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.
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AfterFast, Reliable Duct Sealing Across Leisure City
We dispatch to Leisure City from our Miami office, and crews are usually on-site within the same day you call. If you live near the east side of Leisure City, you already know why that matters: after a heavy summer rain or hurricane threat, water-logged flex duct doesn’t wait for a convenient appointment. Call us at (361) 326-5060 and a live person answers, 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
Our technicians know Leisure City’s housing stock: the concrete-block homes rebuilt after Hurricane Andrew, the manufactured homes along the east side, the attics that turn into steam baths from May through October. We’ve sealed ducts in homes off SW 152nd Avenue, in neighborhoods near the agricultural fields, and in the older mobile home parks where ductwork was never designed to handle South Florida’s humidity. That local knowledge changes what we find and how we fix it.
Why Hollis Air Duct Cleaning Is Leisure City’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. The Garrison Standard means we arrive inside the quoted window, price the job in writing before we touch anything, and leave the site clean. Our Duct Sealing in Leisure City crews are background-checked, uniformed, and equipped with professional-grade tools from Rotobrush, Nikro, and Abatement Technologies.
Every duct sealing job in Leisure City carries our 365-Day Done Right Promise in writing. If the seal fails within a year, we come back and make it right at no charge. That includes a free second visit. No negotiation. No “let us check our schedule.” We fix it because we said we would.
Our phones are answered by a live person around the clock. When you’re staring at a sagging duct run after a storm, “leave a message” isn’t good enough.
Air Duct Sealing in Leisure City
Air Duct Sealing in Leisure City is often a storm-recovery repair, not a routine maintenance item. The post-Andrew rebuild era left thousands of homes with flex duct stapled in attic runs that were never designed to drain. After heavy rain, that duct sags into standing water. The blower motor pulls humid air through the entire system. Sealing wet duct without drying it first traps moisture behind the mastic. Mold spreads through the whole system within weeks. We don’t seal what we haven’t inspected with a camera and moisture meter first.
A typical duct sealing job in Leisure City runs $450 – $1,200 for a single-system home, depending on how many runs need attention and whether we’re working around storm damage. Whole-home resealing after significant water intrusion can reach $1,500 – $2,800. We write the price down before any work starts. It does not move at the door.
Storm-Damage Assessment and Documentation
We photograph every damaged run before we touch it. We pressure-test after sealing. That documentation is what your insurer needs to see the difference between pre-existing damage and our repair. On a manufactured home near the east side of Leisure City, our tech found a supply trunk flooded after summer rain – the flex duct was sagging into standing water, and the blower motor was pulling humid air through the entire system. We set up negative pressure containment, performed source removal on the wet run, dried and sanitized the ductwork, then sealed the joints with mastic and mesh before reinstalling the air handler components. The homeowner’s insurer accepted our photo documentation of the pre-existing damage and the post-repair pressure test.
Moisture Mapping Before Sealant
Our camera inspection flags any run that reads damp before we touch a seal. Sealing over wet flex duct is worse than doing nothing. The mastic cures, the moisture stays, and you’ve built a mold incubator. We dry first, seal second, document third.
Duct Sealing Services in Leisure City
Duct Sealing Services in Leisure City address the specific failure modes this climate and housing stock produce. The sandy soil around Leisure City’s agricultural areas gets drawn into outdoor intakes, abrading sealant at the plenum and register boots. Without source removal and HEPA filtration first, grit simply grinds the new seal open again. Post-Andrew attic runs in concrete-block homes were often stapled, not hung, so a leaking joint at the air handler goes unnoticed until the blower motor pulls humid attic air through the supply and return ducts, raising filter load and energy cost.
We seal with mastic and reinforced mesh, not tape. Tape fails in hot attics. Mastic remains flexible, fills irregular gaps, and holds against the pressure changes that flex duct experiences every time your system cycles. For register boots and plenum connections, we use mechanical fasteners plus sealant. The combination lasts.
Plenum and Boot Sealing
The plenum – the big box on top of your air handler – is where Leisure City’s sandy grit does the most damage. We remove the old sealant, clean the mating surfaces with a HEPA vacuum, and apply fresh mastic in a continuous bead. Register boots get the same treatment, with screws added where the original fasteners have backed out from thermal cycling.
Flex Duct Joint Repair
Flex duct connections are the weak point in every Leisure City attic. We inspect the inner liner, replace damaged sections, and seal the new joint with a double layer of mastic and mesh. The outer insulation gets sealed separately to prevent vapor migration. Two barriers, one goal: no unconditioned air in your ducts.
