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 Little River
We dispatch our Duct Sealing crews to West Little River from our Miami office, and most calls get a next-day or two-day arrival window. If you live in the blocks off NW 22nd Avenue, near the West Little River Park area, or closer to the Palmetto Expressway corridor, you’re inside our standard service radius. We’ve been inside enough homes here to know the pattern: original galvanized ductwork from the 1950s and 60s, retrofitted with modern high-efficiency air handlers that the old runs simply weren’t sized to feed. That mismatch creates pressure leaks you can feel in the electric bill and smell in the musty air coming from the vents. Call us at (361) 326-5060 and we’ll put a written price in front of you before any work starts.
Why Hollis Air Duct Cleaning Is West Little River’s Preferred Duct Sealing Company
Our reputation in West Little River is built on showing up inside the window and leaving the site clean. Roy Castellanos, who leads Hollis Air Duct Cleaning, set The Garrison Standard for this market: written price, written guarantee, no moving targets.
West Little River homeowners call us back because we explain what we found. A camera inspection gets shown on a tablet. The technician points out the separated trunk collar, the crushed flex run, the gap pulling 130°F attic air. Then we price the repair in writing.
Our 365-Day Done Right Promise covers every duct sealing job in writing. If the seal fails or the odor returns within a year, we come back at no charge. That includes a free second visit, not a negotiation.
Phones are answered by a live person 24 hours a day, 7 days a week. No callback queues. When you schedule Duct Sealing in West Little River, you get a background-checked, uniformed technician who arrives accountable and prepared.
Air Duct Sealing in West Little River
Air Duct Sealing in West Little River is often the repair that should have happened before the third duct cleaning. The job involves locating pressure leaks in your supply and return ductwork, then sealing joints, seams, and connections with mastic sealant and fiberglass mesh tape rated for HVAC use. We also reconnect separated sections and replace crushed or degraded flexible duct runs that sealing alone cannot fix. A typical Air Duct Sealing job in West Little River runs $450 – $1,200 for a single-system home, depending on how many joints need attention and whether any flex runs require replacement. Most West Little River homeowners need this work when rooms won’t cool evenly, the AC runs constantly, or a musty odor persists after cleaning.
What We Find in Older Systems
West Little River’s pre-1980 homes were ducted for the cooling capacity of the era, so when a modern high-efficiency air handler is retrofitted onto that original galvanized or early-flex system, the undersized runs go positive and pull hot, humid attic air – often 130°F+ – in through every unsealed joint. Sealing is frequently the actual repair, not a cleaning add-on. We see this on nearly every 1960s block home in the neighborhood.
Camera Inspection Before Sealing
We run a borescope through the trunk line and takeoffs before we quote. You see the gaps on screen. That way the price reflects actual conditions, not a guess from the driveway. No surprises at the door.
Duct Sealing Services in West Little River
Duct Sealing Services in West Little River cover the full repair sequence: negative-pressure source removal cleaning first, then mechanical repair of damaged runs, then mastic sealing of all accessible joints with mesh reinforcement. We also seal the plenum and air handler connections, which are common failure points in retrofitted systems. A full-system Duct Sealing Service in West Little River typically ranges from $650 – $1,800 when multiple flex runs need replacement or the plenum requires reconstruction. Homes with original galvanized sheet metal usually fall in the lower half of that range if the metal is intact and only joints need sealing.
Mastic vs. Tape-Only Methods
We use water-based duct mastic, not foil tape alone. Mastic remains flexible, fills irregular gaps, and holds up in the heat of a West Little River attic. Tape dries and curls. The difference matters five years in, when tape has failed and mastic is still sealed.

Post-Storm Evaluation Protocol
After hurricane season, we inspect for water intrusion at soffit vents and attic duct joints. Wind-driven rain enters these points, and the 130°F attic bakes moisture into duct liner. Sealing over contaminated liner traps odor. We identify wet sections and recommend encapsulation or replacement before sealing.

