Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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.
Fast, Reliable Duct Sealing Across Aventura
Duct sealing in Aventura typically runs $450 to $1,400 depending on the unit’s size and how much of the ductwork is hidden behind drywall, and most jobs are completed the same day we start. Our crews know Aventura’s buildings: the towers along Country Club Drive, the gated communities like Aventura Lakes, and the condo lines facing the Intracoastal. If you’ve been told your AC is “fine” but certain rooms never cool, or you smell that stale, musty air when the handler kicks on, call us at (850) 660-3272. We’ll tell you what’s actually going on and put the price in writing before any work begins.
Why Hollis Air Duct Miami Is Aventura’s Preferred Duct Sealing Company
We’ve built our reputation in Aventura on showing up when we say we will and pricing the job before we touch a single register. Our technicians arrive in uniform, background-checked, and ready to explain what they find with a camera scope before recommending any sealant or repair. That matters in this city because so much of the ductwork in Aventura is hidden: behind hallway ceilings, above drywall, inside chase walls. You can’t see the problem, so you need a crew that can show it to you.
The Garrison Standard governs how we operate here. Arrive inside the quoted window. Put the price in writing. Do the job by the book. Leave the site clean. And every bit of that work is backed by the 365-Day Done Right Promise. If the seal fails within a year, Roy Castellanos and his team come back and make it right at no charge. No argument, no re-quote, no fine print. That’s the whole point of hiring a company that stands behind what it does in a building stock as demanding as Aventura’s.
Styles & brands we work with
HVAC Duct Sealing in Aventura
HVAC Duct Sealing in Aventura means closing leaks at joints, boots, and plenums with mastic sealant and UL-listed aluminum tape so conditioned air moves into your rooms instead of leaking into chase walls and above ceilings. In a city where most housing stock is condominium towers built between the 1980s and early 2000s, the duct systems are aging right along with the buildings and were rarely designed for easy access. Aventura homeowners call us when rooms stay humid despite a running AC, when electric bills climb through summer, or when dust reappears days after a cleaning. Sealing the system is often the real fix, and it starts at around $450 for a straightforward single-unit job and runs up to $1,400 when we are working behind drywall with building maintenance coordination.
Mastic Sealing on Metal Ducts
Older Aventura towers used sheet-metal duct risers and branch lines. The joints between those sections corrode in salt air, open up, and leak. We brush on a fiber-reinforced mastic that seals those joints permanently and can be applied to both the interior and exterior of accessible duct sections.
Aeroseal-Style Coating for Inaccessible Runs
When ducts run behind hallway ceilings and inside walls, we use camera scopes to locate leaks before we cut. Then we apply sealant only where needed. In many Aventura condo buildings, no single unit’s ductwork is isolated; we coordinate with building maintenance to avoid disturbing common areas.
Duct Repair in Aventura
Duct Repair in Aventura goes beyond sealing surface leaks; it involves replacing crushed flex runs, reconnecting disconnected boots, and reframing register boxes that have pulled away from the gypsum. We’ve worked in buildings up and down West Country Club Drive where original construction left flex duct crushed behind drywall, pinched by framing, or simply disconnected at the plenum. When that happens, the air handler pulls dusty, humid air from wherever the breach sits. Repair work in Aventura generally runs $300 to $900 per run depending on access, and that cost is agreed upon in writing before we open any wall.
Crushed Flex Run Replacement
Flex duct has a limited service life, and in Aventura’s humid, salty environment, the inner liner breaks down faster than it would inland. We replace damaged runs with new R-8 insulated flex, supported correctly, and seal both ends with mastic and tape before buttoning the ceiling back up.
Boot and Register Reattachment
When boots separate from the drywall or the register, air short-circuits into the wall cavity. We refasten boots with mechanical fasteners and seal the gap with mastic so every cubic foot of conditioned air actually reaches the room it was designed for.