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 Leisure City
Our crews carry professional-grade equipment from Nikro, Honeywell, and Aprilaire – the same tools commercial crews use, maintained to manufacturer spec and ready for Leisure City’s conditions. Nikro negative-air machines create the containment we need for post-storm source removal. Honeywell and Aprilaire filtration products handle the high particulate load that comes with sandy soil and agricultural dust. We stock common plenum and boot sizes for the manufactured homes common in east Leisure City, so we’re not ordering parts while your system stays open. Fast turnaround matters when humidity is climbing and mold is already growing.
Common Duct Sealing Problems We See in Leisure City Homes
- Sagging flex duct after summer storms. The east side of Leisure City sees this every hurricane season. Water collects in low spots where duct was stapled flat instead of hung with proper slope. We dry, sanitize, and rehang before sealing – or document replacement if the liner is delaminated.
- Abraded sealant from sandy intake air. Leisure City’s sandy soil and nearby agricultural operations pull grit into outdoor intakes. That grit scours sealant at the plenum and boots. We clean with HEPA filtration first, then seal with abrasion-resistant mastic.
- Hidden leaks at stapled attic runs. Post-Andrew concrete-block homes often have duct stapled to rafters instead of hung with strap. A small leak at the air handler goes unnoticed for years, pulling 140-degree attic air into your supply. We find these with pressure testing and seal with access panels for future inspection.
- Mold behind failed tape seals. Duct tape in a hot attic dries and cracks in 2 – 3 years. Humid air leaks out, condenses on cool surfaces, and mold follows. We remove all tape residue and replace with mastic rated for wet locations.
Pricing for Duct Sealing in Leisure City, FL
Here’s what duct sealing costs in Leisure City’s market:
| Service | Typical Range |
|---|---|
| Single-run seal repair (plenum, boot, or joint) | $180 – $340 |
| Partial system sealing (3 – 5 runs) | $450 – $850 |
| Whole-home duct sealing, single system | $1,200 – $2,800 |
| Storm-damage resealing with drying/sanitizing | $1,500 – $3,200 |
What moves the price: how many runs need attention, whether we’re working around water damage that requires drying first, access difficulty in tight attics or crawlspaces, and whether register boots or the plenum need resealing too. We inspect with a camera, write the price down, and get your approval before any work starts. No per-vent pricing. No teaser coupon that balloons once the van is in your driveway. Call (361) 326-5060 for a free estimate – we’ll give you a real number you can plan around.
We Also Serve Cities Near Leisure City
Our Duct Sealing crews cover the full South Florida region, including Jacksonville, Miami, Tampa, and Orlando. Scheduling and dispatch are coordinated from our Miami office, with local technicians serving each market under The Garrison Standard.
Serving Leisure City, FL - Our Local Coverage Area
We’re based in the Leisure City 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 Leisure City
It depends on whether the inner liner is intact. If the flex duct is water-logged but the inner plastic liner hasn’t delaminated or torn, we can dry it with negative-air containment, sanitize with an EPA-registered product, and seal the joints with mastic and mesh. If the liner is separating or the insulation is compressed, replacement is the only option – sealing over damaged liner traps moisture and guarantees mold. We document the condition with camera footage before we decide, so you have evidence for your insurer. Call (361) 326-5060 and we’ll inspect it same-day.
Yes, but only if the ducts are dry and clean first. Sealing stops humid outside air from entering the system through leaks. In Leisure City’s concrete-block homes with hot attics, that outside air is the moisture source that feeds mold. But sealing over existing mold or wet duct makes the problem worse. Our process: inspect with camera, remove moisture and contamination, then seal. The seal preserves the dry, clean condition. Without the seal, you’re back to square one in six months.
We photograph every damaged run from inside with a duct camera, showing the standing water, delamination, or mold growth. We pressure-test the system before and after repair, with digital readings recorded. Our invoice separates pre-existing damage from repair work, and we include the photo timestamps and pressure-test results. Most Leisure City insurers accept this package without dispute because it shows cause, condition, and correction in one document. We do this on every storm-damage job – standard procedure, not an extra charge.
Duct cleaning removes what’s inside: mold, dust, grit, water. Duct sealing fixes the envelope: the leaks at joints, boots, and plenum that let outside air in. After a storm, you usually need both. Cleaning without sealing leaves the entry points open for the next humid day. Sealing without cleaning traps mold and debris inside. We assess which to do first based on moisture readings – dry and seal, or clean, dry, then seal. The sequence matters in Leisure City’s climate.
Age alone doesn’t disqualify it. We’ve sealed ductwork in 1970s mobile homes in Leisure City that was in better condition than 1990s installs because the original metal duct held up while later flex retrofits failed. What matters is physical condition: are the joints accessible, is the liner intact, are the boots still attached to the floor or ceiling? We inspect with a camera and give you an honest assessment. Sometimes partial replacement plus sealing is the right path. We write the options down with prices for each, and you choose. Call (361) 326-5060 for a free inspection.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Leisure City under The Garrison Standard since 2004.