Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Energy-Efficient Windows Across Iona
Energy-efficient window replacement in Iona typically runs $800 to $1,500 per window installed, with whole-home packages ranging from $8,000 to $25,000 or more depending on opening count and wind-zone requirements. Most Iona homes built before 1992 need full frame-out replacements rather than sash swaps, because the existing aluminum frames fail current Lee County wind-load reviews. That is the reality of this market after Hurricane Ian, and it is why we quote the work honestly up front. Call (239) 323-5522 for a free in-home measure and a written line-item quote.
If you live in Iona, you already know what the salt air off the Caloosahatchee does to aluminum window frames. You have probably watched a window seal fog over within a few years of installation. What you may not know is how many of those windows installed in the 1990s and early 2000s are now failing Lee County’s permit review because their Miami-Dade NOA product approvals are no longer valid. We deal with that every week, and we will not let you spend money on a sash swap that the county will reject.
Why TruePane Windows & Doors Is Iona’s Preferred Energy-Efficient Windows Company
TruePane Windows & Doors has built its reputation in Iona on one thing: doing the job the way the homeowner needs it done, not the way a franchise playbook says it should go. Dale Kessler founded this company in 2008 as a second-generation glazier who was tired of seeing out-of-true installs and voided warranties. The rule on his whiteboard has not changed: if the pane is not true, the job is not done.
Iona homeowners call us because we say what we mean in writing. Every quote is a fixed price with line items you can read. Both manufacturer warranty layers get registered, in writing, with durations stated, before the truck leaves your driveway. That is The Keystone Standard, and it applies to every window we install. No paperwork fights. No arguing about coverage later.
Our technicians are background-checked, uniformed, and trained as apprentices into journeymen. We measure every opening twice. We quote manufacturer lines side by side on paper so you see exactly what you are buying. And when we say we will be there, we are there. A live person answers our phone 24 hours a day, seven days a week. Not a voicemail tree. Not a call center. A person.
Our Energy-Efficient Windows Services in Iona
Low-E & Argon Gas Glass
Low-E coated glass with argon gas fill is the baseline for any energy-efficient window worth installing in Iona. The coating reflects infrared heat back outside while letting visible light through, and the argon gas between panes slows heat transfer. In a concrete block home on McGregor Boulevard with west-facing exposure, that combination can cut solar heat gain noticeably compared to the single-pane aluminum sliders builders put in during the 1970s and 1980s.
We install Low-E glass in every configuration Iona’s climate demands, including impact-rated double-hungs and casements. The salt air here degrades seals faster than inland Lee County, so we specify marine-grade glazing tape and PVD-coated hardware on coastal openings.

ENERGY STAR Replacement Windows
ENERGY STAR certification means the window meets federal performance standards for your climate zone. In Iona, that means a U-factor and Solar Heat Gain Coefficient tuned for South Florida’s cooling-dominated load. We stock ENERGY STAR rated lines from PGT and ViewLux, both Florida Product Approved for Lee County’s wind zone.
Replacing pre-1992 jalousie or single-pane double-hungs with ENERGY STAR rated insulated glass changes the comfort inside an Iona home. The rooms stop baking in the afternoon. The AC cycles less. And because we install impact-rated IGUs, the same window that lowers your electric bill also satisfies your insurer’s wind-mitigation requirements.

Insulated Laminated Glass
Insulated laminated glass combines an air or argon space between panes with a plastic interlayer bonded inside the inner lite. That interlayer is what stops windborne debris from breaching the window during a storm, and it is what Lee County requires for large-missile impact ratings. It also cuts outside noise, which matters on homes near McGregor Boulevard or the mid-island bridges.
In Iona, the interlayer is not an upgrade. It is the difference between a window that passes inspection and one the county rejects. We install laminated insulated units as standard on impact openings, not as a line-item upcharge buried in the quote.

UV-Blocking & Fade Protection
UV radiation from Iona’s intense sun fades furniture, flooring, and window treatments faster than most homeowners expect. A quality Low-E coating already blocks a large portion of UV light, but for rooms with heavy sun exposure, we can specify enhanced UV-blocking films or glass treatments. This is worth considering in homes with large east-facing sliding glass doors where the morning sun hits hard.
