I highly recommend Keller! The windows which I had replaced in my home are wonderful and I was very pleased with working with Keller. John Keller was very professional and honest in his recommendations for my windows as well as giving me a fair price for quality windows and workmanship. This is the only company to go with for window and door installation!
Door & Window Repair Service
Window Repair in O'Fallon, MO
Keller Window & Door LLC provides professional window repair for O'Fallon homeowners dealing with broken glass, failed seals, and hardware issues.
- Restored glass seals stop moisture and fogging between panes
- Repaired weatherstripping reduces drafts and lowers heating and cooling costs
- Fixed locks and hardware improve home security without a full window replacement
- Addressing frame damage early prevents water intrusion and wood rot
- Proper sash and track repairs let windows open, close, and lock smoothly again
Expert Window Repair in O'Fallon, MO
When a window stops working right, it affects your home's comfort, security, and energy use. Keller Window & Door LLC handles window repair for O'Fallon homeowners dealing with cracked glass, fogged panes, broken hardware, and worn weatherstripping. We assess each window carefully before recommending a repair or replacement, so you only pay for what your window actually needs. O'Fallon sits in the St. Charles County area of Missouri, where hot, humid summers and cold winters put real stress on window seals and frames. That seasonal swing causes seals to fail, frames to shift, and hardware to wear out faster than in milder climates. We repair double-hung, casement, sliding, and picture windows in homes across O'Fallon. Whether you have a single broken pane or several windows with seal failures, we can inspect, diagnose, and fix the problem. Call Keller Window & Door LLC to schedule your window repair in O'Fallon.
What's included
- Restored glass seals stop moisture and fogging between panes
- Repaired weatherstripping reduces drafts and lowers heating and cooling costs
- Fixed locks and hardware improve home security without a full window replacement
- Addressing frame damage early prevents water intrusion and wood rot
- Proper sash and track repairs let windows open, close, and lock smoothly again
Andersen Certified Contractor and Elite Certified distinction
Former Andersen employee owner with 30 years field experience
Factory-level installation precision and quality standards
Transparent pricing and clean workmanship
Appointment-only service for focused attention
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FAQ
Window Repair FAQ
Common questions about window repair in O'Fallon, MO.
Yes, foggy panes are caused by a failed seal between the glass layers, and we can repair or replace the affected unit. This restores clarity and brings back the window's insulating performance.
Repair is often the right call when the frame is sound and the damage is limited to glass, seals, or hardware. We inspect each window in O'Fallon and give you a straight answer based on what we find.
Yes, we repair worn balances, broken cranks, and damaged tracks that cause windows to stick or fall. Most hardware and balance issues can be fixed without replacing the full window.
Cracked glass typically needs to be replaced rather than patched, especially in O'Fallon homes where temperature swings can spread a crack quickly. We cut and install replacement glass sized to fit your existing frame.
Yes, we work on windows in homes of all ages across O'Fallon, including older construction with wood frames or original hardware. We match repairs to what the window needs, not a one-size solution.
We repair double-hung, casement, sliding, and picture windows for O'Fallon homeowners. If you are not sure what type you have, we can identify it during our inspection.
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Client Reviews
What St. Charles County homeowners say.
5.0
11 Google reviews
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Proudly Based in O'Fallon, MO
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Phone
(314) 399-2001Hours
- Monday 8:30 AM - 4:30 PM
- Tuesday 8:30 AM - 4:30 PM
- Wednesday 8:30 AM - 4:30 PM
- Thursday 8:30 AM - 4:30 PM
- Friday 8:30 AM - 4:30 PM
- Saturday Closed
- Sunday Closed