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AfterTherma-Tru Window Replacement: The Greenacres Owner’s Guide
Therma-Tru window replacement in Greenacres typically runs $520 to $1,140 installed, and we usually complete the swap in a single visit. The part itself is rarely the expensive piece; the labor and the sealing are where the cost lives, and that’s where cheap work shows up first in Florida humidity. Most Greenacres homeowners call us after noticing condensation between panes, a crank that binds, or a window that suddenly won’t lock flush. The failure almost always traces back to a seal, a balance, or a hardware set, not the Therma-Tru frame itself.
We’re an independent service provider, not affiliated with Therma-Tru, but we stock their replacement hardware lines and match aftermarket equivalents where they hold up better in Palm Beach County weather. That distinction matters more than you’d think.
Which Therma-Tru Models This Applies To
Therma-Tru does not build window frames the way it builds doors, which trips up a lot of Greenacres homeowners. The windows in your home may be Therma-Tru branded but manufactured under license, or they may be Therma-Tru entry systems with matching sidelight windows. The compatibility check starts with the label. Look for a small white or silver sticker on the top or side of the moving sash. It will list a series code and a manufacturing date. That date tells us which generation of hardware your window uses.
Older Therma-Tru window lines used balance springs and pivot bars that were discontinued in the early 2010s. The frames are fine. The hardware is not made anymore. In those cases, an OEM replacement is not an option at any price, and a quality aftermarket conversion kit is the only practical route. Newer lines, especially the impact-rated units we see in Greenacres homes built after 2005, use standard cam locks, roller assemblies, and tandem balances that are still available through current channels. We measure the sash width and weight before choosing the replacement, because a balance rated for the wrong sash weight fails within a season. One specific gotcha: Therma-Tru French casement windows have a center mullion that is load-bearing, and some aftermarket hardware kits assume it is decorative. We see that mistake made by other installers a few times a year. It binds the window and strips the crank gear within months.
Dale Kessler has been matching parts to rough openings in Greenacres since before most of the local tracts were built out. The rule he works by: if it is not right in the opening, it will not be right in ten years.
Signs Your Therma-Tru Window Replacement Is Failing
- Condensation between the panes. The seal has failed and moist air is now living inside the insulated glass unit. This does not dry out. It spreads and eventually leaves mineral haze on both interior glass faces.
- A sash that drops when you let go. The block-and-tackle or spiral balances have lost tension. On Therma-Tru units, one failed balance means the other is taking double load and will fail soon after.
- You have to lift the sash to close it fully. The pivot bar has slipped out of the balance shoe or the shoe itself cracked. Forcing it closed only grinds the gear teeth in the operator.
- The window locks but leaves a gap at the meeting rail. The cam lock is worn past tolerance or the keeper shifted. That gap is where Greenacres humidity walks in and where your air conditioning walks out.
- The crank turns without moving the sash. On casement windows, this is almost always a stripped operator gear or a broken torque bar, and it is the most common Therma-Tru hardware failure we replace in Lake Worth Road homes.
Each of these has a specific fix. None requires a full frame job. The trick is identifying which part failed before replacing hardware in the wrong order.
Replacement Cost & What’s Included
| Part | Installed Range in Greenacres |
|---|---|
| Balance replacement (pair) | $180 – $310 |
| Operator gear / crank hardware | $140 – $260 |
| Cam lock and keeper set | $95 – $185 |
| Insulated glass unit (single sash) | $320 – $580 |
| Full hardware conversion (older Therma-Tru lines) | $520 – $1,140 |
The spread depends on whether your unit takes OEM hardware or an aftermarket conversion kit, and on the sash size. A 36-inch casement sash costs more than a 24-inch one for the same repair, because the balances and glass are heavier. We quote parts and labor separately on paper, side by side, so you see exactly what you are paying for before any work starts. Every job is covered by our Done Right Promise, and both manufacturer warranty layers are registered in writing before our truck leaves your driveway. Call (754) 339-0784 for an exact price on your window.
DIY or Call Us?
Window hardware is not high-tension like a garage door spring, but the balance assemblies inside a Therma-Tru sash hold enough stored tension to bite if you force them out with the wrong tool. You can safely do the diagnosis: check for the label, note which side binds, look for cracked plastic at the balance shoe. Taking a sash out and disassembling the balance system is where DIY goes wrong. We have fixed more than one botched attempt that turned a $200 balance job into a $600 rebuild. If you want to try, we will not stop you. If you want it done once, call (754) 339-0784 and we will send a background-checked technician who has done this exact repair in Greenacres more times than we can count.
FAQs
Therma-Tru window frames in Greenacres typically hold up 20 to 30 years if they were installed true and re-caulked on schedule. The hardware and seals fail much sooner, often in the 8 to 12 year range under heat and humidity. What usually dies first is the balance or the crank gear, not the frame. Call (754) 339-0784 to find out which is wearing on your windows.
Some components can be repaired, like a shifted keeper or a gummed operator, but most failed hardware should be replaced outright. A worn cam lock or a stretched balance cannot be brought back to spec. The repair-versus-replace decision is one we make on site, and we will show you the part so you can see for yourself.
Most Therma-Tru hardware replacements in Greenacres are done in 60 to 90 minutes per window, and we complete the job in a single visit. A full insulated glass swap takes a little longer because the sash has to be deglazed and re-bedded cleanly. When you call (754) 339-0784, we will give you a realistic timeframe for your specific window before we schedule anything.
We stock common Therma-Tru balances, operators, locks, and pivot bars on our trucks, plus aftermarket conversion kits for discontinued lines. Specialty glass units are ordered per job, typically arriving in Greenacres within a week. If you are not sure which category your window falls into, describe it to the live person who answers (754) 339-0784 any hour of any day. No voicemail tree, no callback form. It is always a person.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Greenacres 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.