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 Apollo Beach
Duct sealing in Apollo Beach typically runs $850 – $2,400 for a whole-home system, depending on accessibility and how much of the ductwork needs attention. Most jobs take a single day, and we write the price down before we touch anything. Call (361) 326-5060 for a free estimate.
We’ve worked the canal-front ranches off Flamingo Drive, the Mediterranean stucco homes near Apollo Beach Boulevard, and the slab-built subdivisions inland toward Big Bend Road. Our crews dispatch from our Miami office, but we know this market: the salt air off Tampa Bay, the 1980s – 2000s housing stock, the flex duct sweating in attics that never really cool down. That local knowledge changes what we look for when we climb into your attic. A technician who treats Apollo Beach like any inland Tampa suburb will miss the corrosion pattern that ruins sealed ducts in two seasons.
Why Hollis Air Duct Cleaning Is Apollo Beach’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. In Apollo Beach, our reputation is built on showing up inside the quoted window, pricing in writing before work starts, and leaving the site clean. The Garrison Standard applies to every job: no moving targets, no verbal estimates that balloon once we’re inside.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. Every repair we make carries our 365-Day Done Right Promise in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday for someone to pick up.
Duct Sealing Services in Apollo Beach
Duct Sealing Services in Apollo Beach are often corrosion-control work disguised as an efficiency upgrade. The job involves finding leaks in your supply and return ductwork, then sealing them with mastic and mesh or mechanical fasteners that hold up in humid, salt-laden conditions. We pressurize the system to measure leakage, seal accessible seams in the trunk lines and plenum, and address the return-side leaks that pull hot attic air (and salt aerosol) into your system. A typical whole-home sealing job in Apollo Beach runs $850 – $2,400.
Most Apollo Beach homes built from the 1980s through the 2000s have original galvanized supply trunk lines or flex duct runs in the attic. Both fail differently here than inland. Galvanized pits from the inside when salt aerosol circulates. Flex duct deteriorates where condensation and salt-laden humidity attack the adhesive on seams and the outer jacket.
Leak Detection and Pressure Testing
We start every sealing job with a duct blaster or pressure pan test to quantify what you’re losing. In Apollo Beach, we often find return-side leaks pulling 15 – 30% more unconditioned air than the homeowner expected, especially in canal-front homes where the air handler cabinet sits in a hot garage or attic space.

Mastic Sealing of Trunk Lines and Plenums
Foil tape fails in Apollo Beach attics. We use water-based duct mastic reinforced with fiberglass mesh on galvanized trunk seams and the plenum, applied to clean, dry metal. On a canal-front ranch off Flamingo Drive, we pulled a return grille caked with white salt powder and found the original galvanized supply trunk pitted with rust flakes feeding the air handler. After negative-pressure source removal and HEPA filtration, we sealed the accessible trunk seams and the plenum with mastic and mesh, then replaced the failing flex run to the far bedroom. The homeowner reported the musty ‘bay smell’ at the registers dropped noticeably and the system stopped short-cycling on humid afternoons.

