Fast, Reliable Duct Repair & Sealing Across Fort Lauderdale
Duct repair and sealing in Fort Lauderdale typically costs $280–$650 for most residential jobs, with flex duct replacement running $45–$85 per linear foot and metal duct repair averaging $200–$400 per section. We’re usually able to diagnose and quote same-day, and most repairs are completed in a single visit. If your vents are blowing weak, your AC runs constantly, or you’re noticing musty odors when the system kicks on, call us at (833) 628-3661 for a free estimate.
We’ve been crossing the county line from Miami to Fort Lauderdale for 11 years now, and we know the difference between a Coral Ridge attic in July and a Plantation crawlspace in February. Michael Brown, our owner and lead technician, handles every job personally — no rotating subcontractors, no franchise crews learning your house on the clock. Fort Lauderdale’s canal network, salt air, and nonstop AC demand create duct problems you won’t find in Orlando or even Boca Raton. We built our Duct Repair & Sealing practice around solving them.
Why Apex Air Duct Cleaning Service Miami Is Fort Lauderdale’s Preferred Duct Repair & Sealing Company
Our reputation in Fort Lauderdale wasn’t built through ads — it was built through 867 verified reviews averaging 4.9 stars, many from repeat customers in ZIP codes 33307, 33308, 33309, and 33310 who’ve watched Michael arrive personally, diagnose honestly, and fix what actually needs fixing. We’re owner-operated and owner-present: the same technician who answers your questions is the one sealing your joints and testing your airflow.
Response time matters in Fort Lauderdale, where a duct leak in August doesn’t wait. We typically schedule Fort Lauderdale appointments within 24–48 hours, and we carry the parts to complete most flex duct repairs, metal duct patching, and mastic sealing on the spot. From cleaning to repair to sanitizing — handled in one visit, with professional-grade Rotobrush and Nikro equipment and the same 11 years of single-trade focus we bring to every job.
Our Duct Repair & Sealing Services in Fort Lauderdale
Duct Sealing
Leaky ductwork in Fort Lauderdale doesn’t just waste money — it pulls superheated, humidity-saturated attic air directly into your living space, forcing your AC to run longer and harder. We pressurize the system, locate every gap with smoke testing, then seal joints and connections with mastic sealant rated for South Florida’s temperature extremes. In canal-adjacent neighborhoods like Middle River Terrace, where attic moisture is relentless, proper sealing prevents the condensation that breeds mold inside your supply lines.
Flex Duct Repair
Flex duct is the workhorse of Fort Lauderdale’s 1950s–1970s housing stock, and it’s where we see the most failures. The inner liner delaminates. The insulation compresses. The wire helix corrodes through from years of salt-laden humidity. We replace damaged sections with insulated flex duct — R-6 or R-8 depending on attic conditions — and secure every connection with mechanical fasteners before mastic goes on. No tape-only jobs. In Coral Ridge and the neighborhoods along the Middle River, flex duct collapse from heat-plus-moisture is so common that we carry 25-foot replacement rolls standard on every Fort Lauderdale truck.
Metal Duct Repair
Older Fort Lauderdale homes and many coastal high-rises along the A1A corridor still run galvanized steel ductwork. Salt air penetrates shared chases, corrodes seams, and creates pinhole leaks that whistle and waste pressure. We patch corroded sections with matching gauge metal, seal with mastic, and reinforce at stress points. For severely degraded runs, we’ll recommend replacement with insulated flex or fiberglass duct board — always with Fort Lauderdale’s humidity load in mind.
Duct Insulation
Uninsulated or degraded duct insulation in a Fort Lauderdale attic is a mold incubator. Attic temperatures hit 130–140°F regularly, and when your 55° supply air passes through a thin or torn jacket, condensation forms instantly. We reinsulate with formaldehyde-free fiberglass wrap or replace the entire duct run with pre-insulated flex, depending on condition and access. In snowbird homes that sit closed through June, July, and August, this upgrade pays for itself in prevented mold remediation.
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 Fort Lauderdale
We work with Honeywell, Aprilaire, and Abatement Technologies components — the same air quality brands specified by commercial restoration contractors — and we stock common repair parts so Fort Lauderdale customers aren’t waiting on Miami warehouse transfers. Our mastic sealants, flex duct, and insulation materials are rated for continuous exposure to 180°F attic temperatures and 95% relative humidity, which is exactly what your ductwork faces from April through November. When we repair a system, we use parts that outlast the conditions that broke the original.
Common Duct Repair & Sealing Problems We See in Fort Lauderdale Homes
- Flex duct liner delamination from canal-driven condensation. In neighborhoods like Coral Ridge and Middle River Terrace, we regularly find flex duct where the inner poly liner has separated from the insulation layer, creating airflow restrictions and mold reservoirs. The combination of 130°F attic heat and humidity from Fort Lauderdale’s inland canals degrades the adhesive faster than in drier inland markets.
