Fast, Reliable Duct Repair & Sealing Across Fort Myers
Duct repair and sealing in Fort Myers typically runs $280–$850 depending on whether you’re patching a few flex duct sections or resealing an entire metal trunk line, and most jobs we handle in Fort Myers are completed same-day. If you’re dealing with sagging flex duct above a detached workshop, post-Hurricane Ian contamination, or metal ductwork that’s been baking in a 150°F attic since the 1990s, you need a crew that shows up with the right equipment and expertise to finish in one trip — not a franchise sending subcontractors who’ve never worked an acreage property.
We’re Keystone Air Duct Cleaning Service Fort Myers, and Brian Rivera handles every job personally. Seventeen years in this trade means we’ve worked the full spectrum of Fort Myers housing stock — from the concrete block ranches along McGregor Boulevard to the newer builds in Cape Harbour and the rebuilds throughout Palmlee Park after Ian. We carry Rotobrush contact-vacuum systems, Nikro HEPA-rated equipment, and Abatement Technologies air-scrubbing gear on every truck, so we’re prepared for whatever your duct system throws at us. Call (833) 345-6820 for a free estimate.
Why Keystone Air Duct Cleaning Service Fort Myers Is Fort Myers’s Preferred Duct Repair & Sealing Company
Our reputation in Fort Myers is built on showing up and doing the work ourselves. Brian Rivera is the owner and the lead technician on every single call — the person you speak with on the phone is the person crawling through your attic. That matters in a market where too many homeowners have been burned by bait-and-switch duct cleaners who subcontract to whoever’s available that day.
We’ve earned a 4.9-star average across 91 verified reviews — a near-perfect score at real volume, not a handful of friends propping up a new business. Fort Myers customers specifically mention our one-trip completion rate and the fact that we diagnose the full picture: if we find contaminated ductwork during a sealing job, we can clean, seal, and sanitize in one visit rather than handing you a referral list.
Response time to Fort Myers addresses typically runs same-day to next-morning, and we know the local logistics that slow down other crews — the longer driveways on acreage properties off Daniels Parkway, the tight attic access in 1970s ranches, the post-Ian rebuilds where new flex duct was tied into old metal trunks that should’ve been replaced. That local knowledge saves you a return trip.
We’re also authorized to supply and install Honeywell and Aprilaire air quality upgrades during the same visit. If your duct sealing reveals inadequate filtration or humidity control, we can address it then — not schedule you three weeks out with another contractor.
Our Duct Repair & Sealing Services in Fort Myers
Duct Sealing
Leaky ductwork in Fort Myers homes wastes an average of 20–30% of conditioned air before it reaches your rooms, and that’s money you’re paying FPL to cool your attic. We seal supply and return plenums, trunk line connections, and register boots using mastic sealant and reinforced tape rated for the temperature swings your attic sees — 140°F in July down to 55°F on a January night when the snowbirds have the system off. For our Duct Repair & Sealing customers in Cape Harbour and Riverside, we pay special attention to return vents that took storm surge during Ian; even if the drywall was replaced, the duct boot connection often wasn’t resealed properly.
Flex Duct Repair
Flex duct is the default in Fort Myers’s 1970s–1990s housing stock, and it’s where we see the most failure. The plastic liner degrades in sustained attic heat, the insulation compresses where it’s been stepped on during HVAC service calls, and the inner liner tears at bends and supports. We recently worked on a McGregor Boulevard ranch where the owner’s detached workshop had a 12-foot tall garage door with two-inch-thick mastic-sealed flex ducts running overhead. After Ian, the duct liner had delaminated from 150°F attic heat, causing a 30% airflow loss. We replaced the damaged sections, sealed all joints with Rotobrush equipment, and balanced the system — all in one trip, because these homeowners don’t want callbacks.
Metal Duct Repair
The older east-side Fort Myers neighborhoods — McGregor corridor, parts of Villas, some Iona properties — still have galvanized steel trunk lines from the original construction. Metal duct doesn’t tear like flex, but the longitudinal seams pop, rust holes develop where condensation collects, and the connections to flex branch lines loosen over decades of thermal cycling. We repair metal duct with proper sheet metal patches, seal with mastic, and reinforce at stress points. On acreage properties with detached workshops, we often find metal duct was used for the longer runs to outbuildings; it requires a different skill set than flex-only crews possess.
Duct Insulation & Mastic Sealant
Fort Myers’s dew points in the low-to-mid 70s°F from June through October mean uninsulated or poorly sealed ductwork sweats continuously. That moisture degrades surrounding structure, breeds microbial growth, and reduces R-value as insulation gets wet. We apply mastic sealant — a thick, brush-on compound that fills gaps tape can’t reach — and replace damaged insulation with foil-faced product rated for our climate. Critical detail: mastic applied over dirty or oily surfaces in high-humidity garages peels within months. We clean before we seal, every time.
