Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across North Bay Village
Duct sealing in North Bay Village typically runs $850 – $2,400 for a whole-home system, with most condo and apartment jobs falling between $1,100 and $1,800 depending on access and the extent of leakage. We’re Hollis Air Duct Cleaning, and our crews handle Duct Sealing throughout this island city regularly, dispatching from our Miami office to reach the Harbor Island, Treasure Island, and North Bay causeways without the delays that mainland outfits face. If your vents blow weak, your energy bill climbs, or you smell musty air from shared chases in your building, call us at (361) 326-5060. We’ll put a written price in your hand before any work starts, and every seal is backed by our 365-Day Done Right Promise.
Why Hollis Air Duct Cleaning Is North Bay Village’s Preferred Duct Sealing Company
We’ve been sealing ducts across South Florida since 2004, and North Bay Village has become one of our most frequent stops. The island geography means we’ve built relationships with building managers at properties like the Cielo on the Bay and the Grandview Palace, so we know the approval process and the access protocols before we arrive. Roy Castellanos, who leads Hollis, insists that every technician working in North Bay Village understands how salt corrosion and shared chases change the job. Our phones are answered by a live person 24/7, and we schedule arrival windows we actually keep. Background-checked, uniformed technicians show up prepared, price the work in writing, and leave the site clean. That’s The Garrison Standard, and it’s how we’ve earned repeat calls from residents along the 79th Street Causeway and Kennedy Causeway corridors.
Duct Insulation in North Bay Village
Duct Insulation in North Bay Village addresses a problem most island residents don’t realize they have: sweating, corroded ducts in unconditioned spaces that bleed cooled air into attics and garages before it ever reaches the vent. In this market, adding or replacing insulation on existing ductwork typically costs $600 – $1,500, with full re-insulation of a condo system running $900 – $1,800 depending on linear footage and access difficulty. The subtropical humidity and salt-laden air from Biscayne Bay mean that uninsulated or poorly insulated metal ducts deteriorate faster here than almost anywhere else in South Florida.
When Insulation Fails in Waterfront Buildings
Condensation on duct exteriors is common in North Bay Village’s older condos, especially those on Harbor Island where original fiberglass wrapping has compressed or torn. We strip the degraded material, treat any surface corrosion, and install fresh insulation rated for high-humidity marine environments.
Sealing Before You Insulate
Insulating leaky ducts traps moisture inside the system. We always pressure-test and seal joints first with mastic or foil tape, then insulate. In buildings with shared chases, this sequence prevents pressurized leaks from forcing conditioned air into neighboring units.
HVAC Duct Sealing in North Bay Village
HVAC Duct Sealing in North Bay Village focuses on closing gaps, cracks, and disconnected joints in the forced-air system that waste energy and pull contaminants into the airflow. For a typical condo or apartment here, professional sealing runs $850 – $1,800; larger single-family homes or townhomes with complex duct layouts range $1,400 – $2,400. We use a blower-door or duct-blaster test to quantify leakage before and after, so you see the improvement in actual CFM numbers, not just a technician’s word.
Shared Chase Containment Protocols
High-rise and mid-rise buildings along Treasure Island and North Bay often have vertical duct chases serving multiple floors. Our crews seal these with temporary containment barriers and negative-air machines from Nikro to prevent mastic fumes or loosened debris from migrating into adjacent units during the work.
Salt-Damaged Metal and Flex Duct Repair
Galvanized ductwork in waterfront buildings corrodes at seams and hangers, creating leaks that standard tape won’t hold. We cut out degraded sections, replace with proper gauge metal or reinforced flex, then seal with mastic rated for the temperature swings these systems see running nearly year-round.
Trusted Brands We Service in North Bay Village
We stock sealing and filtration components from Aprilaire, Abatement Technologies, and Guardsman, plus we run Rotobrush rotary systems when chase cleaning precedes the seal. For North Bay Village customers, this means we rarely wait on parts. A corroded damper, failed flex connector, or compromised fire-smoke damper in a Harbor Island high-rise can usually be sourced and installed same visit. Our technicians carry the common sizes and fittings for mid-century and 1970s-era systems found throughout the city’s condo stock, so you’re not paying for a second trip while a part ships from Orlando.
