24 Chicago Window Repair and Replacement Companies Worth Knowing

Old windows don’t just let in Lake Michigan breezes—they leak cash, kill curb appeal, and make every passing truck sound like it’s driving through your living room. The upside? Chicago is stacked with crews who can repair, restore, or swap out those trouble spots, from vintage triple-hungs to modern energy-savers. Ready to bring the outside in (without the draft)? Here are 24 window pros with real reputations—covering everything from historic restoration and one-day fixes to full-blown custom replacements. --- ## 1. Chicago Green Windows This is the place vintage home lovers whisper about at block parties. Founded by a carpenter tired of watching old-growth wood (and old-school style) land in the dumpster, Chicago Green Windows put preservation first. They’ll restore what’s worth saving, match the look if replacements are needed, and help your house weather Chicago’s wild swings. Owner Dan has journeyman credentials, a building science obsession, and a reputation for mapping the best mix of efficiency and historic accuracy—no shortcuts, no vinyl where wood belongs. ## 2. Window Nation Big company, friendly flavor—Window Nation is run by a pair of brothers who grew up talking U-factors at the breakfast table. They’ve handled thousands of jobs nationwide, but that local showroom (and a no-pressure sales style) keeps things grounded. The team specializes in high-performance replacement windows, doors, and simple, transparent estimates. Quick turnarounds are common, and crews know how to juggle Chicago’s stop-and-go weather without leaving clients waiting for weeks. ## 3. Apex Window Werks If a cracked sash or foggy glass needs fixing yesterday, Apex Window Werks is a wild card locals reach for. They’re a rare blend: on-call experts for repair and glass swaps, plus their own manufacturing muscle for full window and door builds. Expect responsive service (often same-day for emergencies), no-nonsense quotes, and techs who take as much pride in making the repair invisible as they do in big reno jobs. **Top Rated:** Need 5-star service? Check out [Chicago Window Repair & Replacement Company](https://bestofchicago.directory/listings/chicago-window-repair-replacement-company) for expert glass and frame work. ## 4. American Thermal Window Products Started by a Chicago detective, now run by three generations of the Johnson clan, American Thermal builds a case for old-fashioned honesty and craftsmanship. Two showrooms (one in Chicago, one in Niles) and factory-direct pricing mean no runaround. Residential, high-rise, or commercial—these folks have installed just about everything, and specialize in historic replication, too. Clear contracts, veteran installers, and a loooong list of happy regulars. **Don't Miss:** Serving the area for 65+ years, [L.J. Neal & Sons](http://bestofchicago.directory/listings/l-j-neal-sons) is another family-owned favorite worth knowing. ## 5. Sahara Window and Doors Go-to for the north and northwest burbs, Sahara was started by cops, is family-run, and holds more window brands than most dealers combined. Homeowners trust them for tricky jobs (think: huge bay windows or 5th-story installs) and for carrying the big names—Pella, Marvin, Andersen, plus niche storm and fire doors. Head to their Niles showroom if you want to see all the options before you commit. ## 6. Valdicass Inc. Daily video updates on your phone—yes, seriously. Valdicass treats every project like a public demo for how window jobs **should** be done. Founder Walter brings old-world training (and family carpentry roots) from Poland, so expect meticulous fits, manufacturer-spec installations, and jobs that run to schedule. They aren’t the fastest or the cheapest, but clients stick with them for deep expertise and projects that get shown off as “example jobs” by their window suppliers. ## 7. Climate Guard Windows & Doors ClimateGuard is one of those rare companies making their own vinyl windows right here in the city—since 1975. Local knowledge baked in: their designs are tailored for Chicago’s wild seasons and you can even tour their Logan Square factory. Efficient, tough vinyl, a wide range of features, and solid warranty terms keep them on the favorite list among general contractors and detail-obsessed homeowners alike. ## 8. Semko Inc. Referrals keep this small, family-run business booked year-round. Semko’s secret weapon: no sales pitches, no sleazy contracts, just clear quotes, free estimates, and projects