Fast, Reliable Duct Repair & Sealing Across Ojus
Most Ojus homes run their air conditioning 365 days a year. In a 1950s CBS ranch off NE 183rd Street or a mid-century build near the Oleta River, that means your ductwork never gets a dry-season break from moisture cycling. We’re Bellows Air Duct & Vent Co., and we’ve been repairing and sealing ducts in northeastern Miami-Dade since 1984. Our Duct Repair & Sealing team covers the 33160 ZIP and surrounding Ojus neighborhoods with same-day response in most cases. Call (844) 685-6342 and you’ll reach a live person, not voicemail.
Why Bellows Air Duct & Vent Co. Is Ojus’s Preferred Duct Repair & Sealing Company
We’ve worked the older ranch streets of Ojus long enough to know what we’re walking into. The concrete block construction, the original flex duct runs, the return chases built into wall cavities - these aren’t surprises to our technicians. They’re patterns we’ve addressed hundreds of times over 42 years.
Our customers in Ojus call us back because we show them the problem before we quote the fix. Every job starts with a camera inspection of the ductwork, and we review the footage together so you see what we see. No bait pricing, no number that changes when we arrive. The price we quote is the price on the invoice.
Our 90-Day Done Right Promise applies to every Ojus job in writing. If the repair or seal doesn’t hold, we return at no charge. No paperwork to file, no argument.
Calls are answered by a live person 24 hours a day. Most repairs are completed in a single visit by background-checked, uniformed technicians who arrive when we say they will.
Our Duct Repair & Sealing Services in Ojus
Duct Sealing
Leaky duct joints in Ojus homes do more than waste cooled air. They pull humid, salt-laden attic or wall-cavity air into the system, accelerating corrosion and microbial growth. We seal supply and return plenums with mastic sealant and reinforced mesh, not tape that peels in the heat. In homes near the Intracoastal corridor, we pay particular attention to sealing at the air handler cabinet, where pressure differentials are highest and unfiltered air infiltration is most damaging.
Flex Duct Repair
The original foil-core flex duct in Ojus’s 1960s and 1970s ranches wasn’t built for the static pressure of modern high-SEER equipment. We see collapsed runs, torn inner cores, and insulation that’s become a sponge for condensation. On NE 183rd Street in Ojus, we replaced a corroded flex duct run in a 1964 CBS ranch where the homeowner’s high-SEER system was collapsing the original foil-core duct. We installed new insulated flex duct with mastic-sealed connections and upsized the return plenum to reduce static pressure, preventing recurrence.
Metal Duct Repair
Where Ojus homes have galvanized metal trunk lines - more common in the 1950s builds - salt air accelerates corrosion at hangers and fasteners. Sagging metal ducts collect moisture and debris, and separated seams blow conditioned air into attics or wall cavities. We repair or replace corroded sections, reinforce hangers with corrosion-resistant hardware, and seal all joints with mastic.
Duct Insulation
In Ojus’s sustained high-humidity environment, uninsulated or degraded duct insulation creates chronic condensation on cold duct surfaces. We replace waterlogged insulation with proper R-value vapor-barrier insulation, sealed at all seams to prevent the moisture cycling that destroys ductboard and promotes mold.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Ojus
We carry professional-grade equipment and materials from Nikro, Honeywell, and Aprilaire - the same brands serious HVAC contractors specify for coastal Florida installations. Our trucks stock insulated flex duct, mastic sealant, and corrosion-resistant fasteners so we’re not waiting on parts while your home sits without cooling. For Ojus’s older systems, we also source compatible fittings for first-generation ductwork that newer suppliers no longer inventory.
Common Duct Repair & Sealing Problems We See in Ojus Homes
- Salt-air corrosion of metal fasteners and hangers. Atlantic air from the nearby Intracoastal corridor attacks exposed metal duct hardware, causing sagging and separation that traps moisture and restricts airflow.
- Chronic wetting of fiberglass-lined ductwork. With relative humidity above 70% most of the year, evaporator coils and supply ductwork stay wet enough to support continuous mold colonization inside the fiberglass lining.
