Therma-Tru Window Installation Nationwide | TruePane Windows & Doors

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

We install Therma-Tru window units throughout Fort Lauderdale, and a typical replacement runs between $450 and $1,200 installed depending on the model line, glass package, and whether the opening needs reframing. Most Therma-Tru window installations in our area are completed in a single visit, and we keep the common jamb liners, sash locks, and balance assemblies on the truck. The way owners usually find out a unit has failed is the same every time: a sash that won’t stay up, a draft they can feel on a humid August afternoon, or a lock that no longer lines up square.

Call (954) 280-4413

Therma-Tru built its name on entry doors, but the window lines they’ve produced used specific hardware and balance systems that aren’t universal. Match the wrong part and you’ll be back at it in six months. Match it right, and you won’t think about that window again until the kids are out of college.

Which Therma-Tru Models This Applies To

Most of the Therma-Tru windows we swap parts on in Fort Lauderdale fall into three buckets: the Benchmark vinyl single-hung and double-hung lines, the older Traditions series with wood interiors, and a smaller run of premium fiberglass units that shared hardware with the door division. The fastest way to identify what you have is the laser-etch code on the spacer bar between the glass panes. It’s faint, but it’s there – a series of letters and digits you can read with a flashlight at an angle. The second identifier is the balance shoe inside the side jamb, which is stamped with a load rating in pounds.

Here’s the compatibility gotcha we run into weekly: Therma-Tru changed their balance shoe profile in 2016, and the current shoe does not seat in pre-2016 jamb tracks. You can’t see the difference from across the room. You can see it immediately if you pull the sash and try to drop the new shoe in. We’ve had Fort Lauderdale homeowners bring us a part they bought online that “looked exactly right” and was off by a millimeter. That millimeter is everything.

On OEM versus aftermarket: for glass units, we install OEM wherever the unit is still in production. For hardware – shoes, pivots, locks, tilt latches – quality aftermarket matches from Caldwell and Truth Hardware are often the better dollar. They carry the same load ratings, they’re in stock, and they don’t cost a premium for a brand stamp. We’ll show you both options on paper before anything goes in the opening.

We’re an independent installer and service provider – not affiliated with Therma-Tru – which means we don’t answer to a manufacturer playbook. We answer to the homeowner standing in the doorway.

Signs Your Therma-Tru Window Installation Is Failing

• The sash drops or won’t stay raised. This is a balance assembly that’s lost tension or a shoe that’s cracked. In coastal Fort Lauderdale air, the metal components inside the shoe corrode faster than homes a few miles inland, and a dropped sash is usually the first symptom.
• You feel a draft even with the sash closed and locked. Weatherstripping on Therma-Tru units is a compression fit. After ten years of South Florida heat cycling, it flattens and loses its memory. The window can be mechanically fine and still leak air like a screen door.
• The lock no longer aligns or binds when you try to throw it. Over time, the sash settles and the keeper position drifts. Forcing the lock is how handles snap. If you’re having to muscle it, the alignment is off and the hardware is taking damage every time you use it.
• Condensation or haze between the panes. The seal has failed and the inert gas has leaked out. There is no field repair for a fogged Therma-Tru IGU. The glass unit gets replaced, and the sash and frame stay in place. We see this most in units that get direct afternoon sun, which in Fort Lauderdale means western and southwestern exposures.
• The tilt latches bind or one side won’t engage. The tilt latch spring on Therma-Tru sashes is not particularly robust. If the sash ever came out of the track, the latch was likely the first casualty. Running a window with one good tilt latch puts uneven load on the balance – which cascades into a balance failure if left alone.

Replacement Cost & What’s Included

Here’s the honest pricing picture for Therma-Tru window installation work in Fort Lauderdale:

• Balance shoe and spring replacement: $125 – $225 per sash, parts and labor
• Tilt latch set (both sides): $85 – $150 installed
• Sash lock and keeper replacement: $75 – $140 installed
• Weatherstripping replacement (full perimeter): $160 – $280 per window
• Full sash replacement (glass and frame, same opening): $450 – $900
• Complete window unit replacement (new frame, trim, flashing): $700 – $1,200

What drives the range: whether the jamb liners are still serviceable, whether the sash is a standard size or a custom cut, and whether the opening has water damage from a failed seal that was ignored too long. Your quote is written, line-item, and fixed before we start. No surprises on the invoice, no “well, once we got into the wall” conversations. The Done Right Promise covers the workmanship, and both manufacturer warranty layers are registered in writing before our truck leaves your driveway.

DIY or Call Us?

You can safely check a few things yourself. Confirm the etch code on the spacer bar so you know which series you’re dealing with. Check whether the sash is plumb in the opening – a level laid against the jamb tells you in ten seconds whether the frame has settled. Note which side the draft is coming from. Those three observations save a service call’s worth of diagnosis time.

What we’d steer you away from: pulling the sash on a Therma-Tru unit if you’ve never done it. The balance shoes are spring-loaded, and when a loaded shoe releases unexpectedly, it takes a chunk out of whatever is in its path – usually a hand. “If it is not right on paper, it will not be right on the wall,” and the paper on a balance shoe is its load rating. Get that wrong and you’ve got a window that either won’t stay up or won’t come down without a fight. If you’re unsure, call (954) 280-4413 and we’ll talk it through before anyone schedules a truck.

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