Duct Sealing in North Lauderdale - Leakage Measured, Then Priced in Writing

Fast, Reliable Duct Sealing Across North Lauderdale

Duct sealing in North Lauderdale typically runs $450 – $1,200 for a standard single-family home, depending on how much of the system has failed. Most jobs in this city also include duct repair work, since the two go hand in hand in older homes. We serve every North Lauderdale neighborhood from Kimberly Boulevard to the area around Hampton Pines Park, usually able to schedule within a few days of your call. If your AC runs but certain rooms never cool down, or your electric bill keeps climbing while airflow stays weak, the problem is rarely the unit itself. It’s the ductwork leaking. Call us at (754) 354-3644 and we’ll send a background-checked tech to take a look.

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

North Lauderdale homeowners keep calling us back because we write the price down before any tool comes off the truck. Roy Castellanos leads our team, and he runs every job under The Garrison Standard: arrive inside the quoted window, price in writing, complete the work by the book, and leave the site cleaner than we found it. That’s not marketing language. It’s a checklist every tech follows on every job.

Our crews know North Lauderdale’s housing stock. We know the 1960s ranch homes near Southwest 81st Avenue. We know the duplexes off Rock Island Road. And we know what happens to ductwork in this city’s shallow attics after 40 or 50 years of South Florida humidity. That local knowledge matters when you’re deciding between sealing and replacing. We’ll tell you which one actually makes sense for your home, not whichever one pads the invoice.

Duct Repair in North Lauderdale

Duct Repair in North Lauderdale is usually the half of the job people didn’t know they needed. You call because your AC is running constantly and the back bedrooms feel like a sauna. We open the attic and find a supply run of flex duct that’s collapsed under its own wet insulation, or a section of original fiberglass ductboard that’s come apart at the seam. The repair means cutting out the failed section, replacing it with properly sized and supported duct, and sealing every joint so the air you paid to cool actually reaches the register. A straightforward duct repair in North Lauderdale runs $250 – $650 per failed section. Full-system repairs on old ductboard plenums typically land between $800 and $1,500.

Collapsed Flex Runs and Detached Boots

Flex duct sags. In North Lauderdale’s flat-roof homes, it sags faster because condensation collects on the insulation and adds weight the original supports were never designed to carry. That’s how a 25-foot supply run ends up disconnected from the boot above the hallway ceiling, dumping cooled air into an attic that’s already 130 degrees in July.

Ductboard Seam Failures

Original fiberglass ductboard from the 1960s through 1980s degrades in this city’s humidity. The foil facing peels, the board softens, and the taped seams let go. We see plenum leaks on nearly every North Lauderdale home with original ductboard still in place, even on systems that were “just cleaned.” Cleaning removes the debris. Sealing is what stops the air from escaping through the cracks.

Air Duct Sealing in North Lauderdale

Air Duct Sealing in North Lauderdale closes the gaps that cleaning alone can’t fix. The work involves applying water-based mastic to accessible duct joints, wrapping any failing connections with UL181-rated tape, and sealing the return plenum and supply boots so the system holds pressure. North Lauderdale homes built before 1990 rarely have sealed duct systems by modern standards. The original installers taped the joints with cloth duct tape that’s now brittle and peeling, leaving gaps that can account for 20 to 30 percent of total air loss. Whole-system air duct sealing in North Lauderdale runs $450 – $1,200 for a typical 1,500 – 2,200 square foot home. That’s the honest range, and the price we write before work starts doesn’t move.

Mastic Sealing on Accessible Joints

Mastic is the trade-standard sealant for ductwork: a thick paste that goes on wet and cures into a durable, airtight barrier. We apply it to every accessible joint, from the air handler connection out to the supply boots. When the system is sealed properly, your blower motor doesn’t have to work as hard, which means lower energy use and a longer equipment life.

Return Plenum Sealing

The return side of the system is where North Lauderdale’s humidity does the most damage. Warm, moist attic air gets pulled into the return plenum through gaps, and that’s what feeds microbial growth inside the ducts. Sealing the return plenum cuts that moisture load at the source.

Trusted Brands We Service in North Lauderdale

We stock and service duct systems and filtration products from Honeywell, Aprilaire, and Guardsman, so North Lauderdale customers don’t wait on parts that have to ship from out of state. Our techs work with these brands daily and know which components hold up in this climate. Whether you need a Honeywell media filter cabinet sealed into the return plenum or Aprilaire components integrated with existing ductwork, we explain what each part does in plain terms before any work starts. No jargon, no upsell. Just the parts your system needs, available quickly because we keep common components on the truck.

Common Duct Sealing Problems We See in North Lauderdale Homes

• Fiberglass ductboard degradation. Original ductboard from the 1960s through 1980s absorbs North Lauderdale’s humidity over the decades, shedding fibers and losing structural integrity. Even after cleaning, the plenum leaks air through seams and corners that have softened and pulled apart.
• Collapsed flex duct on flat roofs. The Kimberly Boulevard corridor is known for this. Condensate soaks the insulation wrap, the flex duct sags under the weight, and the run either kinks or pulls completely away from the supply boot. It’s a failure mode you rarely see in Fort Lauderdale’s steeper, better-ventilated attics.
• Cracked mastic on metal joints. Older metal duct systems were sealed with mastic decades ago, and North Lauderdale’s near-year-round AC use creates thermal cycling that cracks those seals. The leakage comes back progressively, and homeowners usually notice rising bills before they notice the airflow drop.
• Disconnected supply boots. The original mechanical fasteners rust out in this humidity. A boot that’s no longer mechanically connected to the ceiling register lets conditioned air escape into the attic and pulls attic air back through the gap when the system cycles off.

Pricing for Duct Sealing in North Lauderdale, FL

We Also Serve Cities Near North Lauderdale

Our North Lauderdale crews regularly work in Fort Lauderdale, Pompano Beach, Plantation, and Sunrise for customers with the same aging duct systems and the same humidity problems. If you’re in one of those cities, you get the same approach. Learn more about our Duct Sealing services or see how we serve the wider area at North Lauderdale.

FAQs About Duct Sealing in North Lauderdale