Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Therma-Tru Window Replacement: The Boynton Beach Owner’s Guide
Therma-Tru window replacement in Boynton Beach typically runs $425 to $1,150 per window installed, depending on the sash size, glass package, and whether the frame itself needs work. We stock Therma-Tru-compatible sashes, balances, and weatherstripping on our trucks, and most straightforward window replacements are done in a single visit. Most Boynton Beach homeowners discover the failure the same way: a sash that drops hard when you let go, condensation you can’t wipe off from either side, or a window that suddenly needs two hands and a hip to close in August.
Which Therma-Tru Models This Applies To
We replace windows across the Therma-Tru line: the Classic-Craft, Slim-Line, and Profile series, along with the older Benchmark entry lines that still turn up in Boynton Beach homes built in the late 1990s and early 2000s. The part match starts with the white manufacturer label on the frame’s interior edge, usually on the hinge side. That label carries the series name and a production code. If the label’s gone, which happens often after two decades of Florida sun, we measure the visible glass dimensions and the sash wall thickness on site. One gotcha specific to Therma-Tru: their sash profiles changed subtly around 2012, so a balance assembly from a newer Slim-Line will not seat correctly in a pre-2012 frame without modifying the shoe. We carry both the OEM Therma-Tru replacement components and quality aftermarket equivalents from CWS and PGT-compatible suppliers, and we show you both prices on paper side by side before any work begins. We are an independent service provider, not affiliated with Therma-Tru, which is why we can quote those options honestly.
Signs Your Therma-Tru Window Replacement Is Failing
- The sash drops when released or won’t stay open. That’s a failed balance assembly. In Therma-Tru windows from the mid-2000s, the block-and-tackle balances were specced for northern temperature swings, and the constant heat cycling in Boynton Beach fatigues the springs inside them years earlier than the manufacturer’s projections.
- Fogged glass between the panes. The insulated glass unit seal has failed. Once humid Florida air gets between the panes, the argon or krypton fill is gone and the glass will never clear on its own. We see this spike in September, right as the humidity finally relents.
- The window binds, scrapes, or requires real force to open. Frame movement from slab settlement or repeated thermal expansion has pulled the frame out of square. The sash still fits the opening, but it’s fighting the frame at one corner.
- Rattling or air movement at the meeting rail. The interlocking weatherstripping has compressed or torn. In Therma-Tru Profile units near the coast, salt air accelerates the rubber breakdown noticeably compared to inland homes.
- You can see daylight through a closed, locked window. This is not a weatherstripping fix. The sash or the frame has moved past spec, and shimming or full replacement are the real options.
Replacement Cost & What’s Included
In Boynton Beach, we quote Therma-Tru window replacements on a flat, line-item basis so you see the sash cost, the balance or hardware cost, and the labor as separate entries. A typical single-sash replacement with a standard Low-E insulated glass unit runs $425 to $650 installed. A full frame-and-sash replacement, which becomes necessary when the frame has shifted or rotted, runs $850 to $1,150. Impact-rated Therma-Tru-compatible glass pushes the upper end of the range. Ever window replacement we install carries our Done Right Promise, and under The Keystone Standard, both the manufacturer warranty layer and our workmanship terms are registered in writing before our truck leaves your driveway. You’ll know the warranty durations before you pay, not after you call back.
DIY or Call Us?
You can safely do the diagnostic work yourself: check for the label, note whether the fog is inside the glass or on the surface, and test whether the window binds at top, bottom, or sides. What we caution against is swapping balances or sashes on your own. Therma-Tru balance assemblies hold real tension, and the older ones in particular can release unexpectedly if removed in the wrong sequence. A damaged sash can also drop hard enough to crack tile or hurt someone underneath. We also see a fair number of DIY replacements where the homeowner ordered by measurement and ended up with a sash that’s a quarter-inch off, which in a coastal building envelope is enough to fail a wind-mitigation inspection. If you want to know what we’d install and what it costs, call (561) 708-6771 and we’ll give you an honest number.
FAQs
Therma-Tru windows in Boynton Beach typically last 18 to 25 years before major components fail. The glass seal usually goes first, around year 12 to 15, especially on west-facing walls. Sash balances often follow within a few years. Homes within two miles of the Intracoastal tend to lose hardware faster due to salt exposure. Call (561) 708-6771 if you want us to inspect yours and tell you what’s actually failing.
No, a failed insulated glass seal cannot be repaired. Some companies offer defogging services that drill and vent the unit, but the result is temporary and it never restores the insulating value or the original clarity. The honest fix is replacing the insulated glass unit or the full sash, which is what we quote in Boynton Beach every week. Call (561) 708-6771 for a free estimate on either option.
A single-sash replacement on a Therma-Tru window takes under two hours on-site once we have the spec confirmed. Full frame-and-sash replacements take half a day. We measure or verify the label on a first visit, and if we don’t have the exact match on the truck, we’ll have it before we schedule the install. No second appointment left hanging. Call (561) 708-6771 to schedule the free measure and estimate.
Yes. Our trucks in Boynton Beach carry common Therma-Tru sashes, balance assemblies, weatherstripping sets, and hardware. If your window is a current-production model or a popular post-2012 size, there’s a good chance we complete the job the same day we inspect it. If your part is an odd size or an older series, we source it and install once it’s verified. Call (561) 708-6771 and a live person will answer and tell you what we’d likely have for your window.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Boynton Beach and nearby areas.
Six Reasons Homeowners Choose TruePane Windows & Doors
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.



Before
After
Before
After
Before
After