Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
ECO Window Systems Window Replacement: The Lighthouse Point Owner’s Guide
ECO Window Systems window replacement in Lighthouse Point typically runs $340-$780 per opening installed, depending on series, glazing package, and whether the opening requires impact-rated certification. We stock ECO Window Systems-compatible sashes, balances, and hardware for same-day replacement on most residential series, and we carry the full frame replacement inventory for the 5000 and 7000 lines in our Lighthouse Point warehouse. Most homeowners discover the failure first as a draft they cannot locate, then as condensation between panes, or as a sash that no longer stays open without a prop.
Which ECO Window Systems Models This Applies To
ECO Window Systems produces three residential lines you’ll find in Lighthouse Point homes: the 5000 Series (vinyl impact), the 7000 Series (aluminum impact), and the 3000 Series (non-impact vinyl). The 5000 and 7000 dominate canal-front properties near the Lighthouse Point Marina, where the Florida Building Code requires HVHZ certification.
To identify your series, check the spacer bar between glass panes or the balance cover on the sash jamb. The 5000 carries a 3-1/4″ frame depth; the 7000 runs 3-1/2″ with a thermally broken sill. The 3000 is narrower at 2-7/8″ and cannot accept impact glazing retroactively. This matters because we have seen Lighthouse Point homeowners order 3000 sashes believing they can upgrade to impact glass later. They cannot. The frame extrusion lacks the reinforcement pocket.
We source OEM ECO Window Systems parts direct from their Hialeah distribution center, though for certain balances and weatherstrip profiles we specify an aftermarket equivalent from Amesbury or Caldwell that meets the original spec at lower cost. We note the substitution on your written quote before you approve it.
Signs Your ECO Window Systems Window Replacement Is Failing

- Sash drops or won’t stay open. The coil balance system has lost tension. In the 5000 Series, this is usually a broken balance shoe or a rusted pivot bar from salt air exposure near the Intracoastal. The sash weight exceeds what the remaining balance can carry.
- Fog between glass panes that won’t wipe away. The insulated glass unit (IGU) seal has failed. South Florida’s thermal cycling, 90°F days to 72°F conditioned interiors, accelerates seal degradation. ECO Window Systems IGUs carry a 20-year glass warranty, but the labor to swap the sash is not covered.
- Visible frame distortion or corner separation. Vinyl frames in direct sun without adequate overhang can exceed 140°F surface temperature. The 5000 Series uses a heat-stabilized compound, but after 12-15 years near the water, we see corner weld stress cracks that let water into the wall cavity.
- Hardware operates with grinding or requires two hands. The multipoint lock mechanism has corroded. ECO Window Systems uses a stainless steel multipoint on the 7000 and a zinc alloy on the 3000. The zinc alloy fails predictably in Lighthouse Point’s salt air within 8-10 years.
- Air infiltration at the meeting rail or sill even when locked. The pile weatherstrip has compressed or the bulb seal has torn. Standard replacement weatherstrip from the hardware store rarely matches the original compression spec; the wrong profile actually increases leakage.
Before
AfterReplacement Cost & What’s Included
| Scope | Price Range (Lighthouse Point) |
|---|---|
| IGU sash replacement (5000/7000 Series) | $340-$520 |
| Full frame replacement, standard opening | $580-$780 |
| Balance hardware replacement (both sides) | $180-$260 |
| Multipoint lock mechanism | $220-$340 |
| Weatherstrip replacement, per sash | $95-$140 |
These prices include removal, disposal, new parts, installation, and sealing to current Florida energy code. What drives the range: size of the opening, whether the existing frame is square within 1/8″, and whether we discover rot in the subsill during removal. We document the subsill condition with photos before we proceed; you see what we see. Every replacement carries the 365-Day Done Right Promise under the Haven Standard. If the sash doesn’t seat clean, we come back and make it right.
DIY or Call Us?

An owner can safely check the model label and measure the visible glass dimensions. That is where DIY should stop for most ECO Window Systems replacements. Removing a sash with a failed balance risks dropping 40-80 pounds of glass and vinyl; the 7000 Series aluminum sash with impact glass is heavier than it looks. Reinstalling without shimming to plumb puts torsion on the new balance that guarantees early failure.
IGU replacement specifically requires a clean-room environment for seal integrity. We have seen Lighthouse Point homeowners order the glass online, install it in their garage, and develop fog six months later because dust compromised the seal during assembly. The written price we give you includes the documented photo record and the warranty. Call (754) 600-8907 to schedule your free estimate.
FAQs
IGU seal failure typically appears at 12-18 years in salt-air exposure; frame and hardware usually reach 20-25 years with proper maintenance. The 5000 Series vinyl weathers better than the 3000 in direct sun. Call (754) 600-8907 for an exact quote on replacement, estimates are free.
Hardware, balances, and weatherstrip can be repaired or replaced individually; fogged IGUs and cracked frames require sash or full frame replacement. We assess each opening and note what can be repaired versus what needs replacement on your written scope. Call (754) 600-8907 for an exact quote, estimates are free.
A sash replacement takes 45-90 minutes per opening; full frame replacement runs 2-3 hours including trim and sealing. We schedule one opening or the whole house, your preference, and we arrive with the parts already on the truck. Call (754) 600-8907 to schedule your free estimate.
We stock 5000 and 7000 Series sashes, balances, and multipoint hardware at our Lighthouse Point facility; 3000 Series parts arrive next-day from Hialeah. We verify your series during the measured survey so the crew arrives with the correct inventory. Call (754) 600-8907 for an exact quote, estimates are free.
Sightline Windows & Doors Lighthouse Point is an independent service provider, not affiliated with ECO Window Systems.
Written by Sonia Raman, Owner, Sightline Windows & Doors Lighthouse Point at Sightline Windows & Doors Lighthouse Point, serving Lighthouse Point and nearby areas.










Before
After
Before
After
Before
After