Duct Sealing in Fort Lauderdale - Tested First, Written Price Second

Fast, Reliable Duct Sealing Across Fort Lauderdale

Duct sealing in Fort Lauderdale typically runs $850 – $2,400 for a whole-home system, with most single-family jobs falling between $1,200 and $1,800. We schedule by appointment, arrive inside the quoted window, and give you a written price before any work starts. Call (361) 326-5060 for a free estimate.

Call (361) 326-5060

We’ve worked in Fort Lauderdale long enough to know the difference between a routine seal job and one that follows water intrusion. Our crews serve Fort Lauderdale from our Miami-area dispatch office, and we’re familiar with the slab-on-grade construction in Victoria Park, the shared chases in beachside condos, and the original galvanized ductwork still running through 1920s bungalows in Sailboat Bend. When your ducts are leaking conditioned air into a hot attic or pulling humid outdoor air through a compromised return, your AC runs longer, your bills climb, and your indoor humidity stays stuck where mold likes it. That’s the problem we solve.

Why Hollis Air Duct Cleaning Is Fort Lauderdale’s Preferred Duct Sealing Company

Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. We operate under The Garrison Standard: written prices, written guarantees, and technicians who show up uniformed, background-checked, and on time. In Fort Lauderdale, that standard matters because too many homeowners have watched a low quote balloon once the crew is inside.

Our 365-Day Done Right Promise covers every duct sealing job in writing. If the seal fails or the problem returns within a year, we come back 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. When you’re dealing with post-storm moisture in your ducts, you need a human who can get a crew scheduled, not an automated system telling you to call back Monday.

Roy Castellanos leads our operation, and every technician works under The Garrison Code: arrive inside the window, price in writing, complete the job by the book, leave the site clean. That’s accountability you can verify before anyone walks through your door.

HVAC Duct Sealing in Fort Lauderdale

HVAC Duct Sealing in Fort Lauderdale is often the missing piece after repeated mold cleanings or sky-high summer electric bills. The job involves pressurizing the duct system to locate leaks, then sealing joints, seams, and connections with mastic and mesh or aerosolized sealant depending on access. In Fort Lauderdale’s climate, where AC runs nearly nonstop from March through November, even a 15% duct leakage rate can add hundreds to your annual cooling costs and keep indoor humidity above the 60% threshold where mold thrives.

Most Fort Lauderdale homeowners need duct sealing when they notice uneven cooling between rooms, musty smells that return after cleaning, or utility bills that spike without explanation. A typical whole-home HVAC duct sealing job in Fort Lauderdale runs $850 – $2,400, with simpler single-zone repairs starting around $400 – $700. Condos with shared chases or homes with buried slab ductwork may run higher due to access challenges.

Leak Detection and Pressure Testing

We start every job with a duct blaster or pressure pan test to quantify leakage. In Fort Lauderdale’s older homes, we often find return leaks pulling hot, humid attic air directly into the system, which overloads the coil and strains the compressor. The test gives us a baseline and lets us show you the before-and-after improvement in writing.

Mastic, Mesh, and Aerosol Sealing Methods

Accessible joints get hand-sealed with mastic and fiberglass mesh, the standard for durability in high-humidity environments. For buried or inaccessible duct runs, we use aerosolized duct sealant that finds and fills leaks from the inside. We match the method to your home’s construction, not force one approach on every job.

Duct Repair in Fort Lauderdale

Duct Repair in Fort Lauderdale frequently follows the same storms and flooding that make duct sealing necessary. The job involves replacing collapsed, corroded, or water-damaged sections; rehanging detached runs; and repairing access holes or pest damage. In Fort Lauderdale’s housing stock, we see a lot of original flexible ductwork from the 1970s and 80s that’s brittle from heat exposure, plus galvanized steel trunks in pre-1960 homes that have rusted through at the seams.

Homeowners need duct repair when they feel no airflow from certain vents, hear whistling or rattling, or find insulation debris blowing from registers. A typical duct repair in Fort Lauderdale costs $300 – $900 for isolated section replacement, while extensive re-ducting of a whole system can run $2,000 – $4,500. We always inspect the full system first; repairing one collapsed run while leaving three leaking joints untouched wastes your money.

Post-Flood Damage Assessment

After water intrusion, we don’t guess. We run camera inspections, take moisture readings at each supply and return, and document visible microbial growth with photos. This determines whether a section can be cleaned, dried, and sealed, or whether replacement is the only safe option. Our documentation follows NADCA guidelines and has been accepted by insurers serving Fort Lauderdale policyholders.

Condos and Shared Chases

Beachside and intracoastal condos in Fort Lauderdale often share vertical duct chases between units. Sealing or repairing only your branch while a neighbor’s leaky return pulls unfiltered air through the same chase can defeat the work entirely. We inspect the chase configuration and recommend solutions that actually address the pressure dynamics, not just the visible symptoms.

Trusted Brands We Service in Fort Lauderdale

Our equipment roster includes Nikro negative-air machines for containment during repair work, Honeywell and Aprilaire filtration products for post-sealing air quality improvement, and Abatement Technologies HEPA vacuums for cleanup in occupied homes. We stock common duct fittings and mastic compounds locally, so Fort Lauderdale jobs don’t wait on parts shipments. When we recommend a filtration upgrade after sealing your ducts, we’re specifying products we’ve installed and tested, not reading from a catalog. The same tools and materials we use in commercial buildings across South Florida are what we bring to your home in Fort Lauderdale.

Common Duct Sealing Problems We See in Fort Lauderdale Homes

• Slab-on-grade moisture wicking. In Victoria Park and Sailboat Bend, original flex duct buried under slabs or run through low chases absorbs groundwater after heavy rains. Sealing over wet duct traps moisture permanently; we test first, replace when readings stay above 16% wood moisture equivalent.
• Attic heat degradation. Ranch homes west of US-1 often have flex duct in unconditioned attics where summer temperatures exceed 140°F. The insulation crumbles, the inner liner cracks, and every joint becomes a leak point. Sealing alone won’t fix brittle material that needs replacement.
• Shared chase cross-contamination. Condos along the intracoastal and beach corridor have return chases that connect units vertically. We seal one apartment’s ducts and still smell the neighbor’s cooking or mildew because negative pressure pulls air through unsealed sections. The fix requires chase isolation, not just branch sealing.
• Post-outage standing water. Hurricane season power outages leave air handlers idle with condensate in drain pans and duct low spots. Crews that seal before confirming the blower motor, drain line, and airflow are corrected trap that moisture inside. We verify mechanical function before we seal.

Pricing for Duct Sealing in Fort Lauderdale, FL

We Also Serve Cities Near Fort Lauderdale

Our crews work throughout Broward County, including Plantation, Pompano Beach, Hollywood, and Coconut Creek. Scheduling and dispatch are coordinated from our Miami-area office, with local technicians serving each community. If you’re searching for Duct Sealing in Fort Lauderdale or nearby, we cover your area with the same written pricing and 365-Day Done Right Promise.

FAQs About Duct Sealing in Fort Lauderdale