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 North Palm Beach
We seal ducts in North Palm Beach homes where salt air, humidity, and decades-old galvanized steel create problems mainland crews rarely see. Our Duct Sealing team dispatches from our South Florida office and carries corrosion-specific repair methods for barrier island housing stock. Call (361) 326-5060 for a written estimate before any work starts.
North Palm Beach sits on a narrow barrier island where the Atlantic Ocean shapes everything from your roof shingles to the inside of your ductwork. Homes east of the Intracoastal Waterway pull salt-laden air through pinhole leaks in ways that Jupiter or West Palm Beach properties on the mainland simply don’t experience. We’ve been called to enough Lighthouse Drive ranches and Anchorage Way two-stories to know the difference between a standard seal job and one that accounts for zinc-oxide corrosion.
Why Hollis Air Duct Cleaning Is North Palm Beach’s Preferred Duct Sealing Company
We’ve built our reputation in North Palm Beach on showing up inside the window, pricing in writing, and leaving the site clean. That’s The Garrison Standard, and it’s how every Hollis crew operates.
Our technicians are background-checked and uniformed. You know who’s walking through your door before they arrive. The price we write down before any work begins is the price you pay. It does not move at the door.
Every duct sealing and repair job in North Palm Beach carries our 365-Day Done Right Promise. If the seal fails, the corrosion returns, or a pinhole reopens within a full year, we come back and make it right 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 voicemail loops, no callback queues, no waiting until Monday to schedule.
HVAC Duct Sealing in North Palm Beach
HVAC Duct Sealing in North Palm Beach is a corrosion-control job first, a pressure-seal job second. The salt aerosol that blows across the barrier island reaches ductwork through attic vents, soffits, and the pinhole leaks that develop in galvanized steel after forty or fifty years of coastal exposure. We seal the accessible joints, plenum connections, and pinholes with mastic and foil tape rated for humid environments, but only after we’ve addressed what’s on the metal surface.
A typical HVAC duct sealing job in North Palm Beach runs $450 – $850 for a single-system home with accessible ductwork in the attic or crawl space. Homes with multiple air handlers, extensive corrosion requiring neutralization, or ducts buried in original slab construction fall toward the higher end.
When Sealing Makes Sense Versus Replacement
Original galvanized ducts from the 1960s or 1970s can often be sealed if the metal retains structural integrity and the corrosion is surface-level. We camera-inspect first. If the zinc-oxide powder has eaten through to bare steel or the duct walls are thinning, we’ll tell you straight that replacement sections will outlast another seal cycle.
What Our Sealing Process Actually Involves
We don’t seal over dirty or corroded surfaces. The mastic won’t bond. Our crews clean with gentle agitation under negative-air containment, neutralize active corrosion, then apply mastic to joints and foil tape to seams. We pressure-test afterward to confirm the system holds.
Duct Repair in North Palm Beach
Duct Repair in North Palm Beach frequently means addressing damage that salt air and humidity have worsened over years or decades. We replace disconnected flex duct runs, patch corroded sections of galvanized trunk lines, and rebuild damaged plenum connections. In homes with original 1950s – 70s flex duct, we take care not to tear the fragile liner with aggressive tools.
Duct repair in North Palm Beach typically costs $280 – $650 for localized fixes: a section of flex duct replacement, plenum rebuild, or several feet of corroded galvanized trunk. Extensive multi-section replacement or air handler cabinet corrosion repair can reach $900 – $1,400.
Corrosion-Damaged Sections
We were called to a 1960s ranch on Lighthouse Drive where the homeowners complained of musty odors from the supply registers and a utility bill that had crept up 20% year over year. Using camera inspection we found the original galvanized supply and return ducts coated in white zinc-oxide powder and several pinhole leaks pulling humid attic air into the system. We cleaned with gentle agitation tools under negative pressure and HEPA filtration, neutralized the corrosion, then sealed the accessible joints and pinholes with mastic and foil tape. The musty odor cleared and the air handler no longer short-cycled from pressure loss.
Fragile Original Flex Duct
Early flex duct in North Palm Beach’s older homes has a thin liner that tears under aggressive brushing. We inspect with cameras before choosing tools. When the liner is intact but the insulation is saturated from humidity, we replace the run rather than attempt cleaning that risks new leaks.
