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 West Perrine
We seal ducts in West Perrine homes where the real enemy isn’t dust, it’s moisture. With summer dew points in the mid-70s and a water table that keeps crawlspaces damp year-round, duct sealing here is about stopping humid outside air from infiltrating your system before it becomes a mold problem. Call (361) 326-5060 for a free estimate. Our crews dispatch from our Miami office and serve West Perrine directly, carrying the same Rotobrush and Nikro equipment we use on West Perrine Dryer Vent Cleaning and commercial jobs throughout South Florida.
We’ve worked on the single-story CBS homes off Southwest 168th Street, the wood-frame ranches near the original Perrine development, and the retrofitted additions that dot the neighborhood. That local pattern recognition matters. When a West Perrine homeowner calls with a musty return grille, we already know to check for sagging flex-duct behind the air handler and improperly sealed runs in enclosed porches. Our Duct Sealing team doesn’t guess. We camera-inspect, moisture-test, then price the work in writing before touching anything.
Why Hollis Air Duct Cleaning Is West Perrine’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004, and our South Florida crews have built a reputation in West Perrine for showing up inside the quoted window, pricing in writing, and leaving the site clean. The Garrison Standard isn’t a slogan. It’s a set of operational rules: written price before work starts, background-checked and uniformed technicians, and a 365-Day Done Right Promise that covers every repair in writing.
West Perrine homeowners aren’t shopping for the cheapest bid. They’re shopping for the bid they can trust. Our technicians arrive in marked vehicles, explain what the camera inspection reveals in plain terms, and document moisture readings and pre-seal photos so there’s no dispute about what was found and what was fixed. Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
Dispatch and scheduling for West Perrine are coordinated from our Miami office, but the crews that arrive at your door are local to South Florida and familiar with the specific failure modes of pre-1990 CBS construction. That combination of corporate discipline and local knowledge is why West Perrine customers call us back when they move to their next home.
Duct Sealing Services in West Perrine
Duct Sealing Services in West Perrine address a specific set of problems driven by local conditions: high humidity, a high water table, and housing stock built mostly between the 1950s and 1980s. The job involves finding leaks in your supply and return ductwork, cleaning and drying the compromised areas, then sealing joints, seams, and connections with mastic and mesh to create an airtight barrier. In West Perrine, this almost always includes antimicrobial treatment because the leaks we’re sealing have been pulling moist, microbe-laden air into your system for months or years. A typical duct sealing job in West Perrine runs $450 – $850 for a single-system home, with larger homes or multiple zones ranging $900 – $1,400.
Post-Storm Moisture Assessment and Sealing
After a July storm cell stalled over West Perrine, a homeowner near Southwest 168th Street called us because a musty smell was hitting them at the return grille. Our tech ran a camera inspection, found standing condensate and dark microbial growth in a sagging flex-duct run behind the air handler, and used negative pressure with HEPA filtration and agitation tools to perform source removal before sealing the compromised joints with mastic and mesh. We documented every moisture reading and pre-seal photo so the homeowner’s insurer could see exactly where the water intrusion started and why sealing, not full replacement, was the right call. That’s the standard we apply to every post-storm duct sealing job in West Perrine.

Flex-Duct Repair and Joint Reinforcement
Original 1970s flex-duct in West Perrine homes has often sagged, torn at connection points, or been crushed by decades of attic traffic. We don’t just tape over the damage. We cut out compromised sections, install new flex-duct with proper support straps, then seal every joint with mastic and fiberglass mesh. The result is a system that moves air efficiently and doesn’t pull humid attic or crawlspace air into your living space.

