Best Impact Window Brands in Florida: Complete Buyer’s Guide

The four primary brands we install and recommend for Florida homes are (1) Custom Window Systems (CWS, owned by privately held Pella Corporation, offering Ocala-built 16-chamber vinyl and Medley-built Hurricane Guard Aluminum—formerly Lawson), (2) ES Windows (ESW, known for sleek architectural aluminum sightlines, oversized glass walls, and strong value), (3) ECO Window Systems (100% heavy-duty extruded aluminum built in Medley, Miami-Dade County), and (4) PGT (Venice, FL maker of WinGuard Aluminum and WinGuard Vinyl). Other reputable Miami-Dade aluminum brands you may see on quotes include CGI (part of the PGT family) and Mr. Glass.

Yes. In 2023, Pella Corporation (which acquired Custom Window Systems in Ocala in 2019) acquired Lawson Industries in Medley, Florida. Lawson's well-known South Florida extruded aluminum impact window and sliding door lines were integrated into CWS and are now manufactured at the same Medley, FL plant as CWS Hurricane Guard Aluminum and CWS Fortify.

In Miami-Dade (175 mph) and Broward (170 mph), every opening requires an active Miami-Dade NOA or HVHZ-approved FL# tested to TAS 201, 202, and 203 under Exposure C or D. For heavy-duty extruded aluminum in the HVHZ, CWS Hurricane Guard Aluminum (formerly Lawson), ES Windows (Elite, Prestige, and Multimax), ECO Window Systems, and PGT WinGuard Aluminum all hold extensive Miami-Dade NOAs. For homeowners wanting vinyl in the HVHZ, CWS Hurricane Guard Vinyl, ESW Elite uPVC, and PGT WinGuard Vinyl also carry HVHZ approvals.

Those counties sit in Florida Building Code Climate Zone 2, where Table R402.1.2 sets a prescriptive U-Factor limit of ≤ 0.40 alongside SHGC ≤ 0.25. Multi-chambered insulated vinyl windows—led by CWS Hurricane Guard Vinyl (made in Ocala, FL), ES Windows Elite uPVC, and PGT WinGuard Vinyl—meet U-Factor ≤ 0.40 prescriptively while never pitting in coastal air. If you prefer slim Black or Bronze aluminum frames from ES Windows, CWS Aluminum, ECO, or PGT, we can also permit them in Climate Zone 2 using a routine Florida R405 whole-home energy calculation.

CGI Windows & Doors (maker of the Sentinel and Estate aluminum lines in Miami/Hialeah) is a sister brand in the PGT corporate family (under MITER Brands); it is a well-built aluminum window that often carries premium pricing similar to PGT. Mr. Glass is an independent Medley, FL extruded aluminum manufacturer competing in the same Miami-Dade segment as ECO Window Systems and CWS Hurricane Guard Aluminum. By carrying CWS, ES Windows, ECO, and PGT, Republic covers every aluminum and vinyl spec at highly competitive factory-direct pricing.

Yes—when matched to the same Design Pressure and glass package, all of them pass the exact same Miami-Dade TAS 201, 202, and 203 laboratory tests. ES Windows is prized by architects and homeowners for narrower, modern frame sightlines and floor-to-ceiling sliding glass doors at a strong price point; ECO Window Systems excels in heavy-wall local Medley aluminum and fast South Florida lead times; CWS combines Pella backing with Ocala vinyl and Medley (formerly Lawson) aluminum; and PGT offers decades of Florida HOA recognition.

Yes, and doing so is often smart engineering. Municipal building inspectors check each opening's individual line item against its circled Miami-Dade NOA or FL# and required Design Pressure (+PSF / −PSF). For example, we frequently pair CWS or ES Windows windows throughout the house with an ES Windows multi-track sliding glass wall on the patio or an ECO decorative double entry door up front.

Across our four window styles and core brands, Republic's published installed average is $800–$1,800 per window (About $900 for a 37×50 fixed window, $1,100 for a 37×63 single-hung, $1,250 for a 53×50 horizontal roller, and $1,300 for a 37×50 casement; oversized or specialty architectural units can run $3,000+), and a typical whole-home installation runs $12,000–$35,000. Impact sliding glass doors average $2,500–$3,500 (2-panel), single French doors $2,800–$4,000, and double French doors $3,800–$7,000. CWS, ES Windows, and ECO typically deliver the strongest installed value per dollar, while PGT often commands a 10%–20% brand-name premium.

Yes. Insurance wind-mitigation inspectors (Citizens Uniform Mitigation Verification Inspection Form OIR-B1-1802) and the My Safe Florida Home $10,000 grant program do not care which brand logo is on the corner of the glass—they verify that EVERY exterior glazed opening (100% of windows, doors, and skylights) is protected by a Miami-Dade NOA or Florida Product Approval (FL#) impact assembly with a passed final municipal building permit.

You can visit Republic Windows, Doors & Roofing at our Fort Lauderdale showroom (2901 SW 3rd Ave, STE 1B, Fort Lauderdale, FL 33315) or schedule a free in-home consultation anywhere in Broward, Miami-Dade, Palm Beach, Martin, St. Lucie, Collier, or Lee County by calling 754-800-4115. We bring physical corner samples, glass makeups, and official NOA / brochure packets right to your home.

Once a window carries an active Miami-Dade NOA or HVHZ FL# for your opening's required Design Pressure, installation quality is what determines whether it leaks, rattles, or fails inspection. Proper wood buck replacement, perimeter polyurethane sealant, sill pan flashing, and exact Tapcon screw spacing per the NOA anchor chart are critical—which is why Republic backs every installation with a lifetime labor warranty for the original owner.

We host the official factory PDF catalogs directly on this page and in our Brochures Library (/brochures), including the CWS Hurricane Guard Aluminum Brochure, CWS Hurricane Guard Vinyl Brochure, ES Windows Elite Line & Multimax Brochures, and the ECO Residential Windows & Doors Catalog.