Trusted Brands We Service in North Palm Beach
We carry professional-grade equipment from Nikro, Honeywell, and Aprilaire on every North Palm Beach job. Our Nikro negative-air machines maintain containment during cleaning and corrosion work. Honeywell and Aprilaire filtration products go in when we’re rebuilding plenum connections or replacing air handler components damaged by salt-air exposure. We stock common fittings and mastic compounds for barrier island conditions, so most North Palm Beach repairs don’t wait on parts. If your system uses specialized components, we’ll source them and give you a written timeline before starting.
Common Duct Sealing Problems We See in North Palm Beach Homes
- Sealing over powdery zinc-oxide corrosion on galvanized ducts east of the Intracoastal. The sealant fails to bond and flakes off within months. We clean and neutralize first, then seal.
- Using a fogging sanitizer as a substitute for source removal. It masks musty odors temporarily but does nothing about the pinhole leaks that pull humid salt air into the duct run. Sealing the leaks stops the odor at its source.
- Applying aggressive brushing or high-pressure agitation to fragile early flex duct. Common in 1950s – 70s North Palm Beach homes, this tears the liner and creates new leak paths. We match the tool to the duct condition.
- Ignoring the air handler and blower motor cabinet. Salt-air corrosion and moisture accumulate here too. Sealing the ducts still leaves a contaminated plenum if we don’t address what’s upstream.
Pricing for Duct Sealing in North Palm Beach, FL
Duct sealing in North Palm Beach runs $450 – $850 for most single-system homes with attic or crawl-space access. Factors that move the price: the extent of corrosion requiring neutralization, whether ducts are accessible or buried, and if multiple air handlers need attention. Duct repair, when sections need replacement rather than sealing, typically falls between $280 – $650 for localized work and $900 – $1,400 for extensive replacement.
We give one flat price per system, agreed in writing before any work starts. No per-vent pricing. No add-ons at the door. You’ll see before-and-after photos of your own ducts. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near North Palm Beach
Our crews work throughout Palm Beach County and northern Broward. We regularly seal and repair ducts in North Palm Beach, Palm Beach Gardens, Palm Beach, West Palm Beach, and Jupiter. Each job carries the same written price guarantee and 365-Day Done Right Promise.
Serving North Palm Beach, FL - Our Local Coverage Area
We’re based in the North Palm 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 North Palm Beach
We can seal original galvanized ducts if the metal still has structural integrity and the corrosion is surface-level zinc-oxide powder. We camera-inspect first. If the walls are thinning or perforated, replacement sections are the better long-term value. Call (361) 326-5060 and we’ll assess what’s actually in your attic.
The barrier island’s salt aerosol concentration is measurably higher than mainland Palm Beach Gardens or West Palm Beach. East of the Intracoastal Waterway, that salt reaches attic ductwork and reacts with galvanized zinc coating, producing white powdery zinc-oxide corrosion that mainland homes rarely develop. Your ducts need corrosion-aware sealing methods, not a standard mainland approach.
A fogging sanitizer masks odors temporarily. It does not seal the pinhole leaks that pull humid, salt-laden attic air into your duct runs. Duct sealing stops the moisture intrusion that feeds microbial growth and causes musty smells. We clean source contamination first, seal the leaks, and the odor source is eliminated.
Sealed ducts prevent your air handler from pulling humid attic air into the system, which reduces the latent load your AC must dehumidify. In North Palm Beach’s climate, where ducts rarely dry out, this means shorter run cycles, more consistent temperatures, and less strain on equipment. We’ve seen 15 – 20% efficiency improvements after proper sealing in salt-air corroded systems.
We use Nikro negative-air containment systems, Honeywell filtration components, and Aprilaire media filters on North Palm Beach jobs. Our sealing compounds are rated for humid coastal environments, not standard interior-grade products. Call (361) 326-5060 for specifics on what we’d use in your system.
Ready to stop throwing cooled air into your humid North Palm Beach attic? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free, written estimate. We’ll inspect your ducts with cameras, explain what we find, and give you one flat price before any work starts. Every seal and repair is backed by our 365-Day Done Right Promise.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving North Palm Beach and the South Florida coast.