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 West Little River
Our equipment roster includes Nikro negative-air machines for controlled dust containment during sealing prep, plus Honeywell and Aprilaire filtration components we install when the system needs upgraded return-air protection. We stock common plenum fittings and flex duct sizes for West Little River’s residential systems, so most jobs finish in one visit without waiting on parts. For homes with specialized filtration needs, we also source Abatement Technologies HEPA accessories. Every tool and material is specified on the written quote before work begins.
Common Duct Sealing Problems We See in West Little River Homes
- Galvanized seam failure in mid-century homes. Original galvanized trunk and takeoff joints in 1940s – 1970s West Little River homes leak at nearly every seam after decades of humidity cycling. Resealing only the visible joints leaves the hidden attic-side gaps pulling hot air.
- Crushed or torn flexible ducting. Early flexible ducting that has degraded from heat and pest activity collapses or tears, so sealing the joint is pointless until the crushed run is replaced. We see this frequently in attic runs over the original bedrooms.
- Post-storm water intrusion. After a hurricane or even a heavy summer storm, technicians in West Little River routinely find that soffit vents and attic duct joints have been infiltrated by wind-blown water. Because the attic stays above 130°F, that moisture bakes into the duct liner, creating a musty odor that no standard cleaning removes without encapsulation or replacement.
- Retrofit pressure imbalance. Modern high-efficiency air handlers move more air than 1960s ductwork was designed to carry. The system goes positive, forcing conditioned air out through every weak joint and pulling unconditioned attic air in through return leaks. Sealing restores design static pressure.
Pricing for Duct Sealing in West Little River, FL
Most single-system duct sealing jobs in West Little River fall between $450 and $1,200. A straightforward joint-sealing job on intact galvanized ductwork runs toward the lower end. Jobs requiring flex duct replacement, plenum reconstruction, or post-storm moisture remediation reach the upper range. Two-system homes or properties with attic access complications may exceed $1,800. We give one flat price per system, agreed in writing before work starts. No per-vent pricing, no add-ons at the door. Every quote includes the 365-Day Done Right Promise. Call (361) 326-5060 for a free estimate – we’ll inspect with a camera and price what we see.
We Also Serve Cities Near West Little River
Hollis Air Duct Cleaning provides duct sealing throughout South Florida, with crews regularly dispatched to Jacksonville, Miami, Tampa, and Orlando. Scheduling and routing are coordinated from our Miami office to keep arrival windows tight across the service region.
Serving West Little River, FL - Our Local Coverage Area
We’re based in the West Little River 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 Little River
Original galvanized ductwork from the 1960s can usually be sealed successfully if the metal is intact and not rusted through. We camera-inspect to confirm wall thickness and seam condition. Replacement becomes necessary when rust has perforated the metal or the original takeoff angles are so restrictive that sealing alone won’t restore airflow. Call (361) 326-5060 and we’ll show you what the camera sees.
The odor is likely coming from moisture-baked duct liner in your attic, not loose debris in the duct. West Little River’s 130°F-plus attics cook humidity into the liner after storm intrusion or chronic leakage. Standard cleaning doesn’t reach embedded microbial growth in liner material. We identify wet sections and recommend encapsulation or replacement before sealing, or the odor returns. Call (361) 326-5060 for an inspection.
Year-round operation means every leak is active every day. Sealed ducts deliver all the conditioned air you paid for to the rooms that need it, instead of losing 20 – 30% to the attic. Your system cycles less, humidity control improves, and the blower motor works at design static pressure instead of overamping. The savings accumulate continuously in this climate.
Yes. We run Nikro negative-air machines during the pre-seal cleaning phase to contain dislodged debris. HEPA filtration protects the work area and your home’s air during the process. The sealing itself is done under controlled conditions so mastic cures properly and no contaminants enter the system.
Often yes, if the temperature difference is caused by pressure leaks in the supply runs or a crushed flex duct to that zone. At a 1958 block home off NW 22nd Avenue, our tech ran camera inspection on the return and found the trunk collar at the air handler separated by a two-inch gap, with the original galvanized supply runs leaking at every takeoff. After a negative-pressure source removal clean, we mastic-sealed and mesh-taped the joints, reconnected the crushed flex run to the rear bedroom register, and buttoned the plenum – the homeowner’s musty odor complaint stopped and static pressure dropped measurably at the blower motor. If the ductwork is simply undersized for the load, we tell you that too. Call (361) 326-5060 for an exact diagnosis.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving West Little River since 2004.




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