







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why San Antonio Homeowners Choose ECO Window Systems Construction
We provide San Antonio Eco Window Systems service for construction, repair, and replacement across the area, from small insulated glass swaps to full kitchen and bathroom remodels where the windows come out and new ECO units go in. What separates our work is that we see these windows the way a remodeling contractor does: as part of a wall assembly, not a standalone product. We write the price down before any work starts, we use OEM or properly matched parts, and every ECO Window Systems project carries our 365-Day Done Right Promise. If it’s not done right, we make it right.
We want to be direct about one thing up front, because homeowners deserve clarity: Elmstead Remodeling San Antonio is an independent Schertz Eco Window Systems service provider as well, not an authorized or factory-backed dealer. That independence means we recommend what actually makes sense for your house in San Antonio’s heat, storms, and limestone, without a manufacturer script behind us. Call (432) 233-0976 to talk through what you’re seeing.
Why Trust Elmstead Remodeling San Antonio for Your ECO Window Systems Construction?

Our crews in San Antonio know the ECO 3000 Series Double-Hung, 5000 Series Casement, 400 Series Sliding, and 700 Series Picture lines from the inside out. We carry replacement glazing, balance assemblies, and weatherstripping for these models, and we’ve rebuilt enough ECO sashes and frames to know which failures are worth repairing and which ones are past the threshold. That decision matters: a straight frame with a dead seal gets new glass and spacer bars. A bowed frame with failing corner welds gets recommended for replacement, and we’ll explain why with the window in front of you.
Graham Stein, our owner here in San Antonio, learned construction at Los Angeles Trade-Technical College and has spent decades framing, finishing, and fixing the parts of a house that fail quietly. One thing he does on every ECO Window Systems project, no exceptions: he writes the full scope of work down before a single tool leaves the truck. The written price you sign is the price you pay. No line items added after demo day. That’s the Cedarwell Care Promise, and it governs everything we touch, including the shoe covers and drop cloths that go down before any window work starts.
Write it down, price it once, do it right.
Styles & brands we work with







Common ECO Window Systems Construction Problems We Fix in San Antonio
- Cloudy insulated glass units from failed seals. In ECO 3000 double-hungs and 5000 casements, the seal between the panes degrades over years of San Antonio’s thermal swings. Once moisture gets in, the glass fogs and the desiccant inside the spacer bar is exhausted. The fix is a new dual-pane unit with fresh spacer bars, not a surface cleaning that lasts two weeks.
- Warped or stuck sashes on south-facing ECO casements. San Antonio’s sun loads the west and south sides of a house hard. On ECO 5000 casements, hours of direct exposure cycle the vinyl enough that the sash can bow slightly and bind in the frame. We see it most often in Terrell Hills and Alamo Heights, where the lots are tight and the afternoon sun never quits. Usually we’re realigning operator arms and resetting the sash; sometimes the extrusion itself is too far gone to save.
- Bowed frames and failed corner welds on ECO sliding windows. The 400 Series sliding line is dependable, but storm-driven water against the lower track can work its way behind the frame over time. We see corner welds crack and the frame bow outward. Patching that with caulk buys months, not years. Honest answer is replacement when the frame itself has moved.
- Cracked glazing beads and deteriorated weep gaskets on older ECO 400 series. The glazing bead that holds the glass in place gets brittle with age and UV exposure. When it cracks, the pane can rattle, and when the weep gasket below the sill fails, water that should drain out instead pools under the window. Both are affordable fixes if caught before the frame saturates.
- Impact window retrofits for homes on exposed lots. San Antonio sits on the edge of hail alley, and we regularly replace standard ECO windows with impact-rated units on homes where the roofline faces open ground. The upgrade is substantial, but for a family living with kids and pets, laminated glass holds together on impact and keeps the envelope secure.
ECO Window Systems Parts & Our Repair-vs-Replace Approach