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 Fort Myers
We run professional-grade equipment because Fort Myers duct conditions demand it. Our Rotobrush contact-vacuum systems agitate and extract debris from duct interiors without damaging aging flex liner. Nikro HEPA-rated units capture particles down to 0.3 microns — essential when we’re working post-Ian properties with potential mold contamination. For containment and air scrubbing, especially in occupied homes, we deploy Abatement Technologies negative-air machines. We also stock Honeywell and Aprilaire filtration and humidity control products, so if your duct sealing reveals the need for upgraded air quality hardware, we can install it same-day rather than ordering parts.
Common Duct Repair & Sealing Problems We See in Fort Myers Homes
- Post-Ian contamination in “cleared” homes. Homeowners throughout Cape Harbour, Palmlee Park, and Riverside passed visual inspections after the 2022 storm surge, but return-air vents and low-lying duct runs still harbor waterline staining and microbial growth. We regularly find this on first inspection — the homeowners had no idea.
- Snowbird humidity damage. Thousands of Fort Myers homes sit minimally conditioned from May through October while owners are up north. Elevated interior humidity without airflow creates ideal conditions for mold colonization inside duct systems, discovered only when residents return and smell it.
- Flex duct delamination in 1970s–1990s ranches. The dominant housing stock along McGregor Boulevard and east-side subdivisions has original flex duct that’s reached end-of-life. The inner liner separates from the insulation blanket, creating airflow restrictions and debris accumulation points.
- Acreage workshop systems with heavy-duty requirements. Detached workshops with oversized doors need ductwork that can handle longer runs and greater static pressure. Standard residential flex and undersized metal trunk lines fail silently — ducts sag, disconnect from boots, and the homeowner just notices the workshop never cools properly.
Pricing for Duct Repair & Sealing in Fort Myers, FL
Here’s what duct repair and sealing costs in the Fort Myers market based on the jobs we’ve completed over the past two years:
| Service | Typical Range |
|---|---|
| Single register/boot resealing | $180–$280 |
| Flex duct section repair/replacement (one run) | $280–$450 |
| Metal duct patch and seal (small area) | $320–$520 |
| Whole-system mastic sealing (average home) | $650–$950 |
| Post-Ian contaminated duct remediation with sealing | $850–$1,400 |
| Acreage property with detached workshop (multiple zones) | $950–$1,800 |
What moves you within these ranges: accessibility (tight attic vs. walk-in), extent of contamination, whether we’re working around stored items, and if the system needs cleaning before sealing can be effective. We don’t guess — we inspect first. Estimates are free, and Brian Rivera does the inspection himself so you get an accurate scope from the person who’ll do the work. Call (833) 345-6820 to schedule.
We Also Serve Cities Near Fort Myers
Our service area covers the full Fort Myers metro including Villas, Cypress Lake, McGregor, and Iona — whether you’re in a canal-front home off McGregor Boulevard, a Cypress Lake condo, or an acreage spread with a detached workshop near the Lee-Collier line. Same response standards, same equipment, same Brian Rivera on every job.
Serving Fort Myers, FL — Our Local Coverage Area
We’re based in the Fort Myers 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 — Duct Repair & Sealing in Fort Myers
Yes. We work around existing openers and high-clearance doors regularly on Fort Myers acreage properties, using portable platforms and compact equipment that fits tight overhead spaces. We assess access during our free estimate so we arrive with the right setup — no second trip needed. Call (833) 345-6820 to schedule an inspection.
New flex duct should be sealed at installation, but post-Ian replacement work was often rushed, and we’ve found unsealed connections in numerous Fort Myers rebuilds. We inspect new installations for proper sealing at boots, plenums, and splice points — gaps here cost you 15–25% efficiency even on brand-new duct. Call (833) 345-6820 for a verification inspection; estimates are free.
We don’t seal over contamination — we clean and remediate first, then seal. For Cape Harbour properties with visible water staining, we inspect the full return pathway with camera equipment, treat any microbial growth with appropriate methods, and replace damaged components before applying mastic sealant. Sealing over mold traps the problem and makes it worse. Call (833) 345-6820 to discuss your specific situation.
Yes, metal duct repair is a core service, and we regularly work 1990s metal trunk lines in Palmlee Park and similar Fort Myers neighborhoods. We patch rust holes, reseal popped seams, and reinforce connections to flex branch lines. On acreage properties, we often extend metal trunk runs to outbuildings — a different skill than flex-only work. Call (833) 345-6820 for an assessment of your system’s condition.
We can, but sealing is the final step after remediation. For Fort Myers homes vacant since 2022, we first clean and treat the full duct system, verify contamination is addressed, then seal all connections to prevent re-infiltration. The extended vacancy with minimal airflow creates severe mold conditions that sealing alone won’t solve. Call (833) 345-6820 — we’ll inspect and give you a full-scope plan.
Ready to fix your ductwork? Brian Rivera handles every Fort Myers job personally, with 17 years of hands-on experience and professional equipment that gets it done in one trip. Call (833) 345-6820 for your free estimate — we’ll inspect, diagnose, and scope the work so you know exactly what you’re getting before we start.
Written by Brian Rivera, Owner at Keystone Air Duct Cleaning Service, serving Fort Myers since 2007.