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 Boca Raton
We dispatch crews to Boca Raton from our Miami office, and most west Boca and beachside appointments book within a few business days. If you live in a 1970s villa off Clint Moore Road, a seasonal condo near the Intracoastal, or a newer tower downtown, we know the ductwork you’re dealing with. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Boca Raton’s Preferred Duct Sealing Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Duct Sealing in Boca Raton crews have worked on everything from original fiberboard flex in west Boca villas to tight mechanical chases in luxury high-rises along A1A. Boca Raton homeowners call us back because we show up inside the quoted window, price the job in writing before we touch anything, and leave the site clean. The Garrison Standard requires it.
Our technicians are background-checked and uniformed. You’ll know who’s arriving before they walk in. Every duct sealing job 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. No negotiation, no runaround.
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.
Air Duct Sealing in Boca Raton
Air Duct Sealing in Boca Raton means closing the gaps, disconnected joints, and degraded collar connections that let conditioned air leak into your attic, crawl space, or wall cavities before it reaches your rooms. In this climate, those leaks do more than waste money. They pull hot, humid attic air into the system, which raises the dew point inside your duct runs and gives mold the moisture it needs to grow. A typical whole-system sealing job in Boca Raton runs $1,200 – $2,800 depending on duct accessibility, the extent of damage, and whether source removal is needed first.
When Sealing Makes Sense
Call us when your A/C runs constantly but rooms stay uneven, when your energy bill spikes without explanation, or when you feel weak airflow at registers farthest from the air handler. In Boca Raton’s subtropical climate, these symptoms often point to leaks in unlined flex duct or failed mastic at the plenum connections.
What We Do Not Recommend
We do not seal over wet or microbially active duct material. Trapping moisture inside fiberboard or flex duct with a fresh layer of sealant guarantees the musty smell returns within weeks. Our Duct Sealing team inspects first, dries or replaces compromised sections, then seals the sound ductwork.
Duct Sealing Services in Boca Raton
Duct Sealing Services in Boca Raton cover inspection, source removal of contaminated material, mechanical sealing of joints and collars, and post-sealing pressure testing to verify the system holds. We use professional-grade equipment from Rotobrush and Nikro, including rotary brush systems for agitation and negative-air machines to capture debris before it enters your living space. For filtration upgrades tied to sealing work, we stock Honeywell, Aprilaire, and Guardsman products sized to your air handler’s capacity. A typical partial sealing of a compromised zone runs $450 – $900; whole-system sealing with full access averages $1,800 – $2,800 in this market.
Legacy Duct in West Boca
Homes and villas built in the 1970s and 1980s, particularly west of I-95 in communities like Boca West, often still have original fiberboard or unlined flex duct. These materials sag, tear at hanger points, and trap condensation. Sealing here requires sizing mastic and reinforcement to softer, more porous duct walls, not the rigid metal or sealed flex found in newer construction.
High-Rise Mechanical Chases
Downtown and beachside towers present the opposite problem: duct runs squeezed into tight chases with limited access panels. We coordinate with building management on access, work within HOA maintenance windows, and use smaller-diameter inspection tools to verify seal quality where our hands cannot reach.
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 Boca Raton
We carry professional-grade equipment and filtration products from Rotobrush, Nikro, Honeywell, Aprilaire, Abatement Technologies, and Guardsman. For Boca Raton customers, this means we stock the mastics, collars, and register boots that match your existing system rather than ordering parts and making you wait. Our rotary brush systems and negative-air machines are the same tools commercial crews use on larger buildings. We explain what each piece does and why it matters to the air moving through your home, because a disciplined tradesperson should be able to answer that in plain terms.
Common Duct Sealing Problems We See in Boca Raton Homes
- Condensation-saturated fiberboard after hurricane outages. When power drops for days during June through November, stagnant humid air sits inside unlined duct. The material absorbs moisture like a sponge. Sealing over it without drying and source-removal traps that water and the mold spores with it.
- Disconnected flex at attic hanger points. In west Boca’s 1980s villas, original flex duct sags where straps have degraded. The gap looks small but bleeds 20-30 percent of conditioned air into the attic. We find these with camera inspection and pressure testing, not guesswork.