Our repair-vs-replace rule for ECO Window Systems is simple: if the failure is in a replaceable part, we replace that part. That means OEM glazing, balances, and weatherstripping for the 3000, 400, 5000, and 700 series. If the frame itself holds structural damage, a patch on obsolete extrusion is a temporary gesture, not a remedy. In those cases we recommend a full replacement with a modern ECO-equivalent, matched to your existing opening and millwork where possible.
We stock replacement glass units, spacer bars, desiccant, balance cartridges, and weatherstripping locally for the most common ECO models, so most service calls don’t sit waiting on a freight shipment. If your window’s glass is fogged and the frame is still square, call (432) 233-0976 for an exact quote. Estimates are free, and the written price covers the scope you sign.
Our ECO Window Systems Service Process – Step by Step
- 1
Diagnosis. We pull the failing ECO sash or inspect the frame in place, identify the specific component that failed, and show you what we found. No jargon, no rush. If it’s a 5000 casement with a separated lower seal, you’ll see it.
- 2
Repair or install. For a repairable unit, we rebuild the sash with new spacer bars and desiccant, realign operator arms and tracks, and reset the frame. For a full replacement, we set the plumb and level, shim to the rough opening, flash the pan, and install new ECO or ECO-compatible glazing.
- 3
Test. We cycle the sash through its full range, check the seal line, verify drainage through the weep system, and run water on the exterior where a flashing repair was involved. If it doesn’t behave like a new window, it’s not done.
- 4
Warranty & follow-through. Every completed ECO Window Systems project carries our 365-Day Done Right Promise. Your cleanup is photographed before we leave, and the price you paid is the price on the sheet.
See the difference
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AfterECO Window Systems Products We Service & Install in San Antonio
We work on the ECO 3000 Series Double-Hung, the 5000 Series Casement, the 400 Series Sliding, and the 700 Series Picture windows. That covers most ECO units installed in San Antonio homes from the post-war ranch stock to newer slab-on-grade builds, including ECO Window Systems Construction in Fair Oaks Ranch, TX. We stock common replacement components locally for fast turnaround, and for full-frame swaps we order units sized and glazed to your elevation and exposure, not just pulled off a shelf.
We Also Service These Brands
Our San Antonio crews work across brands every week. Alongside ECO Window Systems, we install and service KraftMaid and Wellborn cabinetry, Cambria and Silestone countertops, and Kohler fixtures on kitchen and bath remodels. If your ECO windows come out during a full kitchen rebuild, we’re the same crew providing General Contractor services like setting the counters and resetting the backsplash.
FAQs – ECO Window Systems Construction Service in San Antonio

Yes. If the frame is square and the operator hardware is sound, we rebuild the sash with a new sealed dual-pane unit, fresh spacer bars, and desiccant. That typically runs $800 – $2,500 depending on glass size and glazing. If the frame is bowed or the corner welds have cracked, we’ll show you and recommend replacement instead. Call (432) 233-0976 to schedule a look.
Heat and humidity load the balance cartridges and weatherstripping. Over the long San Antonio summer, the balance springs fatigue and the sash loses its lift, which makes the window feel heavy. A qualified service tech can replace the balances and re-lubricate the tracks, which usually restores smooth operation without replacing the window.
Often they do, especially if the home sits on an exposed lot with open western or northern exposure. Impact-rated glazing holds together under hail and storm debris, and it upgrades the envelope’s security. The work is in the $8,000 – $25,000 range for a whole-home retrofit, and we’ll talk honestly about whether your existing openings can accept the added frame depth before any work is priced.
In our experience it’s usually the flashing or weep system, not the glass. Water that leaks at the bottom sill is generally a drainage problem: the weep gaskets are plugged, or the pan flashing below the window wasn’t sloped properly. We diagnose it by running water on the exterior and watching inside. For a quote, call (432) 233-0976.
No. We can replace just the insulated glass unit in most cases, as long as the frame is undamaged and the glass channel is intact. You’ll see the cost difference immediately. A full insulated glass replacement runs $800 – $2,500, far less than replacing the whole 700 Series picture window.
Exact pricing depends on the scope, the number of openings, and whether we’re replacing glass or full frames. Our range is transparent and written down before any work starts:
| Service | Price Range |
|---|---|
| ECO window replacement labor (per opening) | $4,500 – $15,000 |
| ECO insulated glass unit replacement | $800 – $2,500 |
| Impact window installation (ECO-compatible) | $8,000 – $25,000 |
| Full kitchen remodel with ECO window swap-out | $14,000 – $45,000 |
You’ll never see a change order because the crew arrived and found something. We find it first, we write it down, and the price you sign is the price you pay. Call (432) 233-0976 for an exact quote. Estimates are free.
No, we are an independent ECO Window Systems service provider in San Antonio. We are not factory-backed or authorized by the manufacturer. Our independence means we repair what’s repairable and recommend replacement only when the frame or glazing truly calls for it, without a sales quota on the other end of the phone.
For repairable components, yes. We use OEM glazing, balances, and weatherstripping wherever those parts are the right fix. When a frame has structural damage, we recommend full replacement with a modern ECO-equivalent rather than patching obsolete extrusion that will fail again.
Most single-window repairs are done the same day once we’re on site. Full-frame replacements take longer, depending on the number of openings and whether we’re working inside a finished kitchen or bath. We’ll give you a written schedule with the written price, and we’ll stick to it.
That depends on the age of the window and the terms of the original warranty. On newer ECO units where the manufacturer warranty is still active, our parts and methods are chosen to be warranty-neutral, meaning we don’t do anything that a factory service manual would reject. On older units with expired coverage, the warranty question is usually moot, and we’ll tell you honestly which situation you’re in.
Book Your ECO Window Systems Service in San Antonio, TX
The quickest way to get an exact price for your ECO Window Systems repair or replacement is to call (432) 233-0976. We’ll answer live, ask what you’re seeing, and get a service visit scheduled. You’ll always get a written price before any work begins, and the finished project carries our 365-Day Done Right Promise, backed by the Cedarwell Care Promise.
Written by Graham Stein, Owner at Elmstead Remodeling San Antonio, serving San Antonio and the surrounding area since 2005.


