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Get your free estimateCGI Window Replacement: The Pasadena Owner’s Guide
CGI window replacement in Pasadena typically runs $650 to $1,400 per opening installed, depending on the series, glass package, and whether the frame needs reframing or just a sash swap. We keep the most common CGI parts on our trucks and can usually complete a single-window replacement in one visit. Most owners discover the problem the hard way: a window that suddenly won’t lock, a room that feels draftier than it did last winter, or a crank that spins without moving the sash. The good news is that CGI builds windows in modular components, which means we can often replace just the failed piece rather than tearing out the whole frame.
Which CGI Models This Applies To
CGI’s lineup breaks into a few families: the Estate Series, the Estate Collection, and their impact-rated Sentinel line, which is what we see most often in Pasadena hillside homes and anywhere near the Arroyo Seco where wind exposure is real. On the frame, look for a small white or silver label along the side jamb with the model number etched in, or check the top of the sash near the lock mechanism. That label tells us the glass package, DP rating, and the exact hardware generation, all of which matters because CGI changed their roller and balance designs between older and newer production runs. A 2009 Estate Series window and a 2019 Estate window may look identical from five feet away, but the replacement parts are not interchangeable, and guessing at that is how a simple repair becomes a second replacement. We install OEM CGI parts when the warranty and fit matter most, and we use proven aftermarket equivalents only where they match or exceed the original spec, and always with your sign-off first. We are an independent Pasadena service provider, not a CGI factory dealer, so our recommendation is based on what fits your window, not what a brand requires us to push.
Styles & brands we work with









Signs Your CGI Window Replacement Is Failing
- The sash won’t stay open or closed. This usually means the coil balance or constant-force balance has lost tension. CGI balances are sized by window weight, and the wrong replacement spring means the sash either slams shut or drifts open on its own.
- You can feel air moving around a closed window. Weatherstripping degrades faster in Pasadena’s dry heat than it does on the coast. Once the wool pile or vinyl gasket compresses flat, the seal is gone, and the fix is replacing the weatherstrip, not the window, unless the frame itself has warped.
- The crank handle turns freely but nothing moves. The operator mechanism’s gears strip, particularly on older CGI casement windows. This is a part replacement, not a full window replacement, and it is one of the cheapest repairs we do.
- Condensation between the panes. The insulated glass unit’s seal has failed. You cannot clean between the panes, and the glass unit itself needs replacing, though the CGI frame can usually stay in place.
- The lock or multi-point hardware no longer engages. CGI’s multi-point locks rely on linkage rods that bend or break over years of use. A window that won’t lock is a security and air-sealing problem in one, and it deserves attention the week you notice it, not next season.
See the difference
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After
Before
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Before
AfterReplacement Cost & What’s Included
In Pasadena, expect most single CGI window replacements to fall between $650 and $1,400 per opening. A glass-only swap in an existing frame sits at the lower end. A full frame replacement with new sash, hardware, and exterior trim work lands at the higher end, especially on older Craftsman homes in Bungalow Heaven where the rough openings are never perfectly square and every adjustment takes patience. Every quote we write is a written price before work starts, and that price includes the part, labor, disposal of the old unit, and the interior cleanup. We do not do change orders, so the number on the quote is the number on the invoice. The work is covered by our 365-Day Done Right Promise: if something is not right within a year, we make it right.
DIY or Call Us?
You can safely check whether the failure is obvious: a loose handle screw, a latch that needs cleaning, weatherstrip that has visibly pulled away from the channel. What you should not attempt is removing a sash that is under spring tension. CGI balance systems and tensioned hardware can release suddenly, and that is how fingers and hands get hurt. Even a glass-only removal carries risk without the right suction tools and thermal break knowledge, because CGI’s impact-rated glazing is heavy. If the window is older than ten years, we also want the frame inspected for hidden rot around the sill, which Pasadena’s winter rains can start and the summer heat can hide. Call (626) 628-2308 and we will tell you honestly what we think before we ever schedule the truck.
FAQs
A well-installed CGI window frame can last 25 to 40 years in Pasadena, while the moving parts, balances, weatherstrip, and hardware, typically need attention every 10 to 15 years because our dry heat and UV exposure wear soft components faster than coastal climates do.
Yes, in most cases we can replace the failed component rather than the entire window, whether that is a balance, operator mechanism, lock linkage, or the insulated glass unit itself. If the frame is rotted or warped, a full replacement becomes the honest recommendation. Call (626) 628-2308 and we will walk you through what we would do.
A single sash or glass replacement usually runs two to four hours from setup to cleanup, while a full frame replacement can take most of a day. We protect the floors with drop cloths, wear shoe covers, and send a photo of the cleanup before the crew leaves.
We stock common CGI balances, rollers, weatherstrip, and lock parts on the truck, and we also maintain quick access to the full CGI parts pipeline for less common pieces. This means many Pasadena repairs happen in a single visit, with no waiting game. Call (626) 628-2308 for a free estimate and an honest answer on your specific window.
A window should answer the room, not just fill the hole. That is the standard Keith Yamada has kept since the days when he studied building construction technology in the San Gabriel Valley, and it is what we bring to every CGI window replacement we touch. A light well is what carries daylight deep into a building, and a properly fitted window does the same for a home.
Written by Keith Yamada, Owner, Lightwell Windows Pasadena at Lightwell Windows Pasadena, serving Pasadena and nearby areas.
Six Reasons Homeowners Choose Lightwell Windows Pasadena
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.