Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across Key West
Window replacement in Key West means meeting a code standard no other US city enforces: Miami-Dade NOA certification inside the High-Velocity Hurricane Zone. You cannot put a standard Florida window in a Key West house and expect it to pass inspection, satisfy HARC, or survive the next named storm. TruePane Windows & Doors handles the full picture: the NOA paperwork, the HARC approval in Old Town, the marine-grade hardware, and the install done to spec. Call (754) 238-2201 for a free estimate, and you’ll get a written line-item quote with the certifications listed in plain print.
Why TruePane Windows & Doors Is Key West’s Preferred Window Replacement Company
We have been doing window work in Key West long enough to know what the salt air does to an aluminum frame in five years and what HARC does to a homeowner who installs the wrong muntin profile. Dale Kessler founded TruePane in 2008 on a rule that never left the shop wall: if the pane is not true, the job is not done. That rule governs every jalousie tear-out on a Conch house in Old Town and every impact window we set in a Marathon raised foundation.
Key West customers call us because a live person answers the phone, not a call tree. They call because our technicians are background-checked, uniformed, and trained to measure every opening twice before ordering anything. They call because both warranty layers get registered in writing before the truck leaves the driveway. That is The Keystone Standard, and it has not changed in years of combined craft tradition and community service.
We are not the cheapest bid in Key West. We are the last window call most homeowners need to make. The Done Right Promise backs every install with no paperwork fights and no arguing. If it is not done right, we make it right. That is the deal.
Our Window Replacement Services in Key West
Full Frame Replacement
Most pre-1930 Conch houses in Key West need a full tear-out, not an insert. The original jalousie frames and sashes cannot hold an impact-rated unit, and the framing behind them has usually been breathing salt spray for a century. Full frame replacement pulls everything down to the rough opening, lets us re-flash with marine-grade tape, and sets a properly anchored window that meets HVHZ wind-load requirements. In Key West, this is the standard repair path for any window that still shows transom rot, soft sills, or original louvered hardware.

Insert Window Replacement
When the existing frame is square, dry, and structurally sound, an insert replacement keeps the interior trim intact and installs a new energy-efficient sash inside the old opening. This works well on Key West homes built after the 1980s that already have hurricane-rated frames but tired glass or failing weatherstripping. The catch is that inserts still have to carry NOA documentation, and HARC still has to approve the profile in the historic districts. We pull those approvals before we order anything.

Storm Window Replacement
Key West sits at the apex of the Florida Keys hurricane corridor. Sustained wind exposure here rivals anywhere people actually live in the US, and every storm-rated window has to carry a Miami-Dade NOA. Storm window replacement for us means impact-rated glass, fusion-welded frames, and stainless hardware that will not pit in five years of salt spray. We replace a lot of standard coastal-grade aluminum that looked fine on paper and failed early because the hardware was not marine-spec.

Energy-Efficient Upgrade
Key West sun is relentless, and the original jalousie windows leaked air year-round. A modern Low-E impact unit cuts solar heat gain and drops the cooling load considerably, which matters when your electric bill runs high eleven months of the year. We quote energy-efficient options from several manufacturers side by side so you see the actual rating numbers, not just the sales language. The upgrade only counts if the wind-load certificate is attached; otherwise you have a cool room and a voided insurance claim.

