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 Oakland Park
Duct sealing in Oakland Park typically runs $450 – $1,200 for a whole-home system, depending on whether we’re patching accessible joints or rebuilding crushed runs behind walls. Most Oakland Park jobs take a half day because the 1950s – 1970s ranch and flat-roof homes here have short, reachable duct runs, though canal-side properties often need extra time to dry and seal water-damaged plenums first. Call (361) 326-5060 and we’ll give you a written price before any work starts.
We’ve been crawling through Oakland Park attics and utility closets since 2004. The Garrison Partners family opened our Miami office to dispatch crews throughout South Florida, and Oakland Park sits right in our regular rotation. We know the difference between a Coral Springs ranch on high ground and a canal-side block near Northeast 38th Street where the water table sits two feet below the slab. That local knowledge changes what we bring on the truck and how we quote the job.
Why Hollis Air Duct Cleaning Is Oakland Park’s Preferred Duct Sealing Company
Oakland Park homeowners call us back because we show up in the window we promised, wearing uniforms, with background-checked techs whose names they get before the van turns onto their street. The Garrison Standard means written prices, written guarantees, and a 365-Day Done Right Promise on every job. If the seal fails or a joint opens up within a year, we return and make it right at no charge, including a free second visit.
Our 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. When you’re running AC eleven months a year in Oakland Park’s tropical monsoon climate, duct problems don’t take weekends off.
We price by the system, not by the vent. One flat price per system, agreed in writing before we touch a tool. No teaser coupon that doubles once we’re inside. That’s how we’ve kept our reputation in Oakland Park’s rental duplexes, small apartment buildings, and single-family ranches from the old Dixie Highway corridor to the neighborhoods west of Federal Highway.
Duct Repair in Oakland Park
Duct Repair in Oakland Park means fixing the physical damage that sealing alone can’t address: crushed trunk lines, disconnected collars, rotted fiberboard, and plenums pulling humid attic air because the original builder never sealed them. In a typical Oakland Park ranch, we find short package-unit runs that sag off their boots within a decade, especially in the flat-roof concrete-block homes built between 1955 and 1975. A full duct repair for these homes generally runs $600 – $1,800, with simpler collar reconnections at the lower end and crushed-run rebuilds toward the higher end.
Crushed and Disconnected Runs
Original flex duct in Oakland Park’s older homes was often installed with minimal support straps. Gravity and humidity do the rest. We open the cavity, rebuild the run to proper pitch, and seal it with mastic rated for Florida’s wet climate, not the tape that failed the first time.
Plenum and Air Handler Sealing
The return plenum in many Oakland Park homes sits in a closet or crawlspace that floods seasonally. We dry the assembly, replace waterlogged insulation, and seal every seam so the system pulls conditioned air, not attic soup, through your vents.
Air Duct Sealing in Oakland Park
Air Duct Sealing in Oakland Park targets the gaps, joints, and seams that leak conditioned air into your attic, crawlspace, or walls before it ever reaches your rooms. In a city where AC runs essentially year-round, every cubic foot of cooled air that escapes costs you money twice: once to generate it, once to replace it. A typical whole-home sealing job in Oakland Park costs $450 – $950 for accessible systems, rising to $1,200 if we need to open soffits or chase leaks behind finished surfaces.
Mastic Sealing for Humid Climates
We use duct sealing mastic, a thick paste that hardens into a flexible, waterproof bond. Unlike foil tape, which peels in Oakland Park’s near-100% humidity, mastic adheres to concrete, metal, and fiberboard and stays put through wet season after wet season.
Pressure Testing After the Seal
After we seal, we run a static pressure test to prove the system holds. If the numbers don’t improve, we keep looking until we find the leak. The Garrison Standard requires showing the homeowner the before-and-after readings, not just claiming success.
Trusted Brands We Service in Oakland Park
Our trucks carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, plus filtration and sealing products from Aprilaire and Guardsman. These are the same tools commercial crews use in hospitals and schools, not hardware-store attachments. For Oakland Park’s older housing stock, we stock mastic rated for high-humidity applications and replacement collars sized for the short duct runs common in 1950s – 1970s package-unit systems. That inventory on the truck means we don’t leave your job to chase parts across Broward County. Most sealing and repair jobs in Oakland Park finish in a single visit because we planned for what your neighborhood’s homes actually need.
