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 West Palm Beach
We seal ducts in West Palm Beach homes where the subtropical humidity turns small leaks into major mold problems. Our crews are dispatched from the Miami office and serve West Palm Beach neighborhoods including El Cid, Flamingo Park, and the north-end mid-century tracts without the delays you get from out-of-county outfits. Call (361) 326-5060 for a free estimate with a written price before any work starts.
Why Hollis Air Duct Cleaning Is West Palm Beach’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Duct Sealing team has handled the specific failure modes that West Palm Beach’s climate and housing stock produce. Homeowners in historic districts and newer gated communities alike call us back because we document every job with before-and-after photos and a written moisture assessment, not just a handshake.
Our technicians arrive uniformed and background-checked, inside the quoted window, with the price already written down. That’s The Garrison Standard. If the seal fails or moisture returns within a year, our 365-Day Done Right Promise covers a free second visit to make it right. No negotiation, no runaround.
Phones are answered by a live person 24 hours a day, 7 days a week. When a summer storm leaves water stains around your vents, you don’t wait until Monday for answers.
Duct Sealing Services in West Palm Beach
Duct Sealing Services in West Palm Beach address a problem most homeowners don’t know they have until the electric bill spikes or mold appears around the registers. We seal supply and return ductwork using mastic compound and mechanical fasteners at joints, plenums, and penetrations where conditioned air escapes into unconditioned attics or crawlspaces. In West Palm Beach, this matters more than in drier climates because every cubic foot of cooled air you lose is replaced by humid outside air that your system must dehumidify again. A typical whole-house duct sealing job in West Palm Beach runs $1,200 – $2,400 depending on system size and accessibility.
Attic and Crawlspace Sealing
Most West Palm Beach ductwork runs through vented attics that breathe the same 85-degree, 75-percent-humidity air we get nine months a year. We seal the building envelope where ducts cross these spaces, not just the joints, so condensation doesn’t re-form the moment your compressor cycles off.
Post-Storm Emergency Assessment
After a hurricane or heavy summer storm, water stains near vents often mean ductwork has taken on moisture. Our crew inspects with cameras, documents visible mold or standing water, and determines whether sealing and antimicrobial treatment will suffice or if sections must be replaced.
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 Palm Beach
Duct Insulation in West Palm Beach is what keeps sealed ducts from becoming condensation factories. Even perfectly sealed metal runs in a vented attic will sweat when the inside surface hits the dew point, which happens constantly here. We wrap accessible ductwork with Guardsman-approved insulation and seal the vapor barrier with mastic, creating a thermal break between your 55-degree supply air and the 130-degree attic. A typical attic duct insulation job in West Palm Beach runs $800 – $1,800 depending on linear footage and whether existing insulation is saturated and must be removed first.
Vapor Barrier Restoration
Storm-saturated insulation loses its R-value and becomes a mold reservoir. We remove waterlogged material, treat the duct surface with antimicrobial solution, and install new wrap with a continuous vapor seal so humidity can’t reach the metal.
Historic Home Retrofits
Galvanized ducts in 1920s – 1950s West Palm Beach homes often lack any original insulation. We install wrap around accessible runs without disturbing plaster or architectural details, and we flag rusted-through sections that need replacement before sealing traps contaminants inside.
Trusted Brands We Service in West Palm Beach
We stock parts and materials from Rotobrush, Aprilaire, Abatement Technologies, and Guardsman so West Palm Beach customers aren’t waiting on shipments while their ducts grow mold. Our rotary brush systems and negative-air machines are the same units commercial crews use, and our filtration products meet the standards insurers expect to see documented after a storm claim. When we recommend a specific sealant or insulation wrap, we tell you the manufacturer and why it fits your particular duct material and location.
Common Duct Sealing Problems We See in West Palm Beach Homes
- Sealed joints, sweating runs. A competitor taped the joints with mastic but left the duct exposed in a vented attic. The seal held. Condensation inside the duct continued, and mold returned within one cooling season because the building envelope itself wasn’t sealed.
- Skipped moisture assessment after roof leaks. A crew cleaned the ducts but never checked whether insulation around the air handler plenum was saturated. The homeowner smelled must again in six weeks because the mold reservoir was never removed.