Historic Window Restoration
In HARC-designated Old Town blocks, a code-compliant impact window with the wrong muntin profile or frame color can get red-tagged after the fact. Historic window restoration in Key West means replicating 19th-century divided-light patterns, true white or approved color frames, and the narrow sightlines that keep a Conch house looking like a Conch house. We handle the HARC pre-approval package as a standard line item, because we have seen the commission order removal on work that had already passed a building inspection.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Key West
TruePane is an authorized installer for CGI, CWS, and ES Windows, all of which carry Miami-Dade NOA listings that meet Key West HVHZ code. We also install ECO Window Systems for clients who need a specific energy spec without leaving the impact-rated envelope. Because we stock local parts for door and window lines common in the Keys, we can often pull a hardware replacement or weatherstripping match faster than an out-of-town shop ordering blind. We quote the brands side by side on paper so you see exactly what each line costs and what warranty it carries.
Common Window Replacement Problems We See in Key West Homes
- Jalousie windows that cannot meet code. The louvered glass assemblies that came stock on pre-1930 Conch houses throughout Old Town cannot be made hurricane-rated. Homeowners trying to meet current insurance requirements end up doing a full tear-out, and that is the honest answer before you spend money on a retrofit that will not pass.
- Salt-driven aluminum failure. Key West is entirely surrounded by saltwater with no inland buffer. Standard coastal-grade frames pit at the corners and lose structural bite in five to seven years. We use marine-grade hardware and stainless fasteners as the default here, not an upsell.
- HARC reversals after install. The Historic Architectural Review Commission has reversed permitted work after the fact when the muntin pattern or frame color did not match the district’s approved Conch house profiles. Product pre-approval with the commission is part of the job, not a side errand.
- Improper flashing around old transoms and sills. Decades of wind-driven rain and salt leaves the wood behind the old sash soft and black at the edges. Skipping the re-flash means the new window is set into framing that is already moving. We re-flash every full tear-out before the new unit goes in.
Pricing for Window Replacement in Key West, FL
| Service | Typical Key West Price Range |
|---|---|
| Full frame tear-out and impact replacement (per window) | $1,200 - $2,800 |
| Insert window replacement (per window) | $800 - $1,600 |
| Storm window / impact-rated casement (per window) | $1,100 - $2,400 |
| Historic HARC-approved restoration window (per unit) | $2,000 - $4,500 |
| Energy-efficient Low-E upgrade in existing NOA frame | $600 - $1,300 |
These ranges reflect the Key West market, the HARC approval process in Old Town, and the marine-hardware upgrades this climate requires. A cheap quote that leaves out the NOA sheets, HARC pre-approval, or stainless hardware ends up costing more when the commission or the insurance company asks for the paperwork. We offer fixed pricing with no change orders, and we put the warranty durations in writing before the truck leaves the driveway. The estimate is free. Call (754) 238-2201 for an exact quote on your openings.
We Also Serve Cities Near Key West
We run crews to Big Pine Key, Marathon, Key Colony Beach, and Tavernier on a regular schedule, and we carry the same marine-grade product lines and NOA documentation everywhere the HVHZ applies. If you need Window Replacement outside Key West’s city limits, the standard stays the same. Learn more about our Window Replacement in Key West coverage and schedule a free estimate.
Serving Key West, FL - Our Local Coverage Area
We’re based in the Key West area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Window Replacement in Key West
Yes. In Key West, any window replacement that changes the opening or the product type requires a city building permit, and in HARC-designated districts you also need a certificate of appropriateness before the permit is issued. We pull the HARC package as a standard line item and include the NOA sheets with the permit filing. Call (754) 238-2201 and we can confirm which of your openings fall under HARC review before you spend a dollar.
No. Jalousie windows cannot be made hurricane-rated under HVHZ requirements, and retrofitting a storm panel over them leaves an assembly that fails code. The jalousie itself has no NOA rating, so the insurer treats the whole opening as an unprotected wind breach. Full frame replacement is the only path to compliance. We tear out and replace more jalousie runs in Old Town than any other product.
Not automatically. The insurer wants to see the Miami-Dade NOA documentation for the specific product installed and proof that a licensed contractor pulled the permit and passed inspection. A window that is impact-rated but missing its NOA sheet can still get a wind-damage claim denied after the fact. Our Keystone Standard registers both warranty layers in writing and gives you a copy of the NOA documentation for your insurer.
The salt. Key West sits directly in marine salt air with no inland buffer, and standard coastal-grade aluminum frames pit and corrode at the fasteners and corners within five to seven years. The glass is fine, but the frame loses its structural bite and the weatherstripping rots. We install marine-spec hardware and stainless fasteners by default on every opening because anything less is just planning a callback.
Yes. HARC has ordered removal of installed windows that cleared the building inspection but did not match the approved Conch house profile, muntin pattern, or frame color. The commission’s review is separate from the building department’s structural inspection, and a certificate of appropriateness is not the same as a permit. We carry the HARC pre-approval package before we order a single unit in Old Town. Call (754) 238-2201 for a free estimate and we will show you exactly what the commission requires for your street.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key West and the Florida Keys. Call (754) 238-2201 for a free replacement estimate.
Six Reasons Homeowners Choose TruePane Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
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.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.



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