that run on time. The team handles both installs and repairs, with lifetime warranties. If piles of online reviews mentioning “fast, friendly, and low-pressure” matter, Semko stays high on the list. ## 9. Gilkey Window Company Best known for vinyl and fiberglass windows designed to last—and installed by some of the most experienced hands around. Nearly five decades in the game, with founder Mike Gilkey still making sure every window meets the standards that put them on the map. Gilkey’s focus on performance (durability, energy savings, clean lines) plus post-install follow-ups means problems get solved, not swept under the rug. ## 10. Argo Glass & Windows Hard water stains, chips, or serious mechanical funk? Argo specializes in repairs over replacements, saving clients a pile of cash and keeping glass out of landfills. Their techs handle everything—commercial, residential, custom glass—and work tight with quality suppliers. If window operations are stuck, or the only thing foggier than last week’s forecast is your living room, these are the folks to call. ## 11. Scientific Home Services Ltd. When other window companies gave up on style (or shut their doors), this team doubled down on service and savvy. Jon and his partner bring over 40 years of know-how—offering impartial advice and a reputation for sourcing windows that last, look good, and suit Chicago’s quirks. Scientific is known for tackling jobs the “throw-it-in-and-leave” outfits avoid, and for treating each assignment with old-fashioned care. ## 12. Woodland Windows & Doors This Itasca-based company is all about longevity: 56 years, three generations deep. Known for methodical installations—they even install in “can’t-feel-my-fingers” weather, thanks to a process that keeps cold out from day one. Expect fair prices, a stacked product selection, no high-pressure tactics, and a crew of trained in-house installers (not random subs). **Compare Quotes:** Browse our full list of [Chicago Window Replacement Services](http://bestofchicago.directory/listings?q=&neighborhood=&cat=12&filter=all) to find the perfect fit for your home. ## 13. Guardian Glass Repair Don’t ditch glass just because it’s scratched or covered in...whatever Chicagoans have tried to clean off. Guardian’s sweet spot: specialty glass restoration, graffiti removal, scratch and stain repair. Fast response, up-front estimates, and same-day fixes when possible in Wicker Park, Logan Square, and beyond. ## 14. Feldco Windows If you’ve lived around Chicago for a few years, you know the Feldco jingle (don’t worry, they don’t sing it at estimates). Nearly 50 years, still family-run, and covering a huge chunk of the Midwest. Feldco shines for homeowners who want solid value, energy savings, and a big local support network without paying luxury markups. Bonus: their products are Midwestern-weather tested. ## 15. Best Windows Inc. Not a fan of sales theatrics? You’re in luck. Best Windows never asks for both homeowners to be present, never drops prices just to “close the deal,” and can usually knock out a quote in under an hour. No mystery fees, no pressure—just straight shooters focused on punctuality, transparency, and installations that dial in both function and fit. **See the Listing:** Read verified reviews and get directions for [Best Windows](https://bestofchicago.directory/listings/best-windows) in our local directory. ## 16. Premier Quality Windows & Siding In Oswego and the southwest burbs, Premier Quality lives up to its name. Fully tailored quotes, a friendly in-house team, multiple product options, and the kind of showroom where they’ll walk you through every possible detail—but never nudge you too hard. Your neighbors will likely mention these folks if you ask for a window company in Aurora, Naperville, or Bolingbrook. ## 17. HomeBuild Windows Jobs done right, done fast, and done affordably—HomeBuild has built a following on those principles (along with trained techs and strong warranties). They’ll give honest advice if repair beats replacement, and pride themselves on clear schedules, prompt communication, and actually cleaning up after the job. Roofing, windows, doors—it’s all part of the same pro playbook. ## 18. Oak Brothers Historic Restoration If your windows have more stories than a Greektown diner, Oak Brothers “gets it.” Transparent contracts, clear communication, regular progress updates, and the patience to explain historic methods—every step documented in writing and photos. There’s no “upsell” pressure, just restoration