Single hung
Double hung
Horizontal roller
Casement
Sliding glass doors
Impact garage doors
PGT
CGIFree in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Get your free estimateECO Window Systems Window Replacement: The Houston Owner’s Guide
We stock and install ECO Window Systems replacement windows and parts across Houston, with most full-frame replacements running between $900 and $1,900 per opening installed, parts and labor included. A sash or glass unit swap typically lands between $350 and $750. Most owners discover the problem the same way: a window that suddenly won’t lock, condensation that won’t clear from between the panes, or a room that feels ten degrees hotter in July no matter what the thermostat says.
What many Houston homeowners don’t realize is that ECO Window Systems builds several distinct lines, and the part that fits a 2016 single-hung isn’t the same part that fits a 2021 casement. That’s where we come in. Keith Yamada has spent twenty years matching failed parts to the right replacement across the Greater Houston area, and the first thing we do on any call is confirm exactly which ECO series you have before we ever quote a price.
Which ECO Window Systems Models This Applies To
ECO Window Systems manufactures replacement windows across several series, and the compatibility picture matters more in Houston than most places. The ECO 3000 and ECO 4000 vinyl single-hung and double-hung lines are the ones we see most often in Houston homes built from roughly 2005 onward. The ECO 5000 series, which adds a sloped sill and heavier extrusion profile, shows up frequently in newer construction and in homes that specified impact-rated or higher-DP glass packages. We also service the ECO casement and fixed picture lines, though these fail less often than operable sashes simply because they have fewer moving parts.
The most reliable way to identify your ECO window is the small silver or white label on the inside of the frame, usually on the left or right jamb, which carries the series number and the glass package code. If the label is gone or painted over, we look at two details: the balance system style and the sash thickness. ECO moved from a block-and-tackle balance to a constant-force coil balance across most lines around 2012, and the two are not interchangeable. A caliper measurement of the sash extrusion, which runs either 2.75 inches or 3.25 inches depending on series, tells us the rest. When we quote a replacement, we always note whether we’re installing a genuine ECO Window Systems part or, for discontinued series, a quality aftermarket equivalent that matches the original extrusion profile. On current-production ECO units, we use OEM parts so the finish and fit stay identical to what you already have.
Styles & brands we work with








Signs Your ECO Window Systems Window Replacement Is Failing
- Condensation between the panes. The sealed glass unit has lost its argon fill or its edge seal, which in Houston’s humidity shows up as fog that never wipes away. Glass replacement is the only real fix once the seal fails.
- The sash won’t stay open. ECO balance coils fatigue over time, especially in south-facing windows where interior temperatures swing hard. A window that slams shut on its own is a safety issue for kids and pets, and it usually means both balances need replacement.
- Water staining or soft drywall below the window. This points to failed sill flashing or a worn weep system. In Houston’s storm season, a window that doesn’t drain correctly will show itself quickly, and the repair usually means pulling the window to reseat it properly.
- Drafts you can feel with your hand. On ECO units, this is often a compression seal that has flattened from years of sun exposure. West-facing windows in Houston take the worst of it, and the seals on those fail noticeably sooner than on shaded elevations.
- The lock no longer lines up. Over time, slab settling in Houston shifts even a well-installed frame. When the keeper and latch no longer meet, it’s usually a sign the window needs re-shimming rather than force, which can crack the vinyl.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
In Houston, a full ECO Window Systems replacement window installed by us typically runs $900 to $1,900 per opening. A glass-only replacement runs $350 to $750. A sash replacement, where we swap the operable panel but keep your existing frame, lands between $450 and $850. The range comes down to series, glass package, size, and whether the opening needs any frame or sill repair, which older Houston homes with slab settlement sometimes do.
Every price we give is written down before any work starts, and that written price includes the part, the labor, the removal of the old unit, sealing and insulation, interior and exterior trim as needed, and full cleanup. We protect floors with drop cloths and wear shoe covers on every visit, and we take a photo of the clean-up before the crew leaves. The workmanship is covered by our 365-Day Done Right Promise, which means if the finished window isn’t right, we make it right.
DIY or Call Us?
There are a few things an owner can safely check before calling. Confirm the label location for the series number, note which direction the window faces, and mark whether the failure is fog, draft, lock, or balance. That information helps us quote accurately over the phone. What we don’t recommend is pulling a sash or replacing a balance yourself. ECO balance systems are under tension, and a coil that releases unexpectedly can take a finger off. The same goes for removing a glass unit: a sealed unit that slips in a Houston garage or driveway is a mess of tempered glass fragments and a lost argon charge.
If the window is fogged, drafty, or won’t stay open, the smart move is a call to (254) 401-4583. We’ll match the part to your ECO series, give you a written price, and handle the install without leaving a mark on your floors or your day.
FAQs
ECO Window Systems windows in Houston typically hold up for 20 to 30 years on the frames, while glass seal units usually last 10 to 15 years before fogging appears in our heat and humidity. Homes with heavy western exposure often see seal failure closer to the ten-year mark. If your unit is fogged or drafty at year 12, that is normal wear, not a defect. Call (254) 401-4583 and we’ll match the replacement to your series.
Yes, in many cases a failed balance, lock, or weather seal can be repaired without replacing the whole window, and we always price the repair option before recommending a full replacement. A fogged glass unit, though, means the seal has failed, and glass replacement is the fix. We’ll tell you which route costs less in writing before any work begins.
Most sash or glass replacements on ECO Window Systems windows take under two hours once the correct part is on site. A full-frame replacement usually takes a half day per window, including sealing, trim, and cleanup. We’ll give you a time window when we schedule, and the crew works around nap times and pet routines if you tell us what to work around.
We keep the most common ECO balances, locks, and seals for the 3000 and 4000 series on our trucks, so many repair calls are one-and-done the same visit. Special-order glass units for odd sizes or impact-rated packages typically take a week to ten days to arrive. If you’re not sure what you need, call (254) 401-4583 and we’ll help you identify it by the label or the measurements before you spend a dollar.
Written by Keith Yamada, Owner, Lightwell Windows Houston at Lightwell Windows Houston, serving Houston and nearby areas.
Six Reasons Homeowners Choose Lightwell Windows Houston
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
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.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.