We will tell you what a given glass package will and will not do for fade protection. Some UV will always get through. What the right glass does is slow the damage enough that your furniture and floors last years longer.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Iona
We are an authorized installer for more than a dozen manufacturer lines, and that matters when a Lee County permit reviewer asks for specific Florida Product Approval documentation. We install PGT, Mr-Glass, and Therma-Tru units regularly in Iona because these manufacturers carry current NOA approvals for Lee County’s coastal design zone and publish design pressure ratings per configuration. When you need a PGT impact-rated casement for a salt-exposed opening on a canal-side home, we quote it side by side with comparable lines so you can see the cost difference on paper. We carry common replacement parts locally for Iona customers, which means fewer return trips when a latch or balance fails.
Common Energy-Efficient Windows Problems We See in Iona Homes
- Failed wind-load reviews on pre-1992 aluminum sliders. Homes built before Hurricane Andrew’s code changes typically have single-pane sliders that cannot meet current Lee County design pressure minimums. A sash swap gets rejected at permit review, and the homeowner is left with a full replacement anyway.
- Salt-spray corrosion on jamb and sill hardware. The humid, salty air near the Caloosahatchee River estuary pits aluminum extrusions and oxidizes hardware within a few years. Once the jamb is compromised, the window stops sealing properly and AC loss climbs.
- Fogged IGUs from failed glazing seals. A double-pane unit that fogs has lost its insulating gas and most of its energy benefit. In Iona’s humid climate, seal failure happens faster than inland, especially on openings exposed to direct afternoon sun and salt air.
- Grandfathered impact windows losing NOA approval. Impact windows installed in the 1990s and early 2000s often fail current Lee County permit reviews when their Miami-Dade NOA product approvals lapse. This is the “grandfathered product” trap, and it forces full frame-out replacements instead of the cheaper glass-only fix homeowners expect.
Pricing for Energy-Efficient Windows in Iona, FL
Here is what energy-efficient windows cost in Iona right now. A standard impact-rated vinyl single-hung runs roughly $900 to $1,800 per window installed. Large or custom openings, like a picture window on a canal-facing wall, run $2,500 to $5,000. Whole-home packages on a typical three-bedroom CBS rancher land between $8,000 and $25,000 and up. The biggest cost drivers are opening count, the wind zone rating the opening requires, floor height, and whether the existing frame passes inspection or needs a full frame-out. In Iona, assume full frame-out. Most pre-1992 homes need it, and we would rather quote it honestly than surprise you with a change order later. Call (239) 323-5522 for a free in-home measure and a written quote.
What Energy-Efficient Windows Costs in Iona
Impact windows in Lee County’s coastal design zone generally run $800 to $1,500 per window installed, with single-hung units at $900 to $1,800 and large or custom openings at $2,500 to $5,000. Whole-home packages for an Iona CBS home typically fall between $8,000 and $25,000 or more. What moves the price? First, the number of openings. A three-bedroom rancher may have 12 to 18 windows and two to three doors. Second, the design pressure rating each opening requires, which depends on window size, height above grade, and proximity to the coast. Third, frame material. Aluminum and vinyl are both common, but marine-grade finishes cost more and hold up better in Iona’s salt air. Fourth, whether the existing opening requires reframing due to rotted sill plates, corroded jamb anchors, or failed wind-load reviews. That last one is the one that catches people. We inspect everything before we quote, and we put allowances in writing so there are no surprise line items. Call (239) 323-5522 to schedule a free in-home measure and get a fixed written quote.
Florida Pays You Back
There are real incentives for upgrading to energy-efficient impact windows in Lee County right now. The My Safe Florida Home program offers matching grants up to $10,000 for qualifying wind-mitigation upgrades, and impact-rated windows and doors qualify. The state of Florida also exempts impact-resistant windows and doors from sales tax. On the federal side, the 25C energy credit covers 30% of the product cost on qualifying energy-efficient units, up to $600 per year. And most windstorm carriers in Iona will reduce the windstorm portion of your premium after you pass a wind-mitigation inspection, which typically runs $75 to $150 and confirms your openings meet current code. We do not set these numbers and we will not promise a discount amount your carrier has not approved. But we will install the windows that qualify, register the warranties, and give you the documentation you need to file.
We Also Serve Cities Near Iona
If you are in Iona, Fort Myers, Cape Coral, Lehigh Acres, or North Fort Myers, our Energy-Efficient Windows crew serves the whole area. We carry local parts and schedule around your availability. A live person answers the phone 24/7, and the estimate is always free.