- Return-air chases built into concrete block wall cavities. In many Ojus ranches, the return path is literally the hollow block wall - packed with decades of debris and mold that cannot be vacuumed or brushed without cutting into drywall.
- Collapsed flex duct from high-SEER retrofits. Modern variable-speed blowers create static pressure that original foil-core flex duct was never engineered to handle, causing restricted airflow and equipment strain.
Pricing for Duct Repair & Sealing in Ojus, FL
We’re straightforward about what duct repair costs in Ojus because we’ve done enough of it to know the variables.
| Service | Typical Range in Ojus |
|---|---|
| Duct sealing (mastic, up to 10 joints) | $280 - $450 |
| Flex duct repair/replacement (per run) | $340 - $580 |
| Metal duct section repair | $260 - $520 |
| Return plenum modification or upsizing | $480 - $890 |
| Duct insulation replacement (per run) | $220 - $410 |
| Concrete block chase sealing (custom) | $650 - $1,200 |
Factors that move the number: accessibility of the duct run, extent of corrosion or mold damage, whether the return chase requires custom sealing rather than standard cleaning, and if we need to coordinate with a drywall contractor for wall-cavity access. We disclose the full price before any work begins. Estimates are free. We also offer $50 off any repair over $250, and a free second opinion on any written estimate you’ve already received.
We Also Serve Cities Near Ojus
Our service area extends throughout northeastern Miami-Dade and southern Broward. We regularly perform Duct Repair & Sealing in Ojus and neighboring communities including North Miami Beach, Sunny Isles Beach, Aventura, and Hallandale Beach. The same upfront pricing, camera inspection, and 90-Day Done Right Promise apply in every city we serve.
Serving Ojus, FL - Our Local Coverage Area
We’re based in the Ojus 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 - Duct Repair & Sealing in Ojus
Ojus homes need duct repair more frequently because salt-laden Atlantic air accelerates corrosion of metal hardware, and perpetual air conditioning without a dry season keeps ductwork chronically wet. The combination of salt air and sustained moisture degrades fasteners, insulation, and seals faster than in inland markets with seasonal variation. Call (844) 685-6342 for a free inspection and exact quote.
A return-air chase built into a concrete block wall is a hollow wall cavity used as the duct path for return air, rather than a separate metal or flex duct. In Ojus’s 1950s-1970s CBS ranches, this was common original construction, and these cavities accumulate decades of mold-laden debris that cannot be cleaned without cutting into drywall. It matters because it limits your options - we often must design a custom sealing solution or reroute the return path entirely. Call (844) 685-6342 to discuss what your home specifically needs.
Yes, we can seal block-wall chases, but the method depends on condition and accessibility. In some Ojus homes, we inject closed-cell sealant through small access points; in others, we reroute the return through new flex duct to bypass the wall cavity entirely. We determine the right approach after camera inspection and discuss options with you before quoting. Estimates are free - call (844) 685-6342.
We use corrosion-resistant hardware - including stainless or coated fasteners and hangers - for all Ojus duct repairs because standard galvanized hardware fails prematurely in salt-air environments. This is standard practice on our Ojus jobs, not an upgrade. Call (844) 685-6342 to schedule repair.
Perpetually high humidity means we never seal ducts that are actively wet - mastic and sealants won’t bond to saturated surfaces, and trapped moisture accelerates mold behind the seal. We verify surfaces are dry, address any active leaks or drainage issues first, and select sealants rated for Florida’s moisture load. This takes more time than a dry-climate seal, but it’s the only way the repair lasts. Call (844) 685-6342 for an estimate.
Ready to fix the ductwork in your Ojus home? Call Bellows Air Duct & Vent Co. at (844) 685-6342. We’ll send a technician to inspect your system with a camera, show you exactly what we find, and give you one honest price before any work starts. Most repairs are done in a single visit. And everything we do is backed by our 90-Day Done Right Promise - in writing, no arguing.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Ojus and northeastern Miami-Dade since 1984.