Therma-Tru Window Replacement Nationwide

Therma-Tru Window Replacement: The Fort Lauderdale Owner’s Guide

Replacing a failed Therma-Tru window in Fort Lauderdale typically runs $450 to $1,200 installed, depending on the unit type and glass package, and we can usually complete the swap in a single visit. Most homeowners discover the problem the hard way: condensation fogging between the panes, a sash that won’t stay up, or water staining the drywall after a heavy South Florida downpour. You’re not looking for a sales pitch right now. You’re looking for someone who knows Therma-Tru’s product line well enough to match the part and put it in correctly the first time.

Call (754) 354-3671

We’re an independent service provider, not affiliated with Therma-Tru, but we stock and install Therma-Tru-compatible replacement windows and components across Broward County. If you’re in Fort Lauderdale, Victoria Park, Colee Hammock, or Rio Vista, we’ve likely worked on a house like yours. Spencer Odell has been measuring, installing, and warranting windows across Broward County for the better part of two decades, and he still gets the rough openings right the first time.

Which Therma-Tru Models This Applies To

Therma-Tru builds entry doors primarily, but many Fort Lauderdale homes have matching Therma-Tru sidelite windows, transom windows, and decorative glass inserts alongside those doors. The replacement parts we handle most often fall into three buckets: insulated glass units (IGUs) for Therma-Tru sidelites, complete sash replacements for Therma-Tru casement and awning windows, and hardware kits for the multi-point locking systems Therma-Tru pairs with its door-and-sidelite assemblies.

Here’s the compatibility gotcha most homeowners don’t know: Therma-Tru glass sizes are not universal. Sidelites from the Classic-Craft, Fiber-Classic, and Smooth-Star lines all take different glass dimensions, even when the rough opening looks identical. The only reliable way to identify what you need is to check the etching on the glass corner (it’s faint, usually bottom-left) or match the door’s serial sticker against Therma-Tru’s build sheet. If that sticker is gone, we measure the visible glass, not the frame, because the frame dimensions will lead you to order the wrong unit every time.

As for OEM versus aftermarket: for IGUs, aftermarket glass from a local fabricator often meets or beats Therma-Tru’s original spec at 20 to 30 percent less, and it’s what we recommend for most Fort Lauderdale homes. For sash hardware and locking components, OEM is worth the extra cost because the tolerances on Therma-Tru’s multi-point locks are unforgiving. We stock both so you’re not waiting on a freight order.

Signs Your Therma-Tru Window Replacement Is Failing

• Condensation or haze between the glass panes. The seal on the insulated glass unit has blown. In Fort Lauderdale’s humidity, this is not cosmetic. Once the seal fails, the argon or krypton gas escapes and the window loses real thermal performance. The only real fix is a replacement IGU.
• A sash that slides down on its own or won’t stay open. The balance system or pivot bar is worn out. Therma-Tru uses a few specific balance types across its lines, and matching the wrong one means the sash will work for a few weeks, then start sagging again.
• Water staining on interior drywall below or beside your Therma-Tru door or sidelite. This usually means the corner gaskets or the weep system has failed, not that the glass needs replacing. We see this a lot in older Fort Lauderdale homes where salt air and humidity have eaten through the original seals.
• Crank or single-lever handle turning without the window moving. The operator mechanism is stripped. On Therma-Tru casements, this tends to be a gear-set failure, not a handle failure, so replacing the handle won’t fix it.
• Drafts or hot air leaking around the sash even when it is closed and locked. The weatherstripping is compressed or the sash is out of alignment. Left alone in a Fort Lauderdale summer, this costs you real money on cooling and lets humidity into the home.

Replacement Cost & What’s Included

In Fort Lauderdale, here’s what you should expect to pay for Therma-Tru window replacement work, installed:

• Insulated glass unit replacement (sidelite or transom): $350 to $700 per IGU, including removal, new glazing, and cleanup.
• Complete sash replacement (casement or awning window): $500 to $900 per sash, depending on glass package and hardware condition.
• Balance or operator hardware replacement: $180 to $350 per window, labor included.
• Multi-point lock replacement on Therma-Tru door/sidelite assemblies: $250 to $450 per lock set, depending on whether it’s OEM or aftermarket hardware.

What pushes a job to the top of those ranges: impact-rated glass (required for many Fort Lauderdale waterfront and barrier-island homes under Florida Building Code), oversized units, or rot repair around the rough opening that we discover after pulling the old unit. What doesn’t push the price up: surprise line items at the end. You get a written price before we start, and that’s the price you pay. Every replacement carries our 365-Day Done Right Promise: if it’s not right, we make it right, no argument needed. If a repair fails within the guarantee period, the second visit is free.

DIY or Call Us?

Replacing a Therma-Tru balance or an IGU is not a casual weekend project. Glass units are heavy, and a sidelite IGU can weigh 40 pounds or more. Getting it wrong means a water leak that will not show up until the first big storm, and by then it’s inside your wall. If you want to do something useful before calling, check for air leaks with a damp hand after a rain (water is obvious; air is subtler), note which direction the sash sticks or drops, and take a photo of any etching or stickers on the glass. That information saves a service visit.

But the actual removal and replacement? That’s a job for someone carrying the right glazing tape, the right shims, and the right liability insurance. Our technicians are background-checked, identity-verified, uniformed, photo-badged, and pre-announced by name and photo before they arrive, so you know exactly who is at the door before you open it. Call (754) 354-3671 and we’ll get you scheduled.

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