Premier Window Installation in Chicago
Cut drafts, lower energy bills, and elevate your home with windows engineered for Chicago’s extremes.
Window Installation Built for Chicago Homes
Comfort and Efficiency, Sealed In
Old, drafty windows are one of the biggest sources of heat loss in a Chicago home — and one of the easiest upgrades to feel right away. At Pegasus Construction, we install energy-efficient replacement windows that seal out lake-effect cold, quiet busy streets, and refresh the look of your home inside and out. From original single-pane windows in century-old bungalows to modern picture windows, we measure, fit, and finish every opening for a tight, lasting seal.
Are Your Windows Costing You Comfort & Money?
- Drafts and cold spots near your windows every winter
- Heating and cooling bills climbing year after year
- Foggy or condensation between the panes (failed seals)
- Old single-pane windows in an older Chicago home
- Street and alley noise you can't keep out
- Painted-shut or hard-to-open windows that won't budge
Windows That Save Energy & Elevate Your Home
Your Window Project, Handled End to End
We handle your window project end to end — precise measurement, removal of the old units, and a clean, weather-tight installation with proper flashing and insulation. The result is a quieter, more comfortable home and noticeably lower energy bills.
As a full design-build contractor, we can pair new windows with siding, trim, and exterior work for a seamless, finished look — all managed by one accountable team that knows Chicago’s codes and older-home quirks.
Styles & Glass Built for the Midwest
We install and help you choose the window styles and glass packages that perform best in Chicago’s climate.
Double-Hung & Casement
Classic double-hung, casement, sliding, bay, and picture windows to match any Chicago home — easy to operate and easy to clean.
Energy-Efficient Glass
Double- and triple-pane, Low-E, argon-filled, ENERGY STAR glass packages that hold heat in winter and block summer sun.
Historic-Match & Specialty
Profiles and finishes that respect the character of bungalows, greystones, and vintage two-flats while delivering modern performance.
Windows Built for Chicago's Homes & Neighborhoods
We Know Chicago's Older Windows
Much of Chicago’s housing stock — bungalows across the Bungalow Belt in Portage Park and Jefferson Park, greystones and two-flats in Logan Square and Humboldt Park, frame homes in Old Irving Park — still has original or aging windows that leak heat and money. We specialize in replacing them with efficient, properly fitted units that suit each home’s era and style.
Built for Chicago Winters
With polar-vortex cold, lake-effect wind, and humid summers, Chicago punishes inefficient windows. Our double- and triple-pane, Low-E installations dramatically reduce drafts and heat transfer — keeping your home comfortable and trimming utility bills through every season.
Permits & Chicago Building Code
We manage permitting with the Chicago Department of Buildings and understand the added requirements in landmark and historic districts, where window replacements can carry specific guidelines. We keep your project compliant and on track.
Neighborhoods We Serve
From Lincoln Park, Lakeview, and Roscoe Village to Bucktown, Wicker Park, and Ukrainian Village — plus suburbs like Oak Park, Evanston, Skokie, Park Ridge, and Niles — Pegasus Construction is the window installer Chicago homeowners trust.
Years Serving Chicago
Projects Completed
15 Google Reviews
Licensed, Bonded & Insured
Our Simple Three-Step Plan
Schedule an Initial Call
Tell us about your home and which windows are giving you trouble. We’ll review options that fit your budget and timeline.
In-Home Consultation
A window professional measures your openings and reviews styles, glass packages, and finishes with you on site.
Design & Install
We finalize the plan, handle permits, and install your new windows with a clean, weather-tight finish.
Explore Our Other Exterior Services
Affordable Window Installation, Flexible Payments
Low rates and friendly loan consultants make your project easier on the budget. We offer financing to help you get started sooner.
Servicing Chicago and the Surrounding Suburbs
Chicago Neighborhoods
Surrounding Suburbs
Our team of experienced builders has a solid track record when it comes to creating exceptional spaces. We ensure that the construction process is stress free, with transparent communication on both deadlines and cost estimates – guaranteeing you’ll no un welcome surprise.
Window Installation FAQs
What are the best windows for Chicago winters?
Double- or triple-pane windows with Low-E coatings and argon fill perform best against Chicago’s cold and wind. We’ll recommend the right glass package for your home and budget during the consultation.
Will new windows really lower my energy bills?
Yes — replacing old single-pane or leaky windows cuts drafts and heat transfer, which eases the load on your furnace and AC. Many Chicago homeowners see a noticeable difference the first winter.
Should I choose double-pane or triple-pane?
Double-pane is a strong, cost-effective upgrade for most homes; triple-pane adds extra insulation and sound control, which is worth it on noisy streets or very exposed elevations. We’ll help you weigh it.
Can you replace windows in a historic bungalow or greystone?
Absolutely. We offer profiles and finishes that preserve the look of older Chicago homes while delivering modern efficiency, and we work within landmark/historic-district requirements where they apply.
Do you handle permits?
Yes — we manage all required permits and inspections with the Chicago Department of Buildings so your project stays compliant.
How long does window installation take?
Most homes are completed in one to a few days depending on the number of openings. We give you a clear timeline up front.
Do new windows reduce street noise?
Yes. Multi-pane glass and a proper seal significantly cut outside noise — a real benefit on busy Chicago streets and near transit.
How do I get started?
Call 773-377-4898 or request a free estimate online and we’ll schedule your in-home consultation.
Ready for Quieter, More Efficient Windows?
Get a free, no-pressure window estimate from Chicago’s trusted design-build team.