- Failed register boots in seasonal condos. Units that sit vacant for months near Palmetto Park Road or along the Intracoastal develop gaps where the duct meets the ceiling register. The collar seal dries and cracks. When the owner returns and fires up the A/C, the leak pulls attic dust and humidity directly into the bedroom.
- Upsold fogging “sanitizers” that replace actual sealing. A crew sprays a chemical fog and leaves. The condensation path inside the duct remains open. The microbial problem returns. Sealing the leak source is what stops the moisture intrusion; fogging is cosmetic at best.
Pricing for Duct Sealing in Boca Raton, FL
Whole-system duct sealing in Boca Raton typically runs $1,200 – $2,800. Partial sealing of one or two compromised zones runs $450 – $900. What moves you within that range: how much of the duct is accessible without cutting drywall, whether we need to remove and replace water-damaged flex or fiberboard first, and if your system requires pressure testing to verify the seal.
We give you one flat price per system, agreed in writing, before any work starts. No per-vent pricing. No teaser coupon that balloons once the technician is inside. The price does not move at the door. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Boca Raton
Our crews work throughout Palm Beach and Broward counties, including Deerfield Beach, Delray Beach, Coconut Creek, and Pompano Beach. Scheduling and dispatch are coordinated from our Miami office, with local crews serving each area. If you’re just outside Boca Raton city limits, we can likely still book you within the same window.
Serving Boca Raton, FL - Our Local Coverage Area
We’re based in the Boca Raton 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 Boca Raton
Stagnant, humid air sits inside your ductwork when the A/C is off for days. In unlined flex or fiberboard duct, that moisture gets absorbed and mold begins growing within 48 to 72 hours. When power returns and the system kicks on, the blower pushes those musty odors through every register. We inspect with a camera, remove the contaminated material under negative pressure, dry the remaining duct, and seal the joints so humid attic air stops entering. Call (361) 326-5060 if you’re smelling this now.
Fogging does not fix it. A chemical mist sprayed into dirty ductwork kills some surface mold but does nothing about the moisture source that let it grow. In Boca Raton’s climate, that source is almost always a leak pulling humid attic air into the system. Sealing the leak path stops the moisture intrusion. Source removal of contaminated material handles what’s already there. We do not sell fogging as a substitute for this work. Call (361) 326-5060 for an inspection that shows you exactly where your leak is.
West Boca condos from the 1970s and 1980s usually have soft fiberboard or unlined flex duct that tears and sags. We inspect with a camera, remove saturated sections, reinforce hanger points, and apply mastic sized to porous material. Downtown high-rises have metal duct in tight chases; we seal with foil tape and mastic rated for higher static pressure, and we coordinate building access through management. The tools differ. The standard does not. Call (361) 326-5060 and we’ll tell you which applies to your building.
Seal before you return for the season. A condo with dormant A/C and closed-up rooms accumulates humidity in the duct runs. If you seal the leaks before firing the system, you prevent the blower from pulling that stagnant, possibly microbial air into your living space on day one. We also check your filter and blower motor condition, because sealing a system with a clogged filter or struggling motor just creates pressure problems elsewhere. Call (361) 326-5060 to schedule before your return date.
Sealing helps, but not as much as it should. A filter with too high a MERV rating for your air handler chokes airflow and strains the blower. The motor runs hotter, airflow drops, and the pressure imbalance can actually open new leaks at weak joints. We check filter sizing and blower amp draw as part of every sealing evaluation. If your system needs a filter downgrade or blower service first, we’ll tell you before we quote the seal. Call (361) 326-5060 for that evaluation.
A homeowner in the Boca West corridor called us after a week-long post-hurricane outage left her 1978 villa smelling musty every time the A/C kicked on. Using a camera inspection and agitation tools under negative pressure, we found saturated fiberboard flex in a supply run feeding two bedrooms. After source removal and HEPA filtration we sealed the compromised joints and the register collars, and the odor cleared by the next cooling cycle. That’s the difference between treating the symptom and fixing the path.
Boca Raton’s split housing stock – legacy unlined flex in west Boca versus tight high-rise chases downtown – means duct sealing is genuinely worth paying for when it stops moisture intrusion at the source. It is not worth paying for when it’s sold as a fogging upsell over wet, dirty duct that should be removed first. We tell you which situation you’re in before we write the price.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Boca Raton since 2004.