Fast, Reliable Duct Repair & Sealing Across Hollywood
Duct repair and sealing in Hollywood, FL typically runs $280–$750 for most residential jobs, with same-day diagnosis available when you call (833) 628-3661. We’re based in Miami and regularly on the road through Broward County — Hollywood is a core market for us, not an afterthought.
Hollywood’s housing stock tells a story you won’t find in Pembroke Pines or Coral Springs. The central ZIP codes — 33020, 33021, 33023 — are packed with postwar CBS tract homes built from the 1950s through the 1970s. Many still run original fiberglass duct board or early flex duct that’s been cooking in South Florida humidity for forty, fifty, sometimes sixty years. That matters because brittle, delaminated, or leaking ductwork doesn’t just waste energy — it distributes mold spores, fiberglass particulate, and attic contaminants into every room your family breathes in. We built our Duct Repair & Sealing practice around exactly these legacy-system failures.
Our owner Michael Brown carries 11 years of single-trade experience in air duct and HVAC cleaning, and he serves as lead technician on every Hollywood job. We run professional-grade Rotobrush and Nikro negative-pressure systems — the same equipment commercial restoration contractors use — and we handle everything from spot-sealing a disconnected flex run to full duct board replacement and mastic resealing. One call, one technician who answers for the work.
Why Apex Air Duct Cleaning Service Miami Is Hollywood’s Preferred Duct Repair & Sealing Company
We’ve earned 867 verified reviews averaging 4.9 stars — and a significant share of that volume comes from repeat Hollywood customers and their referrals. That didn’t happen by accident. Owner-operated and owner-present means Michael Brown is the same person who reads your review, returns your call, and shows up at your door. No rotating subcontractors, no franchise crew where you never see the same face twice.
Our response time to Hollywood is typically same-day or next-day because we’re already running Broward routes several times weekly. We know the difference between a 1960s Hollywood Lakes CBS home with original duct board and a 1990s Emerald Hills split-level with flex duct in the attic — and we adjust our approach accordingly. That local fluency saves time and prevents the guesswork that leads to callbacks.
The proof is in the numbers: 867 jobs reviewed, 4.9 stars. Near-perfect at high volume. That’s not a handful of cherry-picked testimonials — it’s a documented record across hundreds of verified jobs, many of them right here in Hollywood.
Our Duct Repair & Sealing Services in Hollywood
Duct Sealing
Leaky ductwork in Hollywood homes loses 20–30% of conditioned air before it reaches your vents — and in a climate where AC runs twelve months a year, that’s money bleeding into your attic or crawl space every single day. We seal metal trunk lines with mastic sealant (not duct tape, which fails in humidity) and reconnect separated flex duct runs with proper mechanical fasteners and sealed collars. In Hollywood’s coastal environment, we specify mastic formulations rated for salt-air corrosion resistance — standard hardware-store products degrade faster here than inland.
Flex Duct Repair
Flex duct in older Hollywood homes — especially the 1950s–1970s stock near Hollywood Boulevard and Tyler Street — becomes brittle after decades of continuous airflow and temperature cycling. The inner liner cracks, the insulation compresses, and the vapor barrier tears. We can repair isolated damage if the run is otherwise sound, but when brittleness is systemic, replacement with modern R-8 insulated flex delivers better airflow and humidity control. A typical flex duct repair in Hollywood runs $180–$340 per run; full replacement of a compromised section runs $400–$650 depending on attic accessibility.
Metal Duct Repair
Galvanized steel trunk lines in Hollywood’s pre-1980 homes often outlast the fiberglass liner inside them — but the metal itself can corrode at seams, especially where decades of condensation have pooled in low spots. We repair separated seams with mastic and reinforcing mesh, replace rusted sections with matching gauge metal, and verify structural integrity before sealing. In Hollywood’s 33021 corridor, we’ve found metal ducts still serviceable after sixty years while the liner inside them has turned to powder — the metal’s worth saving, the liner isn’t.
Duct Insulation
Uninsulated or degraded duct insulation in Hollywood is a mold accelerator. When cold supply air runs through a hot attic — or warm return air pulls through a cool crawl space — condensation forms on the duct exterior. In Hollywood’s climate, where indoor humidity regularly pushes above 60%, that moisture never fully dries. We install fresh R-6 or R-8 insulation with intact vapor barriers, sealed at all seams, to break the condensation cycle. For homes in Emerald Hills and Hollywood Hills with attic duct runs exposed to afternoon roof heat, proper insulation often drops indoor humidity recovery time by 30–40% after the AC cycles off.
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 Hollywood
We work with Honeywell, Aprilaire, and Abatement Technologies for air quality components, and we stock mastic sealants, insulation wraps, and connection hardware sized for the legacy duct systems common in Hollywood’s older neighborhoods. Our Rotobrush and Nikro cleaning systems handle pre-repair prep — negative-pressure vacuuming before we cut into a duct run, and post-repair verification that seals hold under operating pressure. Parts availability matters for Hollywood homeowners because original duct board dimensions (1-inch and 1.5-inch fiberglass, often custom-cut in the 1960s) aren’t always shelf-stock at big-box retailers. We source from commercial HVAC suppliers in Broward to keep turnaround tight.
Common Duct Repair & Sealing Problems We See in Hollywood Homes
- Fiberglass duct board delamination in pre-1980 CBS homes. In Hollywood Lakes and Emerald Hills, we regularly pull duct board liners that have separated completely from the interior face — the fiberglass becomes a mold substrate and sheds visible particulate into living areas. This failure mode is almost exclusive to South Florida’s older CBS construction where wall cavities hold residual moisture from decades of condensation.
