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Get your free estimateCWS Window Replacement: The West Palm Beach Owner’s Guide
We stock and install CWS-compatible window replacements throughout West Palm Beach, with most single-hung or casement replacements running between $850 and $1,400 per opening including labor. The job is usually completed the same day we start it. Most owners discover the problem the way you probably did: a sash that won’t stay up, condensation that never dries, or a lock that no longer catches the way it used to south of Okeechobee Boulevard.
If that sounds like your window, here’s what you need to know before you spend a dollar. A light well is what brings daylight deep into a building, and that is what a well-installed window should do for your home. A CWS window that’s failing isn’t doing that job anymore.
Key takeaways:
- Most CWS window replacements in West Palm Beach run $850 – $1,400 per opening installed
- We carry CWS-compatible replacement parts on our trucks for same-day swaps
- Written price before any work starts, every time
- Every replacement is covered by the 365-Day Done Right Promise
Which CWS Models This Applies To
CWS windows come in several series lines, and the replacement part you need depends on which one you have. The most common CWS models we see in West Palm Beach homes are the single-hung and horizontal roller series, both of which use a standardized balance system and interlock profile. If your window has a CWS label still attached (usually on the top rail of the sash or inside the frame channel), that label will show the series number and manufacturing code, and that’s the fastest way for us to match the right replacement.
One compatibility gotcha worth knowing: CWS single-hung windows built before roughly 2008 used a slightly narrower balance channel than later production runs. Measuring the channel width yourself won’t always tell you which version you have, because the difference is about 1/16 of an inch. We match by glass size, balance tube length, and spring weight rating, not just by the model name stamped on the frame. That matters because a balance with the wrong weight rating will either slam the sash shut or let it drift down slowly, which is exactly the failure most people are trying to fix.
On the OEM versus aftermarket question: for CWS windows specifically, we use genuine CWS replacement parts whenever the window is still under manufacturer warranty. For older models where the OEM part is discontinued, we carry quality aftermarket equivalents that match the original spring rating and profile, and we’ll tell you before installing which one we’re using and why. You should never have to guess.
Styles & brands we work with










Signs Your CWS Window Replacement Is Failing
- The sash drops when you let go. The balance springs inside the side channels have lost tension. In Florida heat and humidity, the nylon bearings inside those springs wear faster than they would in a drier climate, and once the spring loses its grip, the window won’t stay open.
- Condensation between the panes that never clears. The seal around the insulated glass unit has failed. West Palm Beach’s humidity doesn’t cause the seal to fail, but it makes the result obvious fast: fog you can’t wipe away because it’s trapped inside the glass.
- You feel airflow or see daylight around the frame even when the window is closed. The weatherstripping or the interlock between sashes has compressed or shifted. In older El Cid homes especially, settling frames can throw off the alignment enough to break the seal the weatherstripping was designed to make.
- The lock scrapes, sticks, or won’t turn. Frame movement or a bent keeper plate is usually the culprit. Forcing the lock makes it worse, and a window that can’t lock leaves a real gap in your home’s security.
- Opening the window takes real work or makes a grinding sound. The rollers or glide pads are worn or the track is misaligned. In a horizontal roller, this often means the nylon wheels have flattened on one side, which can happen surprisingly quickly in coastal air that carries fine sand and salt.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
For CWS window replacements in West Palm Beach, most jobs land between $850 and $1,400 per opening, fully installed. The spread depends on what actually failed. A balance replacement on a single-hung runs toward the lower end of that range. A full sash replacement with new insulated glass runs higher, especially if the window is oversized or has tinted glass.
Here’s how the pricing breaks down:
- Balance spring replacement (single-hung): $180 – $320 per window
- Sash replacement with new insulated glass: $550 – $900 per window
- Full window replacement including frame and trim: $1,100 – $1,400 per opening
Every price includes labor, the replacement parts, and clean-up before we leave. We name the price in writing before the work starts, and the number on that written quote is the number on your invoice. If the finished replacement isn’t right, the 365-Day Done Right Promise means we make it right, no debate and no countdown.
DIY or Call Us?
There are a few things you can safely check yourself. Look for the CWS label on the sash or frame channel and snap a photo of it. Run your hand around the frame to feel for gaps or shifted weatherstripping. Check whether the lock catches cleanly. Those observations help us quote the job accurately over the phone.
What we’d ask you not to do is remove the sash yourself. CWS spring balance systems can be under significant tension, especially on larger windows, and if the spring releases while your hand is inside the channel, the injury can be severe. The same goes for prying off the frame to try to access the balance tube. We carry replacement parts on the truck and the swap is quick for a trained technician with the right release tool. For a homeowner without that tool, it isn’t quick and it isn’t safe.
Call us at (728) 203-1160. We’ll talk through what you’re seeing, give you a written price, and get the window working again.
FAQs
Most CWS windows in West Palm Beach last 15 to 25 years before a major component fails, depending on exposure. South and west-facing windows that take direct afternoon sun wear out their balance springs and seals faster than shaded windows, and homes closer to the Intracoastal deal with more salt in the air than neighborhoods farther inland. The balance springs are usually the first part to go, often 10 to 15 years in. Call (728) 203-1160 and we can tell you what you’re looking at based on the specific failure.
Yes, in many cases. If the balance springs are worn or the weatherstripping has compressed, we can replace those individual components without touching the glass or frame, which keeps the cost down substantially. If the insulated glass unit itself has lost its seal and is fogging, the sash needs to be replaced because the glass cannot be resealed once the gas has escaped. We’ll tell you before any work starts which situation you have. Call (728) 203-1160 for an honest assessment.
A balance or weatherstripping replacement on a CWS window usually takes 30 to 60 minutes per window once we’re on site. A full sash replacement runs about an hour per window. We bring replacement parts with us, so there’s no second trip while parts get ordered, and we clean up before we leave, including a photo of the finished clean-up if you want one.
We stock the most common CWS replacement parts on our trucks: balance springs, weatherstripping, lock mechanisms, and rollers for the horizontal series. For less common parts or custom glass sizing, we special-order and typically have the part within a few business days. We’re an independent West Palm Beach window company, not a CWS affiliate, which means we stock what our local customers actually need rather than carrying a brand-specific inventory that may not match your home. If you also have PGT, CGI, or ES Windows on the house, we carry replacement parts for those as well, since most Palm Beach County homes end up with more than one brand over time.
No. The written price we give you before the work begins is the price you pay. If we open up the window and find something unexpected, we’ll stop and explain what we found and what it costs before touching anything else. We don’t hand you a bigger number at the end of the day. Keith Yamada and the crew work on the principle that a window should do two things quietly: keep the weather out and let the right light in. A surprise invoice isn’t part of that.
Written by Keith Yamada, Owner, Lightwell Windows West Palm Beach at Lightwell Windows West Palm Beach, serving West Palm Beach and nearby areas.
Six Reasons Homeowners Choose Lightwell Windows West Palm Beach
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
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.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.