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 Apollo Beach
Duct Insulation in Apollo Beach addresses a problem that inland Florida doesn’t share: attic ductwork that sweats continuously from condensation, then absorbs that moisture into deteriorating insulation where mold and salt residue collect. We remove waterlogged or delaminating insulation, seal the underlying ductwork, then install new insulation with a proper vapor barrier. A typical duct insulation job in Apollo Beach runs $600 – $1,800 depending on linear footage and attic accessibility.
Homes near the canal network off Tampa Bay see this worse than inland properties. The combination of 90-degree attic temperatures, 70-degree conditioned air inside the duct, and ambient humidity near 80% creates constant condensation. Add salt aerosol, and the insulation jacket breaks down faster than the product ratings suggest.
Vapor Barrier Replacement
We use insulation products with intact vapor barriers, properly sealed at seams. In Apollo Beach, a compromised vapor barrier is worse than no insulation at all: it traps moisture against the duct surface and accelerates corrosion of galvanized metal.
Attic Insulation Assessment
We check surrounding attic insulation levels while we’re in the space. Undersulated attics in Apollo Beach force your ductwork to work against extreme temperature differentials, increasing condensation and energy loss. We note what we see and explain it in plain terms; we don’t sell insulation packages unrelated to the duct system.
Trusted Brands We Service in Apollo Beach
Our equipment roster includes Rotobrush rotary brush systems for mechanical agitation inside duct runs, Nikro negative-air machines for controlled debris extraction, and filtration products from Aprilaire, Abatement Technologies, and Guardsman. We stock parts and materials locally for Apollo Beach customers, so we’re not ordering mastic or replacement flex duct while your system sits open. That matters for turnaround, especially when we’re sealing a system that’s actively leaking conditioned air into a 120-degree attic.
Common Duct Sealing Problems We See in Apollo Beach Homes
- Sealing over actively corroding galvanized trunk lines. This traps salt residue and rust flakes inside, so the corrosion continues and the seal fails within a season or two of Tampa Bay humidity cycling. We remove loose scale and treat accessible surfaces before sealing, or we flag replacement needs honestly.
- Foil tape or low-grade mastic on attic flex duct. In canal-front homes, condensation and salt-laden humidity cause adhesive to lift and seams to reopen quickly. We use mechanical fasteners and rated mastic appropriate for the application.
- Ignoring return-side leaks and the air handler cabinet. These pull hot, humid attic air (and salt aerosol) into the system and undo any supply-side sealing work. A complete job addresses both sides of the airflow loop.
- White powdery salt residue on return grilles. Technicians working the Apollo Beach canal front know to check for this telltale sign. It means the duct system is pulling in bay air and corroding from the inside out. Homeowners on streets like Flamingo Drive or Apollo Beach Boulevard often need duct attention every 2 – 3 years instead of the standard 5 – 7, because the salt air accelerates everything.
Pricing for Duct Sealing in Apollo Beach, FL
Whole-home duct sealing in Apollo Beach typically costs $850 – $2,400. Duct insulation runs $600 – $1,800. What moves you within that range: attic accessibility (tight truss spaces take longer), how much of the system is accessible without drywall removal, whether we’re sealing existing metal or replacing deteriorated flex duct, and whether the job includes the return-side plenum and air handler cabinet.
We do not quote per-vent teaser prices that balloon at the door. We give one flat price per system, agreed in writing before work starts. Every estimate is free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Apollo Beach
Our crews work Apollo Beach regularly and also serve Sun City Center, Ruskin, Gibsonton, and Riverview. If you’re in one of these communities and seeing the same salt-air corrosion patterns, the same 1980s – 2000s housing stock, or the same humid-attic duct problems, we apply the same inspection standards and written pricing. Our Duct Sealing team coordinates scheduling from our Miami office and dispatches to your area.
Serving Apollo Beach, FL - Our Local Coverage Area
We’re based in the Apollo Beach 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 Apollo Beach
It’s salt residue from Tampa Bay aerosol being pulled into your duct system through return-side leaks. In canal-front Apollo Beach homes, this is common and it means your galvanized trunk lines or flex duct are corroding from the inside out. Call (361) 326-5060 and we’ll inspect the source; estimates are free.
Every 2 – 3 years for canal-front properties, compared to 5 – 7 years inland. The salt air accelerates corrosion and adhesive failure. We check previous seal work during maintenance visits and flag deterioration before it fails completely.
Sometimes, but only after honest assessment. Sealing over active corrosion traps the problem inside and the seal fails quickly. We remove loose scale, evaluate wall thickness, and tell you straight whether sealing buys you time or whether section replacement is the better spend.
No. Fogging leaves a coating on surfaces but does not remove the biological material or the moisture source that feeds it. In Apollo Beach’s humid climate, that moisture is often condensation from unsealed, uninsulated ductwork in a hot attic. We use negative-pressure source removal with HEPA filtration, then seal and insulate to eliminate the conditions that caused the growth. A fogging upsell without mechanical cleaning and moisture control is a waste of money here.
Water-based duct mastic reinforced with fiberglass mesh, properly applied to clean, dry metal. Foil tape and low-grade mastic fail in Apollo Beach attics within one to two seasons. We also use mechanical fasteners on flex duct connections because adhesive alone won’t survive the condensation and salt-laden humidity cycle.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Apollo Beach since 2004.




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