Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Fast, Reliable Duct Sealing Across North Fort Myers
Duct sealing in North Fort Myers typically runs $450 – $1,200 for a whole-home system, with most jobs completed in a single visit after a written estimate. If your ducts are pulling in humid outdoor air, leaking cooled air into your attic, or spreading musty odors after a storm, sealing the system is often the fix that cleaning alone cannot provide.
We serve North Fort Myers from our South Florida dispatch office, with crews running regularly to the unincorporated Lee County neighborhoods east of US-41, from Suncoast Estates down to the mobile home parks along Bayshore Road and SR-78. These are not quick in-and-out stops for us. We’ve worked on enough 1950s concrete-block bungalows and manufactured homes on wells and septic to know that duct problems here look different than they do in newer Cape Coral subdivisions, and that North Fort Myers Dryer Vent Cleaning is often needed alongside duct work. The fine Florida sand, rust scale from decades of humidity, and biological growth in original galvanized or flex duct systems mean we inspect before we quote, and we quote in writing before we touch anything. Call (361) 326-5060 to schedule a free estimate.
Why Hollis Air Duct Cleaning Is North Fort Myers’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004, and our Duct Sealing in North Fort Myers crews operate under The Garrison Standard: arrive inside the quoted window, price in writing, complete the job by the book, and leave the site clean. North Fort Myers homeowners are not shopping for the lowest teaser price. They’re shopping for a crew that shows up uniformed, explains what they found, and stands behind the work for a full year.
Our technicians are background-checked and uniformed, and our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues. When you call (361) 326-5060, you speak to someone who can schedule your North Fort Myers appointment and confirm your written estimate will be ready before any work begins.
The 365-Day Done Right Promise covers every duct sealing job we do in North Fort Myers. If the seal fails, if a joint reopens, or if the musty odor returns within a year, we come back at no charge. That includes a free second visit, not a negotiation. We put it in writing on every job because that’s how The Garrison Standard works.
Duct Sealing Services in North Fort Myers
Duct Sealing Services in North Fort Myers address a specific problem: conditioned air escaping through gaps, joints, and seams in your ductwork, and unconditioned outdoor air being pulled in through those same openings. In a humid subtropical climate where outdoor relative humidity routinely exceeds 80% from June through September, every leak in your duct system is an entry point for moisture, mold spores, and the fine sand that settles over everything east of US-41. Our Duct Sealing team uses professional-grade mastic, foil-backed tape rated for Florida humidity, and mechanical fasteners to create permanent seals that hold up to expansion and contraction through wet season and dry.
A typical whole-home duct sealing in North Fort Myers runs $450 – $1,200 depending on system accessibility, duct material, and whether we’re sealing accessible joints in an attic or working beneath a mobile home where flex runs may need to be elevated and re-supported. We price by the system, not by the vent, and the written quote is the price you pay.
Post-Storm Duct Recovery and Sealing
After tropical storms or hurricanes, wind-driven rain can force water into attic ducts and leave standing water in low-lying mobile home underbellies. We do not seal over wet ductwork. Our protocol is inspect, document, dry or replace, then seal. We run camera inspections on every underbelly flex run to verify the interior is dry and structurally sound before any mastic or tape goes on. This protects your indoor air quality and gives you the documentation you need if an insurance claim is involved.

Blower Door Verification
We verify our sealing work with a blower door test and negative pressure check to confirm the system holds pressure after we’re done. In North Fort Myers, where duct systems are often decades old and have never been professionally sealed, the before-and-after difference is usually measurable in both airflow and energy use. We show you the numbers.

