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AfterTherma-Tru Window Replacement: The Fort Lauderdale Owner’s Guide
We stock and install Therma-Tru window replacements throughout Fort Lauderdale, with most swaps running between $340 and $780 per unit installed, depending on glass package, frame condition, and whether the sash or the full frame is involved. A technician can usually match your existing Therma-Tru unit on the first visit because we carry the common sizes and glass types on the truck. What brings most Fort Lauderdale homeowners to this page is a fogged seal, a crank that finally stripped, or a sash that drops and will not stay up. The unit might have served twenty years along the Intracoastal, then one rainy season the seal lets go and the glass turns milky. That is the typical moment a replacement stops being a future project.
Key Takeaways
- Therma-Tru window replacement in Fort Lauderdale typically runs $340 to $780 per unit installed
- We stock common Therma-Tru sizes and glass packages for same-visit swaps
- Coastal salt air and hurricane-season humidity shorten seal life compared to inland climates
- Both warranty layers registered in writing before the truck leaves your driveway
- Call (754) 310-3589 for a free on-site estimate and model match
Which Therma-Tru Models This Applies To
Therma-Tru built its name on entry doors, but their window lines show up across Fort Lauderdale homes too, often paired with matching door systems from the same build year. The most common series we replace are the Therma-Tru casement and double-hung units from the Allied and Profile lines, along with the sliding windows that went into a lot of 1990s and early 2000s construction. The compatibility gotcha: Therma-Tru windows use a proprietary frame profile in several series, which means a generic sash from a supply house will not seat correctly against the weatherstripping. We measure both the frame throat and the glass thickness before quoting because a unit that is close is not close enough. OEM replacement sashes preserve the original frame and finish, but for units over fifteen years old, a quality aftermarket sash with identical dimensions often makes more sense on price. We quote both on paper, side by side, so you see exactly what you are paying for. TruePane is an independent service provider and not affiliated with Therma-Tru.
Signs Your Therma-Tru Window Replacement Is Failing
- Fog or condensation between the panes: The seal around the insulated glass unit has failed. Once moisture is inside, the only real repair is replacing the IGU or the entire sash.
- Hard cranking or a handle that spins freely: Therma-Tru casement operators use a gear mechanism that strips after years of torque against a swelling frame. A replacement operator can restore function if the frame itself is still square.
- Sash falls shut or will not stay open: The balance springs have lost tension. On double-hungs, this is common after ten to fifteen years, especially with the constant humidity swings Fort Lauderdale gets between summer and winter.
- Visible daylight or water staining at the sill: The weatherstripping has compressed, or the corner seals have degraded. Water intrusion in a coastal climate gets expensive quickly if left unchecked.
- Frame rot on wood-clad units near the coast: Salt air and wind-driven rain accelerate rot on the lower sash corners. Once rot reaches the sill plate, the fix is structural, not just cosmetic.
Replacement Cost & What’s Included
In Fort Lauderdale, a Therma-Tru window replacement runs from about $340 for a stock-size vinyl sash swap to $780 for a full-frame replacement with Low-E impact glass and a fin repair. The spread comes down to three things: whether we can use the existing frame, the glass package you choose, and whether the opening needs any correction from settling or prior bad installs. We give you a written line-item quote before work starts. That quote includes the replacement unit, all labor, disposal of the old sash, and the Keystone Standard: both manufacturer warranty layers registered in writing, durations stated, before the truck leaves the driveway. No surprise line items on the bill. The work carries our 90-Day Done Right Promise, which means if something is not right, we make it right without paperwork fights.
DIY or Call Us?
Taking off a Therma-Tru sash to inspect it is straightforward: unlock it, tilt it in, and lift. That is where most owners should stop. The dangerous parts start when people try to replace balance springs or adjust the frame themselves. High-tension window balances carry enough stored energy to break a finger or send a steel part flying. If you suspect the problem is in the balance system or the frame, call a trained technician. We measure the rough opening twice before we spec anything, because Dale Kessler has spent too many years fixing homeowner repairs that made the original problem worse. The inspection is free. Call (754) 310-3589 and we will match your Therma-Tru unit and give you an exact price on the spot.
FAQs
How long do Therma-Tru windows last in Fort Lauderdale?
Most Therma-Tru vinyl and clad-wood units last 15 to 25 years in Fort Lauderdale’s climate, but seal life typically runs 8 to 12 years before fogging appears. Coastal salt spray and constant humidity shorten that window compared to inland Florida. Call (754) 310-3589 for an assessment of your specific units.
Can a fogged Therma-Tru window be repaired instead of replaced?
No, the insulated glass unit cannot be resealed effectively once moisture is inside. Replacing the IGU or the entire sash is the permanent fix. Call (754) 310-3589 for a quote, estimates are free.
How long does a Therma-Tru window replacement take?
A straight sash swap takes about 45 minutes per window; a full-frame replacement runs 2 to 3 hours. Most Fort Lauderdale jobs are completed in a single visit. Call (754) 310-3589 to schedule.
Do you stock Therma-Tru replacement parts on the truck?
We stock common Therma-Tru sash sizes, glass packages, operators, and balances, along with PGT, CGI, and CWS equivalents, so most replacements happen same-day in Fort Lauderdale. Call (754) 310-3589 with your model details so the technician arrives with the right part loaded.
Call TruePane Windows & Doors in Fort Lauderdale
If your Therma-Tru window is fogged, stuck, or sagging, do not wait through another hurricane season. Call (754) 310-3589 for a free estimate. A live person answers, every time, day or night. We serve Fort Lauderdale and nearby communities, and we have been doing this for over 42 years with the same rule on the whiteboard: if the pane is not true, the job is not done.
Written by Dale Kessler, Owner, TruePane Windows & Doors, serving Fort Lauderdale 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.