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 West Perrine
Duct Insulation in West Perrine is a separate but related service from sealing, and in this climate it’s often the difference between a sealed system that works and one that fails within a season. Uninsulated or poorly insulated ductwork running through a hot attic or damp crawlspace gains heat in summer and loses it in winter, forcing your AC to run longer and creating temperature swings between rooms. More critically in West Perrine, cold air inside poorly insulated supply ducts causes condensation on the exterior, which drips onto insulation, framing, and eventually into your living space. A typical duct insulation job in West Perrine runs $600 – $1,200 for a single-system home, depending on accessible linear footage and whether we’re reinsulating existing ducts or wrapping newly sealed runs.
Vapor-Barrier Wrapping for Humid Climates
Standard duct insulation without a proper vapor barrier is worse than none in West Perrine’s humidity. We use foil-faced insulation with sealed seams that block moisture migration from the outside in. Every wrap is taped at joints and supported so it doesn’t sag or compress, which would create cold spots where condensation forms.
Crawlspace and Attic Duct Protection
Ducts in West Perrine crawlspaces face a double threat: ground moisture from the high water table and humid outside air entering through foundation vents. We insulate and seal the ductwork, then evaluate whether additional crawlspace encapsulation is warranted to protect the investment. The goal is dry, conditioned air reaching your registers without picking up heat or moisture along the way.
Trusted Brands We Service in West Perrine
We carry professional-grade equipment and materials on every West Perrine job, including Nikro negative-air machines for controlled debris removal, Honeywell filtration components, and Aprilaire antimicrobial treatments. Our mastic and mesh sealing supplies come from Abatement Technologies, the same products used in commercial remediation nationwide. We stock these parts locally so we’re not waiting on shipments when a West Perrine homeowner has a post-storm moisture issue that needs immediate attention. That local inventory, combined with technicians trained on Rotobrush rotary brush systems and Nikro HEPA-filtered negative-air equipment, means we can diagnose, document, and seal most duct systems in a single visit.
Common Duct Sealing Problems We See in West Perrine Homes
- Sealing over damp flex-duct without verifying moisture content. In West Perrine’s humidity, trapped condensation behind new mastic becomes a mold incubator within days. We moisture-test every section before sealing, and we won’t seal wet ductwork.
- Duct runs extended into enclosed porches or additions without proper sealing. These retrofitted runs are common in West Perrine’s pre-1990 housing stock and often become dead zones that pull moist outside air into the supply and return ducts, creating microbial growth where homeowners never think to look.
- Skipping antimicrobial treatment because the ducts “look clean.” In pre-1990 CBS homes, bacterial biofilm and mildew colonize the interior duct wall and are invisible until camera inspection. We treat every sealed section to prevent regrowth.
- Ignoring the return grille musty smell that hits after summer storms. That smell means mold has taken hold inside the ducts, often within 48 hours of a humidity spike. It’s not a filter problem. It’s a duct integrity problem that sealing can solve if caught early.
Pricing for Duct Sealing in West Perrine, FL
Honest pricing means no teaser coupons that balloon once the technician is inside. For duct sealing in West Perrine, a typical single-system home runs $450 – $850. Larger homes, multiple zones, or systems requiring extensive flex-duct repair range $900 – $1,400. Duct insulation adds $600 – $1,200 depending on linear footage and accessibility. What moves the price: how much of the ductwork is accessible, whether we’re repairing or replacing flex-duct sections, and whether antimicrobial treatment and post-storm moisture remediation are needed. We write the price down before any work starts, and it does not move at the door. Every job includes before-and-after photos of your own ducts, moisture readings, and documentation for insurance if water intrusion was involved. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near West Perrine
Our South Florida crews handle duct sealing throughout the region, including Duct Sealing in West Perrine and surrounding areas. We also serve Jacksonville, Miami, Tampa, and Orlando with the same Garrison Standard: written prices, uniformed technicians, and the 365-Day Done Right Promise on every job.
Serving West Perrine, FL - Our Local Coverage Area
We’re based in the West Perrine 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 West Perrine
Replacement is necessary when flex-duct is saturated with standing water, structurally collapsed, or the inner liner is torn and contaminated beyond source removal. Sealing is viable when the duct is intact but leaking at joints, connections, or puncture points, and when moisture is limited to surface condensation or minor intrusion. We make this call with camera inspection, moisture meters, and written documentation that your insurer can review. Call (361) 326-5060 for a free post-storm assessment.
The musty smell is almost always microbial growth inside the ductwork, not surface dust on the registers. In West Perrine’s humidity, mold and bacterial biofilm colonize the interior duct wall within 48 hours of a moisture spike, and vacuuming the grille doesn’t reach it. We camera-inspect to locate the source, then remove it with negative-air HEPA filtration before sealing the leak that let the moisture in. Call (361) 326-5060 to schedule an inspection.
Duct sealing stops your HVAC system from pulling humid, unconditioned air from crawlspaces, attics, and wall cavities into your supply and return runs. In West Perrine, where the water table keeps crawlspaces damp year-round, unsealed ducts act as mold amplifiers. Sealing creates a closed system that moves only conditioned air, reducing condensation inside the ductwork and the microbial growth that follows. Call (361) 326-5060 for an estimate on sealing your system.
We photograph every moisture reading, every section of compromised duct, every step of the source removal process, and every sealed joint with mastic and mesh. We note the location, the extent of intrusion, and why sealing was the appropriate repair versus replacement. This documentation package has been accepted by insurers handling West Perrine claims because it shows causation, scope, and proper remediation methodology. Call (361) 326-5060 and we’ll explain what your specific policy likely requires.
Yes, if the flex-duct is structurally intact and dry. We often repair 1970s flex-duct in West Perrine by replacing crushed or torn sections, reinforcing sagging runs with proper support straps, then sealing all joints with mastic and mesh. If the inner liner is degraded or saturated with moisture, we’ll tell you replacement is necessary and show you the camera evidence. We don’t seal compromised ductwork just to collect a fee. Call (361) 326-5060 for an honest assessment of your system.
Ready to stop moist outside air from ruining your ducts and your indoor air quality? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll camera-inspect your system, moisture-test the critical runs, and give you a written price before any work starts. Every duct sealing job in West Perrine is backed by our 365-Day Done Right Promise: if the seal fails or the moisture returns, we come back and make it right at no charge, including a free second visit. Background-checked, uniformed technicians. Live person answering the phone, 24 hours a day, 7 days a week. No voicemail. No callback queues. No price changes at the door.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving West Perrine and South Florida under The Garrison Standard since 2004.




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