- Flex duct brittleness from continuous AC operation. Hollywood’s year-round cooling means flex duct never gets a seasonal rest. The inner liner hardens and cracks at connection points, creating leaks that pull hot attic air into the supply stream. We see this most in 33023 and 33024 homes with original 1970s flex still in service.
- Ground humidity wicking into slab-on-grade return plenums. Western Hollywood subdivisions in 33027 and 33029 were built on former Everglades wetland where the water table sits inches below slab. That moisture drives up through concrete into return-air plenums, creating biofilm growth that standard sealing alone won’t stop — we address it with vapor-barrier remediation and antimicrobial treatment.
- Salt-air corrosion of exterior duct seams. Homes east of Federal Highway, closer to the Atlantic influence, show faster degradation of exposed metal duct seams and hardware. We specify corrosion-resistant mastic and stainless fasteners for these coastal-exposure repairs.
Pricing for Duct Repair & Sealing in Hollywood, FL
Here’s what duct repair and sealing costs in Hollywood’s current market:
| Service | Typical Range |
|---|---|
| Spot duct sealing (mastic, up to 10 joints) | $280–$420 |
| Flex duct repair (per run, isolated damage) | $180–$340 |
| Flex duct replacement (per run) | $400–$650 |
| Fiberglass duct board replacement (per section) | $350–$580 |
| Metal duct seam repair with mastic/mesh | $220–$390 |
| Duct insulation replacement (per run) | $260–$480 |
| Full system inspection with written report | $150–$220 (credited toward repair) |
What moves the needle: attic accessibility (tight spaces take longer), extent of mold remediation needed before sealing, and whether we’re matching legacy duct board dimensions that require custom cutting. We don’t quote over email for repair work — every Hollywood system is different after decades of modification. Call (833) 628-3661 for a free in-home estimate. We’ll inspect, photograph what we find, and give you a written price before any work starts.
We Also Serve Cities Near Hollywood
Our service radius covers all of Broward County’s central corridor. We regularly run duct repair and sealing calls in Andover, Miramar, West Park, and West Hollywood — often same-day when we’re already on a Hollywood route. If you’re in one of these neighboring cities and dealing with legacy duct issues similar to what we’ve described here, the same technician and equipment apply.
Serving Hollywood, FL — Our Local Coverage Area
We’re based in the Hollywood 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 Hollywood
Hollywood’s combination of year-round AC operation, coastal humidity above 60% indoor relative humidity, and concrete-block stucco construction creates decades of condensation inside wall cavities that northern climates or drier regions simply don’t replicate. The fiberglass duct board liner absorbs this moisture, the adhesive binding it to the metal duct face degrades, and eventually the liner separates completely — becoming both a mold substrate and a source of airborne particulate. We see this failure mode concentrated in Hollywood Lakes, Emerald Hills, and similar pre-1980 neighborhoods where original duct board was never replaced. Call (833) 628-3661 if you’re seeing dust that looks like gray fuzz around your vents — that’s often delaminated liner material.
Isolated cracks at connection points can be repaired with proper mechanical fastening and sealed collars, but systemic brittleness — where the inner liner crumbles when handled — means replacement is the only durable solution. In Hollywood’s 33020–33023 core, we find that flex duct installed before 1985 is typically past repairable condition; the material simply wasn’t formulated for six decades of continuous use in humid airflow. A repair might last one season. Replacement with modern R-8 flex runs $400–$650 per section and solves the problem for twenty-plus years. We’ll show you the condition during our free estimate and give you an honest call.
Western Hollywood subdivisions in 33027 and 33029 sit on former Everglades wetland where the water table can be inches below slab, driving ground humidity upward through concrete into return-air plenums year-round. Standard duct sealing — mastic on joints, tape on seams — doesn’t address this moisture source, so biofilm growth returns even after a “clean” repair. We address it by installing vapor barriers at slab penetration points, treating affected plenums with antimicrobial agents, and sometimes rerouting return paths to avoid direct slab contact. This is specialized work that general handymen or carpet-cleaning crews who added duct cleaning as an upsell typically don’t recognize. Michael Brown has handled this specific western Hollywood condition dozens of times over 11 years.
We specify mastic sealants rated for high-humidity and salt-air exposure — not hardware-store duct tape or generic caulk that degrades in eighteen months. For hardware, we use corrosion-resistant fasteners and collars from commercial HVAC suppliers, not consumer-grade products. Our Rotobrush and Nikro systems handle pre-seal cleaning and post-seal pressure verification. We don’t cut corners on materials because in Hollywood’s climate, a cheap seal fails twice as fast and costs more to redo. Call (833) 628-3661 and we’ll walk you through exactly what goes into your specific repair.
If the galvanized steel trunk is structurally sound — no rust-through, no separated seams beyond repairable length — then yes, the metal often outlasts everything else in the system and is worth preserving. In a 1960 Hollywood Lakes home we serviced, the metal duct behind delaminated fiberglass board was still at 80% integrity after sixty years. We removed the degraded board, sealed the metal with mastic, insulated exterior runs, and saved the homeowner roughly $2,000 versus full metal replacement. The key is honest assessment: we photograph the interior condition, show you what we’re seeing, and price both repair and replacement scenarios so you can decide with real numbers. Free estimates mean no guesswork on your end.
Written by Michael Brown, Owner at Apex Air Duct Cleaning Service Miami, serving Hollywood since 2014.