Therma-Tru Window Replacement Nationwide | Winslow Windows & Doors

Therma-Tru Window Replacement: The Boca Raton Owner’s Guide

Therma-Tru window replacement in Boca Raton typically runs $340 to $980 installed, depending on the sash, glass package, and hardware that failed. We stock common Therma-Tru-compatible sashes, balances, and weatherstripping on our trucks, and most replacements go in same-day once we confirm the model and measurements. The usual story we hear: a window won’t stay up, a lock won’t catch, or condensation has permanently fogged the glass, and the homeowner is tired of propping it open with a book.

Call (561) 816-5648

Which Therma-Tru Models This Applies To

Therma-Tru built its name on entry doors, but its window line shows up throughout Boca Raton communities like Broken Sound, Boca West, and the older neighborhoods off Federal Highway. The replacement path depends on one thing first: the serial or order number etched into the corner of the glass or printed on a sticker inside the frame channel. That number tells us whether you have a Therma-Tru casement, double-hung, or picture window, and which glass package was originally installed. Here’s the compatibility gotcha most people miss: Therma-Tru window hardware changed across production years, and a balance from a 2012 double-hung will not match a 2022 unit, even if the windows look identical from across the room. Measurements matter just as much as the brand label. We measure width, height, and frame depth before ordering, then match OEM parts where they’re still available or a quality aftermarket equivalent when the original is discontinued. Winslow Windows & Doors is an independent installer and service provider, not affiliated with Therma-Tru, which means we’re free to pick the best part for your window without a brand loyalty tax.

Signs Your Therma-Tru Window Replacement Is Failing

• Window drops or won’t stay open. The balance mechanism has worn out or snapped. In Boca Raton’s humidity, metal components inside the balance corrode faster than you’d think, and once tension is lost, the sash is dead weight.
• Condensation between the panes that won’t wipe off. The insulated glass unit seal has failed. Once that seal goes, the argon or krypton fill leaks out and moist Florida air moves in. You’re seeing the failure, not a cleaning problem.
• Lock or latch won’t catch. Sash alignment is off, usually from a sagging hinge or worn pivot bar. Forcing it just grinds the hardware further out of square.
• Drafts or water staining around the frame. Weatherstripping has compressed, or the frame itself has shifted. During Boca Raton’s summer storms, a failed seal shows up fast as water wicking into drywall or trickling down to the sill.
• Visible frame rot or paint blistering. Moisture has found its way into the frame. Once the seal is compromised, salt air does its work quickly. Left alone, the damage spreads to the rough opening and into the wall.

Replacement Cost & What’s Included

Here’s what we quote in Boca Raton, parts and labor together:

• Sash replacement (glass + frame in one unit): $340-$680
• Balance or hardware replacement per window: $140-$280
• Full window replacement (frame-out): $780-$2,400 depending on size, impact rating, and finish
• Insulated glass unit (IGU) replacement only: $380-$890

The range comes down to the model year, whether the part is OEM or aftermarket, and the glass package, especially if you’re upgrading to impact-rated glass to meet current Florida building code. You get a written line-item quote before any work starts, and the number on that paper is the number on the final invoice. No change orders, no “we found something else” calls. Ed Winslow’s name is on the door, and on every job we do, and we back every replacement with our 36500-Day Done Right Promise: if it’s not done right, we make it right.

DIY or Call Us?

Some things you can safely check before calling. Look for that serial number on the glass or frame. Test whether the window is square in its opening, and note exactly when the problem happens: every time, only after rain, only on hot days. That saves us a diagnostic trip and saves you time. But here’s where DIY goes sideways: a Therma-Tru balance is a tension-loaded part, and releasing it the wrong way can send the spring flying. A full sash or frame replacement also means breaking the existing seal and resetting the window in the opening, and if the new unit isn’t flashed and sealed correctly, you’ve traded a broken window for a wall full of rot. That’s what we do every week. If you’re even a little unsure, call (561) 816-5648 and we’ll give you an honest read on the phone before anyone schedules a single day of work.

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