Common Duct Sealing Problems We See in North Bay Village Homes
- Cross-unit odor migration through shared chases. In older bayfront condos on Harbor Island, inadequate fire dampers and unsealed penetrations let cooking smells, smoke, and mold spores travel between floors. The constant bay breeze and negative pressure from exhaust fans make this worse, and it takes coordinated sealing plus building management approval to fix properly.
- Corroded seams in galvanized ductwork from salt air exposure. Metal ducts in buildings directly on Biscayne Bay develop pinhole leaks and separated joints within 15 – 20 years, far faster than inland equivalents. We find this most often in original 1960s – 1970s systems that have never been opened.
- Disconnected flex duct in attic and garage runs. Many North Bay Village units have supplemental ducts running through unconditioned spaces where heat and humidity degrade the plastic connections. The flex pulls away from collars, dumping cooled air into the attic and starving the vent.
- Failed mastic from repeated humidity cycling. DIY or handyman-grade sealing jobs common in the city’s rental stock use hardware-store tape or thin mastic that cracks after a few seasons of expansion and contraction. We remove the old material and apply commercial-grade sealant rated for continuous operation in 90% relative humidity.
Pricing for Duct Sealing in North Bay Village, FL
Most duct sealing jobs in North Bay Village fall between $850 and $2,400, with the majority of condo and apartment work landing in the $1,100 – $1,800 range. Single-family homes or townhomes with more linear footage and harder access push toward the higher end. What moves the number: the number of duct runs, whether we need to coordinate with building management for shared chases, the extent of corrosion repair or section replacement, and whether insulation removal and replacement is part of the scope. We do not quote per-vent teaser prices that balloon once we’re inside. One flat price per system, agreed in writing, before any sealant is opened. Estimates are free, and we explain exactly what that price covers and what would trigger a change order (rare, and always discussed first). Call (361) 326-5060 to schedule.
We Also Serve Cities Near North Bay Village
Our Duct Sealing in North Bay Village crews are part of a larger South Florida operation that also handles Air Duct Cleaning in North Bay Village and Dryer Vent Cleaning in North Bay Village, with full service extending to Jacksonville, Miami, Tampa, and Orlando. Scheduling and dispatch run through our Miami office, but the technicians who reach your door know the local buildings and the local conditions.
Serving North Bay Village, FL - Our Local Coverage Area
We’re based in the North Bay Village 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 About Duct Sealing in North Bay Village
Prices in North Bay Village run roughly parallel to Miami proper, typically $850 – $2,400, though condo jobs here often cost slightly more due to shared-chase coordination and building management requirements that single-family homes in Coral Gables or Pinecrest don’t face. Call (361) 326-5060 for an exact quote on your unit – estimates are free.
We seal ducts across all three islands: Harbor Island, Treasure Island, and North Bay itself, including buildings along the 79th Street Causeway, Kennedy Causeway, and Treasure Island roadway. If your building has a North Bay Village address, we service it.
We dispatch from our Miami office and typically schedule North Bay Village appointments within 2 – 4 business days of your call, with flexibility for building-mandated access windows. We do not promise same-day dispatch – duct sealing requires preparation, material loading, and often building coordination – but we do promise we will arrive inside the window we give you.
We answer calls 24/7 and will schedule urgent jobs as quickly as building access and material availability allow, but duct sealing is not an emergency service like a burst pipe. If you have active water intrusion, electrical issues, or a failed fire damper, we may refer you to the appropriate trade first, then return to seal once the hazard is resolved.
Every duct sealing job is covered by our 365-Day Done Right Promise: if the seal fails, if leaks recur, or if any covered component we touched needs rework within one year, we return and make it right at no charge, including a free second visit. This is written on every invoice, not implied. The guarantee applies to our workmanship and materials; pre-existing structural or corrosion damage we documented before starting is excluded.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving North Bay Village since 2004 as part of the Garrison Partners family.