Therma-Tru Window Replacement Nationwide

Therma-Tru Window Replacement: The West Palm Beach Owner’s Guide

Therma-Tru window replacement in West Palm Beach typically runs $385 to $890 per window installed, depending on glass package, frame condition, and whether you’re replacing the sash, the full unit, or just failed glass. We stock common Therma-Tru sashes and hardware on the truck, so most jobs in West Palm Beach are completed the same day we diagnose the problem. You’ll know something’s wrong when a window won’t lock square, condensation sits permanently between the panes, or the frame feels loose against the jamb when the coastal wind pushes on it.

Call (728) 728-9381

Most owners call us after noticing one of three things: a draft they can trace to a specific window, water staining on the interior sill after a hard rain, or glass fog that won’t wipe off. Whatever brought you here, we’ll match an exact Therma-Tru part to your existing frame and install it the same day we can get it on the house.

Which Therma-Tru Models This Applies To

Therma-Tru sells two window systems in Florida: the insulated vinyl series (the V-1 and V-2 lines) and the fiberglass series (the Integrity line, sometimes labeled Therma-Tru Classic in coastal specs). The vinyl lines are the ones we replace most in this market. Your window’s serial and model information is laser-etched on the top of the interior sash rail, behind the weatherstrip flap. If the etching is gone, we measure the sash profile width, the glass unit thickness, and the cam-lock spacing to identify it.

There’s a compatibility gotcha worth knowing: Therma-Tru changed its sash profile in 2014, so a 2012-era sash won’t drop into a 2016 frame. If you’re buying a used sash on eBay or from a local supplier, get the manufacture-year stamp confirmed before you spend the money. We run OEM Therma-Tru parts when the warranty is still active, and we’ll recommend a Miami-Dade or Palm Beach County aftermarket equivalent when it’s a better value for the customer.

Meridian Windows and Doors West Palm Beach is an independent service provider. We are not affiliated with Therma-Tru. We install their products, and we also stock compatible parts and hardware, but we’re not a brand-owned service center.

Signs Your Therma-Tru Window Replacement Is Failing

• Condensation between the glass panes. The insulating glass unit has lost its seal, likely from a failed butyl edge seal or years of thermal cycling in Florida heat with daily sun on the south exposure. Once the seal goes, the argon or krypton fill leaks out and the glass fogs. The only fix is a new IGU.
• A sash that won’t stay up or won’t lock at the meeting rail. The balance system, either a block-and-tackle or spiral balance depending on the year, has lost tension. If the tilt-latch or cam-lock is worn, the two sashes don’t press together and the window leaks air at the mid-rail.
• Sticking or binding when you tilt or slide the sash. The sash is dragging in the track, usually from frame warping or the jamb liner pulling loose. In West Palm Beach, PVC and fiberglass frames can expand dramatically with the afternoon heat; a window that sticks only in the afternoon needs the reveal adjusted, not a full replacement.
• Interior water staining below the window. The weep system or the sill dam has failed. In South Florida, wind-driven rain against the glass accumulates faster than a plugged weep hole can drain it, and the overflow runs inside. Look at the exterior weep flaps first; if they’re clogged or broken, don’t replace the window until you’re sure that’s not the whole problem.
• A cracked sash or snapped hardware tab. Therma-Tru sashes crack along the bottom rail on the interior side, where years of leaning, closing, and UV exposure have degraded the vinyl. Once the corner weld fails, the sash pulls apart and the glass flexes. That’s a safety concern and a replacement job, not a repair.

Replacement Cost & What’s Included

In West Palm Beach, a single Therma-Tru window replacement runs $385 to $890 installed. That includes the part, labor, exterior cap coil or trim if needed, and disposal of the old unit. Here’s the breakdown:

• Glass unit only (seal failure): $245 – $410
• Sash replacement (single sash, standard size): $385 – $560
• Full window replacement (frame and sash): $590 – $890
• Hardware-only (balance, lock, tilt latch, weatherstrip): $95 – $240

What drives the range: the glass package (laminated vs. tempered, high-impact vs. standard), the window’s size, whether the installation is first or second floor, and if the exterior trim needs re-coiling. Every price goes on paper before work begins, and it does not move at the door. Our 365-Day Done Right Promise covers every Therma-Tru replacement we install: if the work fails within the guarantee period, we come back at no charge.

DIY or Call Us?

Window glass and sash replacement looks approachable, and for a single tilt-in sash on the ground floor, a careful owner with the right measurements can often do it. But here’s where DIY goes wrong on Therma-Tru units in South Florida: the sash is loaded glass, and if you drop a 40-pound sash while it’s tilted out of the frame, that’s a serious injury risk, not a cleanup. The balance system on some Therma-Tru units holds spring tension; if you don’t know how to safely disengage the block-and-tackle before you pull the pivot bar, the sash can snap your fingers against the frame.

Elliot Vance puts it this way: “Measure it right the first time and the install explains itself.” If you’d rather not find out what a loaded balance does to a thumb, call us at (728) 728-9381. We’ll measure, quote, and replace the same day.

FAQs

Call Meridian Windows and Doors West Palm Beach

If you have a Therma-Tru window that’s fogged, cracked, or won’t stay shut, call (728) 728-9381. We’ll ask what you’re seeing, give you a written price before any work starts, and schedule the replacement for a time that works for your week. Every window we install is covered in writing for 365 days by the Done Right Promise. If it fails within the year, we come back at no charge.

Written by Elliot Vance, Owner, Meridian Windows and Doors West Palm Beach at Meridian Windows and Doors West Palm Beach, serving West Palm Beach and nearby areas.