Common Duct Sealing Problems We See in Oakland Park Homes
- Water-table intrusion at the return plenum. After summer storms, groundwater seeps into air handler closets and crawlspaces in Oakland Park’s low-lying canal districts. The standing water wicks into duct insulation and breaks the seal within a single season, so sealing alone fails unless we dry and seal the plenum and floor first.
- Black biofilm on fiberboard and flex duct. In the older blocks near the canal and along Dixie Highway, ducts often grow visible microbial film within one cooling season. That biofilm eats mastic and sealant adhesion, so taped joints peel off instead of holding, and the leak returns worse than before.
- Sagging, disconnected runs in short package-unit systems. Oakland Park’s 1950s – 1970s concrete-block homes have brief duct runs that seem simple but sag off their collars and crush at bends. Sealing only the visible joint leaves disconnected runs leaking behind walls, which is why we camera-inspect before we quote.
- Humid attic air pulled through unsealed plenums. Many original installations never sealed the air handler’s return plenum at all. In Oakland Park’s climate, that gap pulls 140-degree attic air and near-saturated humidity straight into your system, overworking the coil and driving up electric bills year-round.
Pricing for Duct Sealing in Oakland Park, FL
A typical duct sealing job in Oakland Park runs $450 – $950 for a whole-home system with accessible ductwork. Jobs climb toward $1,200 when we need to open soffits, repair water-damaged plenums, or rebuild crushed runs found during inspection. Duct repair, which addresses physical damage rather than gaps and seams, generally falls between $600 – $1,800 depending on how many runs need rebuilding.
What moves the price: the age and material of your ductwork (original fiberboard costs more to seal properly than modern metal), accessibility behind finished surfaces, and whether we find water damage that needs drying and remediation first. Canal-side homes in Oakland Park often fall on the higher end because of that extra plenum work.
We give one flat price per system, written down before any work starts. No per-vent pricing, no add-ons at the door. Call (361) 326-5060 for a free estimate. We’ll inspect your system, show you what we find, and leave you with a written number you can compare.
We Also Serve Cities Near Oakland Park
Our Oakland Park crews also handle Duct Sealing calls throughout South and Central Florida, including Jacksonville, Miami, Tampa, and Orlando. Each city gets the same Garrison Standard: written price, written guarantee, background-checked uniformed techs, and the 365-Day Done Right Promise. Scheduling and dispatch for Oakland Park are coordinated from our Miami office, with local crews who know the neighborhood.
Serving Oakland Park, FL - Our Local Coverage Area
We’re based in the Oakland Park 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 Oakland Park
Duct sealing in Oakland Park typically costs more than cleaning because sealing requires accessing every joint, boot, and plenum seam, not just vacuuming the interior. In Oakland Park’s older homes, we often find water-damaged plenums, crushed runs, or biofilm-covered fiberboard that must be repaired before any sealant will hold, adding labor and material to the job. Call (361) 326-5060 for a written estimate on your specific system.
Yes, in Oakland Park’s canal-front neighborhoods, we regularly see visible black microbial growth on fiberboard and flex duct within a single cooling season due to near-100% humidity and standing water in crawlspaces. That biofilm degrades sealant adhesion, so we clean and treat the surface before applying mastic, or we replace the affected section entirely. Call (361) 326-5060 if you smell mustiness from your vents.
Standing water in the air handler’s return plenum, rust on the cabinet base, and water-stained insulation around the duct boots are the three clearest signs we check for in Oakland Park homes. After heavy storms, we also look for sagging flex duct in crawlspaces where the water table has risen. Call (361) 326-5060 and we’ll inspect for intrusion points during your free estimate.
Sealing can fix rooms that never cool if the problem is leaking joints or disconnected runs, which we find in about sixty percent of Oakland Park’s older ranches. If the issue is undersized ductwork or a crushed trunk line, sealing helps but won’t fully solve it, and we’ll tell you that before we quote. Call (361) 326-5060 and we’ll run a camera inspection to find out which problem you have.
Sealing older fiberboard duct works if the material is structurally sound and free of heavy biofilm or water damage, which we assess with camera inspection. In Oakland Park’s canal-side homes, fiberboard often reaches a point where replacement makes more sense because microbial growth will break the new seal within a year. Call (361) 326-5060 and we’ll show you what your ducts look like inside before recommending either approach.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Oakland Park since 2004.




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