Serving Iona, FL - Our Local Coverage Area
We’re based in the Iona 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 - Energy-Efficient Windows in Iona
Because the county will not accept the old frame. Lee County permit reviewers check the Miami-Dade NOA product approval on any installed window assembly, and many impact windows installed in the 1990s and early 2000s have NOAs that have lapsed or been withdrawn. When that happens, the window no longer meets Florida Building Code for Iona’s 150 mph+ coastal wind zone, and the county requires a full frame-out replacement with a currently approved assembly. You cannot just swap the sash into a frame with no valid product approval. We verify NOA status before quoting so you do not pay for work that will not pass inspection. Call (239) 323-5522 if you want us to check your existing windows before you file a permit.
Iona homes near the Caloosahatchee River estuary need PVD-coated or marine-grade stainless hardware on every opening. Untreated aluminum hardware will pit and seize within a few years in this salt air. We specify PVD-coated balances, locks, and hinges on coastal openings, and we use marine-grade glazing tape to protect the seal. It costs a little more up front and saves you from a window that will not lock properly in five years. Call (239) 323-5522 for a quote that includes the right hardware for your exposure.
It depends on your current windows and your home’s exposure, but replacing single-pane aluminum sliders with Low-E insulated impact units in an Iona CBS home typically cuts the cooling portion of the electric bill by 15% to 30%. Homes with heavy west-facing glass on McGregor Boulevard or open to the afternoon sun see the biggest change. The glass also makes the house more comfortable, especially in rooms that used to bake. We will give you an honest assessment before you spend. Call (239) 323-5522 to schedule a free in-home measure.
Yes, most windstorm carriers in Lee County offer premium credits for impact-rated openings that pass a wind-mitigation inspection. The credit applies to the windstorm portion of your policy and often averages around 25%, though the number is set by your carrier, not by us. You will need a wind-mitigation inspection, which runs $75 to $150 in Iona. The inspector verifies that your windows and doors meet current Florida Building Code impact requirements. We install windows that pass, and we provide the product approval documentation your inspector needs. Call (239) 323-5522 if you are shopping insurance and need to know which openings will qualify.
A window energy audit in a CBS home measures air leakage around each opening, the heat gain through the glass itself, and whether the window frame still seals against the concrete block wall. In Iona, we also check for salt corrosion on the frame and sill, because that is usually what breaks the seal on older aluminum windows. The audit tells you which openings are costing you the most in cooling and which ones need replacement before the next storm season. We price audits by the opening, and you get the findings in writing. Call (239) 323-5522 to schedule one.
What Opening Up an Older Iona Home Actually Turns Up
This is the part nobody wants to talk about until the job is underway. When you open up a window in a home built in the 1970s or 1980s along the Caloosahatchee corridor, you rarely find clean framing. On a concrete-block rancher off McGregor Boulevard, our crew opened up a 1980s-era window wall and found corroded aluminum jamb anchors and a rotted sill plate. The window looked fine from the outside. The structure behind it was not.
In Iona specifically, older impact windows installed in the 1990s and early 2000s are routinely losing their Miami-Dade NOA status during Lee County permitting reviews, forcing full frame-out replacements rather than simple sash swaps. This is a trap unique to post-Ian rebuild markets like this one, and it is the single biggest reason a replacement quote moves. The county will not approve a window assembly whose product approval no longer exists, no matter how good the glass looks.
So this is how we handle it. Inspection first, before we quote anything. We pull the interior trim on suspect openings and check what is behind the frame. We measure the rough opening, check the sill, and look for the salt corrosion and rot that the humid air here causes. Then we write allowances into the contract for the framing work that may be necessary. If we open the wall and find something we did not expect, we price it on paper and get your written approval before we touch it. No surprise line items. No change orders you did not sign. The job is done right the first time, and the price is what we said it would be.
On that McGregor Boulevard rancher, we replaced the entire opening with a PGT impact-rated double-hung featuring Low-E insulated glass and a laminated glass interlayer. That assembly achieved a design pressure of DP 50 and passed the large-missile rating before final inspection. The opening is sealed, the glass is rated, and the warranty is registered in writing. That is what done right looks like in Iona.
Call (239) 323-5522 to schedule your free in-home measure and get a written quote that accounts for what is really behind your walls. We will be there when we say.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Iona, FL since 2008.
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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