Trusted Brands We Service in Aventura
We work with the equipment already in your building. If your unit has a Honeywell filter cabinet or an Aprilaire media system, we service those as part of any duct sealing or repair job. In Aventura’s high-rise buildings, we also commonly see Guardsman filter racks and Abatement Technologies negative-air setups used by building maintenance teams, and our technicians know how to work alongside them. We keep the sealants, tapes, and flex runs we need on our trucks, so when a building engineer opens a hallway ceiling for us in the morning, we’re not waiting on a parts run to finish the job that afternoon.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Aventura Homes
- Leaky supply ducts pressurizing chase walls. In Aventura’s oceanfront towers, conditioned air escaping into wall cavities hits warm, humid building materials and condenses. Over time, that creates hidden mold growth you can smell but never see.
- Corroded metal joints leaking salt-laden air. The same salt that rusts balcony railings gets pulled through unsealed duct joints. Rust flakes then blow into registers and clog MERV-rated filters, cutting airflow and making your AC work harder.
- Crushed flex runs from original construction. Many 1980s and 1990s Aventura buildings went up fast, and duct runs behind drywall were pinched during framing. Cleaning alone won’t fix a crushed run; it has to be replaced.
- Disconnected boots pulling cavity air. When a return boot separates from the drywall, the system draws air from the wall cavity instead of the room. That air carries dust, mildew spores, and whatever else has accumulated behind the drywall.
Pricing for Duct Sealing in Aventura, FL
A typical duct sealing job in Aventura runs between $450 and $1,400. The range exists because access dictates everything in this city. A single-family home in Aventura Lakes or a first-floor unit with an accessible mechanical closet sits on the lower end of that range. A 20th-floor condo where ducts hide behind hallway ceilings and require building maintenance coordination sits on the higher end. Duct repair work, like replacing a crushed flex run or refastening a disconnected boot, adds $300 to $900 per run. We give you one written price per system before we start, not a per-vent estimate that inflates once we’re inside. Call (850) 660-3272 for a free estimate and we’ll tell you exactly what your building’s setup costs in Aventura’s market.
We Also Serve Cities Near Aventura
While this page covers Duct Sealing in Aventura specifically, our crews regularly work in Miami, Miami Beach, Miami Gardens, and Doral. The buildings are different, but the standard stays the same: written prices, accounted-for technicians, and the 365-Day Done Right Promise. If you live in a neighboring city and want the same level of detail, call and ask.
Serving Aventura, FL - Our Local Coverage Area
We’re based in the Aventura 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 Aventura
We coordinate with building maintenance to locate access points, and we use a camera scope to map the run before cutting any drywall. In many Aventura buildings, the duct chase is accessible from a hallway ceiling panel or a mechanical room penetration, and we work with the building engineer to avoid disturbing common areas. When we do need to open a wall, we cut a clean access panel, do the work, and replace it so the repair is invisible. Call (850) 660-3272 and we’ll tell you what’s likely needed in your specific building.
Yes. Salt accelerates corrosion on metal duct joints, especially in buildings east of US-1 and along the Intracoastal. Galvanized steel joints rust, the sealant originally applied at those joints breaks down, and air leaks form. We see this most often in towers built in the 1980s and 1990s, and the fix is cleaning the joint down to bare metal, applying a fiber-reinforced mastic, and wrapping with UL-listed tape. It’s a permanent repair, not a patch.
Often yes. When supply ducts leak into chase walls, the conditioned air never reaches the rooms it was designed for, and the AC runs longer trying to satisfy the thermostat. That means high humidity, high electric bills, and rooms that never feel right. A camera inspection will show whether the problem is a leak, a crushed run, or a disconnected boot. We won’t sell you sealing if the issue is a failing coil or a clogged filter; we’ll tell you what the scope shows.
Yes. We seal individual unit ductwork, not the building’s central risers. In most Aventura towers, each unit has its own branch lines off the main riser, and we work on those branch lines only. We do coordinate with building maintenance to access riser closets or hallway ceilings, but we never need to interrupt service to neighboring units.
Aventura runs slightly higher than Miami or Miami Gardens because access is harder in high-rise buildings and coordination with building maintenance adds time. Expect $450 to $1,400 in Aventura versus $350 to $1,100 for a single-family home in a nearby city. The price reflects the reality of working in dense condo towers, not a markup for the zip code. Call (850) 660-3272 for an exact quote for your unit.
Written by Roy Castellanos, Owner at Hollis Air Duct Miami, serving Aventura with duct sealing and repair under The Garrison Standard.