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CWS Windows & Doors: The Woodland Hills Owner’s Guide
We stock and install CWS-compatible window and door parts across Woodland Hills, with most hardware replacements priced between $125 and $650 installed depending on the component. Most CWS balanced assemblies, rollers, and lock sets are repaired the same week we inspect them, not weeks later. Homeowners usually find us because a sliding door suddenly drags across its track, a window won’t stay up anymore, or a lock no longer catches cleanly – and often they’ve already heard from someone else that “you’ll have to replace the whole unit.” That’s rarely true.
We’re an independent service provider in Woodland Hills, not affiliated with CWS. That matters because we’re free to recommend a repair over a replacement when a repair honestly makes more sense.
Which CWS Models This Applies To

CWS manufactured windows and doors under several series lines over the years, and the parts are not interchangeable between all of them. The two most common in Woodland Hills homes are the vinyl single-hung and horizontal slider series, plus a line of aluminum-frame patio sliders installed heavily in tract homes built around Warner Center and the neighborhoods south of Ventura Boulevard during the 1980s and 1990s. If you have a metal tag on the frame edge, it will end with a series code – that code is the first thing we ask for.
Here’s the compatibility gotcha most homeowners miss: CWS used at least three different roller designs across their sliding door lines over the years, and the replacements look nearly identical. Installing the wrong roller width will make the door ride too high or bind against the bottom track. We measure the old roller’s wheel diameter and axle housing before ordering, and we keep the most common CWS roller sizes on our trucks. For window balances, the stamp on the side channel gives the weight rating, and mixing those up leaves a window that slams shut or creeps down on its own. On older CWS units, we recommend OEM parts when they’re still available. On newer models, quality aftermarket options from Caldwell and Prime-Line match or exceed original spec at a better price, and we’ll tell you which one the job actually needs.
Styles & brands we work with







Signs Your CWS Windows & Doors Is Failing
- Patio door drags or needs a hip-check to close. Rollers are flattened or the axles are gummed with years of San Fernando Valley dust. Dragging wears down the track, which doubles the repair cost if ignored.
- Double-hung window drops when you let go, or it’s hard to raise. This is the balance assembly failing. CWS balances use a tensioned spring or block-and-tackle mechanism, and once the tension is gone, the sash weight isn’t supported anymore.
- Lock won’t throw, or the latch catches on the strike plate. The frame has settled or the sash has warped. Small shimming fixes this on most CWS units, but it takes measuring to get it right – not forcing the handle.
- Condensation between the panes, every morning. The seal on the insulated glass unit has failed. The glass needs replacement, not the whole window. We measure, order, and swap the IGU while keeping your original frame.
- Draft you can feel on a December evening. Weatherstripping on older CWS units compresses and stops doing its job. It’s one of the cheapest fixes we do, and it cuts heating bills noticeably in Woodland Hills winters.
See the difference
Before
After
Before
After
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AfterReplacement Cost & What’s Included

Installed prices for CWS parts in Woodland Hills break down like this:
- Window balance replacement: $125 – $250 per window, parts and labor included.
- Sliding door roller replacement: $180 – $380 per door panel, including track cleaning and alignment.
- Lock and latch hardware: $95 – $225, depending on whether it’s a direct swap or needs mortise work.
- Weatherstripping and seal replacement: $90 – $180 per window or door.
- Insulated glass unit replacement: $350 – $650 per sash, measured and ordered to match your CWS frame.
The range depends on access, whether we’re working on a ground-floor slider or a second-story window, and whether the original hardware is still manufactured. Every quote is a written line-item price before work starts, so you’ll see parts and labor separated. Our workmanship warranty covers each repair for 365 days from the completion date – if the part we installed fails, we come back and fix it at no charge.
DIY or Call Us?
You can safely inspect a few things yourself. Check the track for debris, wipe down the weatherstripping, and note whether the problem happens on one window or every window of the same age. That information saves us time and saves you money on the service call.
What you shouldn’t do is pop a window sash out and start disassembling balances without the right tools. CWS balances hold tension, and when they release unexpectedly, they take chunks out of the frame or fingers. Same thing with removing a sliding door panel – they’re heavier than they look, and the torsion from a bad lift can strain your back or break glass. Isaac Pruett has pulled enough of these apart in Woodland Hills homes to know when a 20-minute fix stays a 20-minute fix, and when it turns into a three-hour repair because a well-meaning owner made it worse first. If you’re not sure, call (831) 290-6866 and describe what the window or door is doing. We’ll tell you whether it’s worth a service visit.
FAQs

Most CWS balance assemblies last 15 to 20 years in our climate, but prolonged summer heat and UV exposure on west-facing windows can shorten that to 10 to 12 years. If yours are failing one at a time, the others from the same installation are likely close behind. Call (831) 290-6866 and we’ll give you a straight assessment on whether replacing the full set now saves money over doing them piecemeal.
Rarely. Rollers flatten over time, and once the wheel is out of round, no amount of cleaning or lubrication brings it back. Replacement is the fix, and it’s a same-visit job for us in Woodland Hills in most cases. The decision you actually make is whether to replace one roller or both panels while the door is off the track – we’ll show you the condition of each and let you decide.
A balance replacement runs 30 to 60 minutes per window. A slider door roller sets takes about an hour. An insulated glass replacement takes one visit to measure and a second visit two to three weeks later to install the custom-cut unit. Most hardware fixes are done in a single visit, and we always confirm the written price before we start.
We carry the most common CWS roller sizes, balance assemblies, and lock hardware on our trucks, because those fail most often in Woodland Hills homes. Odd sizes and discontinued series parts take 3 to 5 business days to order. We also keep compatibility parts for other brands we regularly service, including KraftMaid, Cambria, and Silestone. If you want certainty on a specific part, call (831) 290-6866 with your window’s series code and we’ll check stock before you book.
Tell me what you need done. I’ll tell you what it takes and what it costs. Then we get to work. Call (831) 290-6866 for a free estimate on any CWS window or door repair in Woodland Hills.
Written by Isaac Pruett, Owner, Mason Remodeling Co – Woodland Hills, CA at Mason Remodeling Co Woodland Hills, serving Woodland Hills and nearby areas.