from folks who treat your home like theirs. Especially great for anyone living in the city’s older neighborhoods or historic districts. ## 19. WindowWorks For homeowners who want big company resources with the feel of a family business, WindowWorks hits the mark. In business since 1996, they back every install and replacement with deep warranties and real service—plus, no project is too big or too small for their in-house crews. Vinyl windows are their bread and butter, but customization and factory-direct installs keep them a step ahead on value and fit. ## 20. Restoration Works Inc. Restoration Works has quite the reputation among preservationists: authentic, century-old wood (and steel) window restoration, fully custom storm windows, and “green” practices to boot. The star feature is their “Timeless Window” process, bringing 100-year-old windows back to life and—thanks to serious wood science—keeping them swinging for another century. Fully custom work, formal historic consultation, and plenty of love for residential projects. **Explore More:** View other local experts specializing in [Window Restoration](https://bestofchicago.directory/listings?q=&neighborhood=&cat=41&filter=all) for your historic home. ## 21. Rotten Window Repair Company When total replacement seems extreme (or unaffordable), Rotten Window Repair can often make that old sash look—and work—like new. Experts in wood rot, glass, and hardware repair, covering the city plus most west and southwest suburbs. They excel at fixing what other outfits say “can’t” be saved, get repeat business for fair pricing and solid problem-solving. ## 22. Fortune Restoration Started in a basement by three brothers, Fortune Restoration is less about mass production than craftsmanship—and a love of Chicago’s unique buildings. They’ve become fixtures for exterior painting, masonry, custom millwork, and yes, window restoration. Many of Chicago’s historic homes (like the Noble Seymour Crippen House) have Fortune’s handiwork to thank for their glow-up. ## 23. Advanced Window Corp Full-on manufacturing operation on the city’s Northwest side, making custom vinyl windows for 25+ years. Advanced Window specializes in quick-turn glass repairs, high-efficiency vinyl models (with internal blinds and plenty of custom choices), and — importantly — offers walk-ins for advice or small repair work. Expect product lines designed for Midwest winters at sensible prices. ## 24. Opal Enterprises Started by Voytek and Tara almost 20 years ago, Opal is about as neighborly as a remodeling outfit gets—focusing on residential exteriors and green upgrades in the west and southwest burbs. Curb appeal gets a boost (but not at the cost of comfort) and repairs or full replacements are handled by a team full of in-house craftspeople. Known for detailed customization and clear, regular updates during the job. --- ## What to Ask Before Hiring a Window Pro - Can you handle repairs as well as replacements? (Many crews strongly prefer one over the other.) - What’s the real lead time—especially during busy seasons? - Who does the actual installation—your staff, or subcontractors? - Will you handle city permits and condo requirements if needed? - Do all products carry a true warranty, and what’s covered (labor, glass, hardware)? - Can I visit your showroom or see local jobs you’ve completed? --- ## Typical Costs in Chicago - **Repair (glass, hardware, simple rot fixes):** $100–$400 per window - **Custom wood window restoration:** $700–$1,500 per window - **Vinyl replacement (installed, basic styles):** $300–$700 per window - **Premium/historic replication:** $900–$2,500+ per window - **Travel charges:** Some companies add fees for outer suburbs—always ask up front. --- ## Red Flags to Watch For - Aggressive up-selling or “today-only” pricing - No clear written warranty or install details - Refusal to provide references or previous client addresses - Ultra-low bids that skip site measurements - Contractors who won’t clarify who exactly is showing up to do the work --- ## Best Time to Book - Labor Day through early winter brings competitive pricing, but freeze-proof installs can get backlogged - Spring comes with a rush: book early if you want jobs done before peak heat or humidity --- **Find a Pro:** Search our directory for top-rated [Window Manufacturing](https://bestofchicago.directory/listings?q=&neighborhood=&cat=34&filter=all) and [Installation Professionals](https://bestofchicago.directory/listings?q=&neighborhood=&cat=34&filter=all) near you.