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.
Duct Insulation in North Fort Myers
Duct Insulation in North Fort Myers is often the companion service to sealing, especially in older homes where original fiberglass wrap has degraded or in mobile homes where flex runs lie exposed to the elements beneath the structure. Insulation without sealing is wasted money, air leaks right past it. Sealing without insulation leaves your cooled air warming up before it reaches the vent. We assess both together and quote what you actually need.
A typical duct insulation job in North Fort Myers runs $600 – $1,800 depending on linear footage, R-value required, and whether we’re working in an accessible attic or crawling a mobile home underbelly. We use professional-grade materials from Honeywell and Aprilaire, specified for the humidity and temperature swings this climate produces.
Vapor Barrier Replacement
In North Fort Myers’s wet season, condensation inside ductwork feeds mold and mildew that can colonize flex ducts and give HVAC systems a persistent musty odor. When we replace insulation, we install a proper vapor barrier on the exterior to block humid outdoor air from reaching the cool duct surface. This is standard practice for us, not an upsell.
Underbelly Encapsulation for Mobile Homes
In the mobile home parks off Bayshore Road and SR-78, we frequently find flex runs lying directly on the ground with no skirting barrier or ground seal. We elevate the duct on proper supports, seal all joints with mastic, then install a durable ground barrier that reduces moisture intrusion and rodent access. The work is documented with before-and-after photos for your records.
Trusted Brands We Service in North Fort Myers
We stock parts and materials from Nikro, Honeywell, Aprilaire, and Abatement Technologies, the same brands commercial crews use, so North Fort Myers homeowners don’t wait on special orders while their AC runs inefficiently. Our Nikro negative-air machines and Rotobrush rotary brush systems are on every truck, and our sealing mastics and tapes are rated for the 80%+ humidity this region sees half the year. When we quote a job, we specify what materials we’ll use and why they match your duct type, whether that’s brittle duct board in a 1960s bungalow or modern flex in a manufactured home. Fast turnaround matters here because running AC with leaking ducts in July is not just uncomfortable, it’s expensive.
Common Duct Sealing Problems We See in North Fort Myers Homes
- Sealing over flex duct that has already taken on floodwater. The tape and mastic look fine on the outside, but the insulation stays wet and mold keeps colonizing from the interior. We camera-inspect every flex run before sealing, and we document water damage with photos if replacement is needed.
- Standard foil tape on brittle, sun-baked duct board in 1950s – 70s bungalows. The board delaminates and the seal fails within a season. We use mastic with embedded mesh on deteriorating duct board, or we recommend section replacement if the substrate is too far gone.
- Skipping a camera inspection on underbelly flex runs in mobile home parks. Rodent-chewed or collapsed sections get sealed without being repaired first, so the system still leaks and the odor persists. We inspect first, every time.
- Ignoring the elevation problem beneath mobile homes. Flex runs lying on the ground pull in sand, mold spores, and sometimes floodwater after a tropical storm. Our job includes restoring an elevated, sealed duct path, not just taping joints.
Pricing for Duct Sealing in North Fort Myers, FL
Whole-home duct sealing in North Fort Myers typically costs $450 – $1,200. Duct insulation runs $600 – $1,800. Combined sealing and insulation for a full system generally falls between $900 and $2,400. What moves you within those ranges: system size, duct material and condition, accessibility (attic crawl versus mobile home underbelly), and whether post-storm damage requires section replacement before sealing can begin.
We do not quote per-vent pricing. We do not bait with a low coupon and raise the price at the door. We inspect your system, write down one flat price per system, and that is what you pay. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near North Fort Myers
Our crews regularly work in Cape Coral, Fort Myers, Fort Myers Beach, and Lehigh Acres. Each neighborhood has its own duct conditions, from the newer construction in Cape Coral to the older ranch homes in Lehigh Acres, but our inspection-first, written-price protocol stays the same. If you’re in one of these areas and need Duct Sealing, the same crew standards and 365-Day Done Right Promise apply.
Serving North Fort Myers, FL - Our Local Coverage Area
We’re based in the North 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 About Duct Sealing in North Fort Myers
It depends on what the camera inspection shows. If the flex runs are waterlogged, collapsed, or mold-contaminated, we cut out and replace those sections before sealing anything. If the water reached only the exterior wrap and the interior is dry and intact, we can dry, seal, and reinsulate. We document everything with photos for your insurance claim, and we never seal over wet ductwork. Call (361) 326-5060 for a free post-storm inspection.
Because the root problem was not fixed. Flex runs lying on the ground beneath the home are exposed to moisture, rodent intrusion, and sand infiltration. Tape and mastic on the joints do nothing if the duct is still sitting in standing water or pulling in humid air through torn underbelly skirting. We elevate the duct on proper supports and seal the ground barrier as part of the job. Without that step, the seal fails again within a season.
We photograph every stage: the initial camera inspection showing water or mold inside the duct, the removed damaged sections, the new elevated and sealed installation, and the final blower door verification. We provide dated, geotagged photos and a written report describing the damage cause, the repair scope, and the test results confirming system integrity. Adjusters in Lee County see these reports regularly and know our documentation holds up.
Sometimes, but not always. Galvanized steel ducts from that era often have rust scale, separated seams, and pinhole corrosion from decades of humid attic conditions. We inspect with a camera and pressure test. If the metal is structurally sound, we seal the joints with mastic and mesh. If the duct is deteriorated or the seams are blown open, we recommend section replacement with modern duct board or flex. We give you a written quote for either path before any work starts.
It stops your HVAC system from pulling in humid outdoor air through leaks in the return and supply ducts. In North Fort Myers, where outdoor humidity exceeds 80% for months at a time, every leak is a direct path for moisture and mold spores into your living space. Sealing those leaks, combined with proper insulation and vapor barriers, drops the moisture load on your system and typically eliminates the musty odor within 48 – 72 hours of completion. Call (361) 326-5060 if you’re dealing with persistent humidity or odors – we’ll inspect and quote at no charge.
Ready to stop losing cooled air and start breathing cleaner, drier air in your North Fort Myers home? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate on duct sealing or insulation. We’ll inspect your system, show you what we found, and give you one flat price before any work begins. Every job is backed by our 365-Day Done Right Promise, in writing.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving North Fort Myers and surrounding Lee County communities.




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