- Metal duct corrosion in coastal high-rises. Buildings along Galt Ocean Mile and the A1A corridor draw salt-laden air through shared duct chases and fan-coil units. We see rusted seams, corroded hanger straps, and degraded fiberglass duct board that leaks conditioned air into wall cavities instead of living spaces.
- Mold colonization in snowbird-shuttered homes. Fort Lauderdale’s large seasonal population means thousands of properties sit closed through the peak-humidity months, then reopen with AC blasting. The shock temperature drop releases mold spores that have been colonizing damp ductwork all summer, triggering immediate allergy symptoms and musty odors.
- Collapsed duct runs in original 1960s–1970s systems. Concrete block homes in ZIP codes 33304, 33305, and 33308 often still run first- or second-generation flex duct that’s simply reached end of life. The wire helix fatigues, the duct sags across attic trusses, and airflow drops by 30–50% before homeowners notice the problem.
Pricing for Duct Repair & Sealing in Fort Lauderdale, FL
| Service | Typical Range in Fort Lauderdale |
|---|---|
| Duct sealing (whole system, mastic) | $280–$450 |
| Flex duct repair (per linear foot, replaced) | $45–$85 |
| Metal duct repair (per section, patched) | $200–$400 |
| Duct insulation replacement | $3.50–$6.00 per linear foot |
| Mastic sealant touch-up (localized) | $150–$280 |
| Air leak detection and mapping | $120–$180 (waived with repair) |
What moves you within these ranges? Attic access difficulty, duct material, extent of corrosion or mold, and whether we’re working around live AC or can shut down temporarily. High-rises with shared chases take longer per linear foot than open attic jobs in single-family homes. We quote upfront after inspection — no open-ended billing. Call (833) 628-3661 for your free estimate; most Fort Lauderdale appointments are scheduled within 24–48 hours.
We Also Serve Cities Near Fort Lauderdale
We regularly cross into Lauderhill, Plantation, Broadview Park, and Lauderdale Lakes for duct repair and sealing calls — the same canal-humidity conditions extend throughout central Broward County. If you’re in one of these neighborhoods and noticing weak airflow, temperature imbalances between rooms, or musty odors when the AC cycles, we cover your area with the same owner-present service we bring to Fort Lauderdale proper.
Serving Fort Lauderdale, FL — Our Local Coverage Area
We’re based in the Fort Lauderdale 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 Fort Lauderdale
Canal-adjacent humidity accelerates flex duct liner delamination and metal duct corrosion by 30–50% compared to drier inland Florida markets. Fort Lauderdale’s 300-plus miles of inland canals create moisture infiltration from all four property lines, not just oceanfront exposure, so even homes miles from the beach face attic humidity levels that degrade ductwork year-round. If your vents smell musty or your AC runs constantly, call (833) 628-3661 — we’ll inspect for canal-driven moisture damage and quote repair or sealing.
Most 33304 homes of that era need at least partial flex duct replacement, not just repair — the original or first-replacement ductwork has typically exceeded its 15–25 year service life in Fort Lauderdale’s heat and humidity. We inspect for liner delamination, insulation compression, and hanger corrosion; if damage is localized, we repair sections, but widespread degradation means full replacement is more cost-effective long-term. Call (833) 628-3661 for a free inspection and honest assessment.
We use mastic sealant rated for continuous high-humidity exposure, insulated flex duct with R-6 or R-8 value depending on attic conditions, and corrosion-resistant mechanical fasteners — never tape-only connections that fail in Fort Lauderdale’s heat. For metal duct in coastal high-rises, we specify galvanized or aluminum patch materials and reinforce at stress points. Our materials come from the same suppliers serving commercial restoration contractors, not big-box retail stock.
Run a dehumidistat-controlled dehumidifier at 55% relative humidity while you’re away, and schedule duct inspection and sealing before you reopen — the shock-mold-release when AC blasts into damp ductwork is what triggers symptoms. We also recommend upgrading to sealed, insulated duct runs that don’t allow attic humidity to penetrate the supply stream. Call (833) 628-3661 before your return; we can inspect, seal, and sanitize so your first breath indoors doesn’t trigger an allergy attack.
Yes — we repair and seal shared ductwork in condo buildings along the A1A and Galt Ocean Mile corridors, coordinating with building management for access and working within HOA maintenance agreements. These systems accumulate salt-laden debris and corrosion between cleanings, and we use portable negative-pressure equipment that contains dust without disrupting neighboring units. Call (833) 628-3661 to discuss your building’s access requirements and schedule.
Written by Michael Brown, Owner at Apex Air Duct Cleaning Service Miami, serving Fort Lauderdale since 2013.