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ECO Window Systems Home Additions & ADU: The Orlando Owner’s Guide
If you’re planning a home addition or ADU in Orlando and want ECO Window Systems windows and doors integrated into the build, a complete project typically runs $45,000 – $130,000 installed, depending on square footage, foundation work, and how many ECO units the design calls for. That’s the honest range we quote across Central Florida, and it includes everything from slab to finish trim. Most homeowners start this conversation differently than they expect: they’re not hunting for a window part at all. They’re standing in a room that’s too small, or a garage that floods, or a mother-in-law suite that never got permitted, and the ECO Window Systems product failed because it was never flashed, sealed, or sized correctly for Florida’s humidity in the first place. The part didn’t fail on its own. The install around it did.
We’re Sawyer Remodel Orlando, an independent remodeling contractor serving Orlando and nearby areas. We’re not affiliated with ECO Window Systems, but we install, service, and build around their window and door lines every month. If you’ve got a failed ECO unit inside an addition or ADU, or you’re planning new square footage and want the fenestration done right the first time, this page tells you what actually matters.
Key Takeaways
- Full addition or ADU with ECO Window Systems units: $45,000 – $130,000 in Orlando.
- Most ECO failures in additions aren’t the window itself: they’re flashing, sill pan, or header problems from the original build.
- We stock common ECO sill pans, flashing kits, and retrofit frames on the truck for service calls.
- Written price before any work starts. Photo updates before and after. Live arrival time. That’s The Relay Visibility Guarantee.
Which ECO Window Systems Models This Applies To
ECO Window Systems builds impact-rated and non-impact vinyl and aluminum windows and sliding glass doors, and most of what we see in Orlando additions falls into two buckets: their single-hung and horizontal roller lines for bedrooms and living spaces, and their multi-panel sliders for Florida rooms and ADU great rooms. If your unit has a sticker on the inside track or the top of the sash frame, that sticker carries the series code and the manufacturing date. If the sticker’s gone, measure the rough opening width and height, then measure the visible glass, not the frame. That glass dimension is what tells us whether the original installer ordered the right size or squeezed a stock unit into a custom opening, which happens more often in Orlando additions than anyone in this trade wants to admit.
For replacement parts, OEM ECO components like balance assemblies, roller carts, and weatherstripping are what we prefer when the unit is under ten years old, because the tolerances still match. After that, we’re honest about the math: for out-of-warranty units in Florida, a quality aftermarket stainless roller or a heavier-gauge sill pan often outlasts the original part. We won’t push aftermarket on a unit that’s still clean and square. We also won’t put another vinyl shoe on a sill that’s been sitting wet for six hurricane seasons.
Styles & brands we work with
Signs Your ECO Window Systems Home Additions & ADU Is Failing
- Condensation between the panes every morning from March through October. The seal assembly has failed. In Orlando’s humidity, once that argon or krypton fill escapes, the unit fogs permanently and the glass becomes a thermal hole.
- You can see daylight or feel a draft at the bottom corners. That’s weatherstripping compression or a sill that’s out of level. Water follows the same path, which means your subfloor is taking on moisture you can’t see yet.
- The window or slider doesn’t lock without lifting or shoving the sash. The frame has racked, or the keeper was installed in the wrong position. Forced locking warps the sash and kills the rollers.
- Water stains on the drywall under the window or along the floor track. In an addition or ADU, this usually means the sill pan was never installed, or the pan ends weren’t dammed. The window is fine. The rough opening is leaking.
- You hear the sashes rattle when the washer spins or a truck passes. Balance springs have lost tension or the jamb liners are worn. Ignored, the sash drops hard enough to crack the frame corner.
See the difference
Before
After
Before
After
Before
AfterReplacement Cost & What’s Included
In Orlando, a full home addition with ECO Window Systems windows and doors lands between $45,000 and $130,000, and here’s what moves the number. Foundation and slab work, the number and size of ECO units, roof tie-in complexity, and whether we’re converting existing space or building new. A garage conversion to an ADU with two ECO windows and a slider runs lower in that range; a second-story addition with impact-rated glass runs higher.
| Project Type | Orlando Price Range |
|---|---|
| Home Addition (with ECO Window Systems units) | $45,000 – $130,000 |
| ADU Construction (full build, new foundation) | $90,000 – $220,000 |
| Garage Conversion to ADU | $30,000 – $80,000 |
| ECO Window Replacement (per unit, installed) | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
Every quote includes a written line-item price before we pick up a tool, the permit pulled and the inspection passed, and the 365-Day Done Right Promise in writing. If the window flashing or the trim work isn’t done right, we make it right. For a full year. No argument.
DIY or Call Us?
Replacing a torn piece of weatherstripping or cleaning out the weep holes on your ECO slider is something you can do with a flathead and some patience. If you’ve got fogged glass, a racked frame, or water intrusion at the rough opening, stop. That’s a structural problem. I’ve watched homeowners in College Park pull a window out of a load-bearing wall on a Saturday morning and discover the header was never sized right in the original addition. Good work doesn’t need a speech, it just needs to hold up. And a header that’s undersized by two inches doesn’t hold up. Call (850) 809-0306 and we’ll put eyes on it before it becomes a beam repair.
FAQs
Figure twelve to eighteen years for the insulated glass seal, and twenty-plus for the frames themselves if they were installed with proper flashing and sill pans. Florida humidity and direct sun shorten the glass life. Call (850) 809-0306 and we’ll tell you honestly whether your unit is worth rebuilding or replacing.
If the frame is square and dry, we can often replace the balance assembly, rollers, or weatherstripping without pulling the whole unit. If the glass seal is blown or the frame is racked, replacement is the smarter money. Estimates are free and in writing.
A garage conversion runs eight to twelve weeks. A full ground-up ADU runs four to six months, and we give you a live arrival time and photo updates before and after every major phase, because the schedule matters as much as the price.
We stock common ECO sill pans, flashing kits, weatherstripping, roller carts, and balance assemblies, so a service call usually wraps in one visit. If you need a full replacement unit, we measure the rough opening and order the exact size. Call (850) 809-0306 for a free estimate.
If you’re planning an Orlando home addition or ADU and you want ECO Window Systems units installed without the leak-prone shortcuts we keep fixing, or you’ve got a failed unit that needs service now, call us at (850) 809-0306. You’ll get a written price, a live arrival time, and a crew that shows up background-checked and in uniform. We’ll also be glad to source cabinetry and countertop materials from brands we trust, including KraftMaid, Cambria, and Silestone, as part of the build. The estimate is free, the price doesn’t change at the door, and the work is guaranteed for a year.
Written by Luca Romano, Owner & Lead Contractor, Sawyer Remodel Orlando at Sawyer Remodel Orlando, serving Orlando and nearby areas.