- Sealed rusted galvanized without replacement. In Flamingo Park, we found a 1940s supply trunk that had been sealed over with mastic despite rust holes you could push a finger through. The seal trapped decades of debris inside and choked the blower motor until it failed.
- Oversized AC cycling off before dehumidifying. Common in West Palm Beach high-rises and newer construction. The system cools the air fast but shuts off while relative humidity is still 65 percent, so ducts stay moist and microbial growth accelerates even in sealed systems.
Pricing for Duct Sealing in West Palm Beach, FL
A typical whole-house duct sealing job in West Palm Beach runs $1,200 – $2,400. Attic duct insulation runs $800 – $1,800. What moves you within those ranges: system size (single-story ranch versus two-story with zones), accessibility (crawlspace versus open attic), whether existing insulation is saturated and must be removed, and whether we find rusted galvanized sections that need spot replacement before sealing.
We give one flat price per system, agreed in writing before any work starts. No per-vent pricing. No add-ons at the door. Every job includes before-and-after photos and a written moisture assessment. Call (361) 326-5060 for an exact quote; estimates are free.
We Also Serve Cities Near West Palm Beach
Our crews work Duct Sealing in West Palm Beach and surrounding communities including Palm Beach, Greenacres, North Palm Beach, and Palm Beach Gardens. The same written pricing, same 365-Day Done Right Promise, same live-answer phones apply across the service area.
Serving West Palm Beach, FL - Our Local Coverage Area
We’re based in the West 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 West Palm Beach
If the ductwork is structurally intact with no rust holes, separated seams, or collapsed flexible sections, sealing plus antimicrobial treatment and insulation replacement usually suffices. We document this with camera inspection footage, moisture meter readings, and before-and-after photos so your insurer can see why replacement wasn’t necessary. Call (361) 326-5060 and we’ll assess at no charge.
The combination of year-round humidity, oversized AC systems that cycle off before dehumidifying, and ductwork running through vented attics that draw in subtropical outside air creates constant condensation. Inland cities like Wellington have lower attic dew points and less moisture load. West Palm Beach ducts need sealing that addresses the building envelope, not just the joints.
Sealing alone won’t stop mold if colonies are already established. Every post-storm or high-humidity job we do in West Palm Beach includes antimicrobial treatment and moisture assessment as standard. Sealing prevents recurrence by eliminating the condensation source; treatment addresses what’s already growing.
We provide dated camera inspection video, moisture meter readings with location notes, before-and-after photos of each sealed run, a written moisture assessment explaining why replacement wasn’t indicated, and itemized materials used including Guardsman or Abatement Technologies products. This package has been accepted by adjusters serving West Palm Beach policyholders.
High-rise ducts are typically flexible ductwork in a common chase with limited access; we seal from the register side and use negative-air containment to protect neighboring units. El Cid homes have rigid galvanized in vented attics with original plaster and architectural details we protect; we often work from the attic and must replace rusted sections before sealing. The humidity challenge is the same; the method changes with the building.
In El Cid, we pulled the registers on a 1948 home with original galvanized supply and return ducts and found standing condensate in a low horizontal run and visible mold at the air handler. The homeowner had seen a ceiling stain after a heavy summer storm and assumed it was a roof leak. Our crew set up negative pressure with HEPA filtration at the trunk line, used camera inspection and agitation tools to document the mold, then sealed and reinsulated the accessible runs with Guardsman-approved wrap and mastic rather than replacing the entire system. We gave the homeowner before-and-after photos and a written moisture assessment so their insurer could see exactly why sealing was the right repair and replacement wasn’t needed yet.
Because West Palm Beach ducts sit in vented attics and crawlspaces that draw in the same subtropical outside air that the AC just spent energy cooling, duct sealing here has to prioritize sealing the building envelope where ducts cross unconditioned space, not just taping joints, or the system re-condenses moisture the moment it cycles off. This is a bigger factor in WPB than in inland cities like Wellington or Royal Palm Beach, where attic dew points are lower.
Ready to stop throwing cooled air into your attic? Call Hollis Air Duct Cleaning at (361) 326-5060 for a free estimate. We’ll give you a written price before any work starts, show up uniformed and on time, and stand behind the seal with our 365-Day Done Right Promise. That’s The Garrison Standard.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving West Palm Beach since 2004.