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Therma-Tru Energy-Efficient Windows in Coral Gables: What to Know First
Therma-Tru energy-efficient window repair and replacement in Coral Gables typically runs $340-$890 per opening depending on the series, glass package, and whether the sash or full frame needs work. Most jobs take one visit, and we give you a written line-item price before any work begins. As an independent Therma-Tru service provider, TruePane Windows & Doors fixes what’s failing and tells you honestly when a window has hit the end of its useful life.
This page is for Coral Gables homeowners who own Therma-Tru windows or doors and are tired of drafts, fogged glass, or energy bills that climb every August. If that’s you, call (954) 507-3613. A live person answers, because Dale Kessler has never believed in making a homeowner talk to a machine before they can talk to a glazier.
How Therma-Tru Products Fail - and How We Fix Them
Therma-Tru built its reputation on fiberglass entry doors, but its window lines have specific weak points we see repeatedly in Coral Gables. Here’s what actually goes wrong, and what we do about it.
- Therma-Tru Classic-Craft window frames lose their seal at the sash corners. The fiberglass composite expands and contracts differently than the glass unit under Coral Gables sun loads, and after eight to ten years the corner joints start to open. Water gets in, the gas leaks out, and you get condensation between the panes. We reset the sash corner, replace the glazing bead, and set a new insulated unit when the original has failed.
- The Low-E coating on older Therma-Tru double-pane glass breaks down in direct south exposure. Homes along Old Cutler Road and Cocoplum with unshaded south windows see this first. The coating oxidizes, the glass takes on a hazy cast, and you lose the heat rejection you paid for. We re-glaze with a fresh Low-E insulated unit rated for Miami-Dade wind loads.
- Therma-Tru sliding patio doors bind in the track during humid months. The rollers are not the problem. It’s the fiberglass frame swelling against the track, which is a tolerance issue Therma-Tru never fully resolved on certain production years. We mill the track channel slightly, install higher-capacity rollers, and the door glides again.
- Argon gas fills dissipate faster on Therma-Tru units with original foam spacers. The foam, not the sealant, is the failure point. Once enough gas escapes, the window’s U-factor rises and you feel radiant heat standing three feet away. Replacement with a warm-edge stainless spacer and fresh argon restores the original performance.
- Weepholes on Therma-Tru frame sections clog with Coral Gables pollen and lime dust. This one sounds minor until water backs up into the track and wicks into the drywall. We clear the drainage channels, verify slope, and test with a water spray before we call the job done.
Our Therma-Tru Energy-Efficient Windows Process
We don’t send a salesperson with a binder. We send a glazier with a tape measure and a moisture meter.
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Call and diagnosis. You call (954) 507-3613, tell us what the window is doing, and we schedule a time that works. Live person, every time.
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On-site measurement and glass inspection. We measure every opening twice, check the glass pack, read the existing spacer type, and look at the seal condition up close.
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Written quote on paper. We show you OEM Therma-Tru parts and quality aftermarket alternatives side by side, with prices and warranties stated in writing. You decide. No pressure.
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The repair or replacement. Background-checked, uniformed techs do the work. We protect the floor, remove the old unit cleanly, set the new one plumb and level, and seal it to Coral Gables exposure standards.
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Water test and warranty registration. We run a water spray test before we pack up. Then we register both manufacturer warranty layers in writing, with durations stated, before the truck leaves the driveway. That’s The Keystone Standard.
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The Done Right Promise. If something isn’t right within 90 days, we come back and make it right. No paperwork fight, no argument.
What Therma-Tru Energy-Efficient Windows Costs in Coral Gables
Most Therma-Tru work we do falls into clear price bands. Here’s what we see across Coral Gables, from the Gables by the Sea to the Biltmore district.
- Single sash re-glaze (insulated Low-E unit, new glazing bead): $340-$520
- Full window rebuild (sash reset, frame seal, new glass pack): $450-$680
- Sliding patio door track repair with new rollers: $280-$490
- Complete Therma-Tru window replacement (standard sizes, energy package): $620-$890 per opening
- Argon gas refill and spacer upgrade (per unit): $180-$310
Price moves with glass size, frame condition, second-story access, and whether the original Therma-Tru frame can be saved. A window sweating in the corner is usually repairable. A frame that’s rotted at the sill is not. We’ll tell you which one you have. Call (954) 507-3613 for a free estimate with numbers on paper before you decide anything.
Why Coral Gables Homeowners Call TruePane Windows & Doors for Therma-Tru Work
We’ve been doing this since 2008 across the communities we serve, and Dale Kessler started TruePane in 2008 because he kept seeing homeowners stuck between voided warranties and installers who wouldn’t answer the phone. That’s not how we work. Every Therma-Tru job carries the Done Right Promise, and both warranty layers get registered in writing before our truck leaves your driveway.
Our techs know Therma-Tru’s quirks, and we also service PGT, CGI, CWS, and ES Windows, which matters in Coral Gables because many homes have mixed brand lines from different remodel years. One crew, one standard, one bill. Background-checked techs. Uniformed. On time. And if something goes wrong, a live person answers the phone at (954) 507-3613, day or night. If it is not in writing, it is not a guarantee - it is just a conversation.
FAQs
Most Therma-Tru energy-efficient windows with failing seals, fogged glass, sticking sashes, or worn hardware can be repaired without pulling the frame. Replacement is the right call when the frame itself has rotted, warped beyond tolerance, or been damaged by water intrusion. We’ll show you the evidence either way before you spend a dollar. Call (954) 507-3613 and we’ll assess it honestly.
Not when the repair uses OEM or manufacturer-spec parts and the install meets Therma-Tru’s stated tolerances. That’s exactly how we work. The Keystone Standard means we register both warranty layers in writing before we leave, so there’s no question later about what’s covered and for how long. If you have the original paperwork, bring it; if you don’t, we’ll help you pull the records.
A drafty Therma-Tru window usually means a failed seal, a worn weatherstrip, or a sash out of square. Repairs run $280-$520 per window in most Coral Gables homes. A full replacement with an energy-efficient Low-E insulated unit runs $620-$890 per opening. Exact numbers depend on size and access, and our estimates are free with prices on paper.
Most Therma-Tru repair and replacement jobs in Coral Gables are completed in a single visit once the parts are in hand. Standard glass packs and hardware are typically available within a few days. We’ll give you a firm date when we quote, and we’ll be there when we say.
Yes. We check glass pack condition, spacer type, seal integrity, and frame square, then tell you exactly where the heat gain is coming from and what it costs to fix. No $600 blower door theater. Just a glazier’s read on your windows, free with any repair estimate.
Written by Dale Kessler, Owner, TruePane Windows & Doors at TruePane Windows & Doors, serving Coral Gables 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.



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