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.
Fast, Reliable Duct Sealing Across Country Club
Duct sealing in Country Club, FL typically runs $450 – $1,200 for a whole-home seal depending on accessibility and whether we find corroded plenums or crushed flex runs that need repair first. Most Country Club jobs take a half day, and we price them in writing before touching anything. Call (361) 326-5060 for a free estimate.
We’ve been driving to Country Club since Hollis opened in 2004, and our crews know the difference between a 1965 ranch off Palm Avenue and a 1980s Florida-style home near the Country Club of Miami. The housing stock here is older than most of Miami-Dade, and that means original rigid metal ductwork, galvanized plenums with decades of salt-air exposure, and flex runs that got crushed during a roof repair after some past hurricane season. Dispatch and scheduling run through our Miami office, but the tech who shows up at your door lives in South Florida and has already worked on homes with your exact floor plan.
Why Hollis Air Duct Cleaning Is Country Club’s Preferred Duct Sealing Company
Country Club homeowners call us back because we show up inside the window, price in writing, and leave the site clean. That’s The Garrison Standard, and it’s how every Hollis location operates.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. The 365-Day Done Right Promise covers every duct sealing job in writing: if the seal fails or the musty smell returns within a year, we come back at no charge, including a free second visit.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule.
We don’t compete on the lowest teaser price. We compete on discipline: written price before work starts, equipment from Rotobrush and Nikro, and a guarantee our competitors rarely match in writing.
Duct Repair in Country Club
Duct Repair in Country Club usually means fixing what decades of humid air, salt particulate, and storm repairs have done to original 1960s – 1980s systems. The typical repair runs $280 – $650 for reconnecting crushed flex runs, patching corroded plenum sections, or replacing disconnected returns found during inspection. We see this work as separate from sealing because repair restores physical integrity first; sealing comes after and holds the fix.
Crushed Flex Runs from Roof Work
After hurricane seasons, Country Club attics often contain flex duct that’s been stepped on, strapped too tight, or buried under new insulation during a roof repair. Our techs locate these with camera inspection, then reconnect or replace the run before any sealing work begins. Sealing a crushed duct is pointless; it needs airflow first.
Pinhole Corrosion in Galvanized Plenums
Country Club’s salt-laden air eats at galvanized steel over time. We find pinholes in plenums that standard foil tape won’t hold. Our repair neutralizes the corrosion, coats the pit, then seals with mastic rated for humid conditions. Tape alone fails within months here.
Air Duct Sealing in Country Club
Air Duct Sealing in Country Club addresses the conditioned air leaking into your attic through gaps at plenum joints, disconnected boots, and seams in the supply trunk. In this climate, every cubic foot of cooled air you lose costs you money 365 days a year because the AC never shuts off. Whole-home sealing typically runs $450 – $1,200, with simpler partial seals starting around $280 for accessible single-trunk systems.
Mastic Sealing for Humid Climates
We use duct sealing mastic, not foil tape, on metal joints in Country Club homes. Mastic stays flexible in heat and humidity, and it fills irregular gaps that tape can’t bridge. In a 140°F attic with dew points above 70°F, tape adhesive degrades; mastic doesn’t.
Sealing After Source Removal
Sealing dirty ducts traps mold and debris inside. Our Duct Sealing process includes source removal with HEPA filtration and rotary brush agitation first, then sealing the clean system. In Country Club, where biofilm grows year-round, the order matters.
Trusted Brands We Service in Country Club
Hollis carries professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies on every Country Club job. We stock mastic, collars, and flex duct locally so we’re not waiting on parts while your attic sits open. For filtration upgrades after sealing, we source Honeywell, Aprilaire, and Guardsman products, the same brands commercial crews use. If your system needs a component we don’t have on the van, our Miami office coordinates same-day pickup. Most Country Club sealing jobs finish in one visit because we’ve already seen the duct configurations this neighborhood builds.
Common Duct Sealing Problems We See in Country Club Homes
- Pinhole corrosion in galvanized plenums from salt-laden air under MIA flight paths. This hidden damage is rare in inland Miami-Dade subdivisions with newer ductwork, but in Country Club it’s routine. Sealing must neutralize and coat the pits, not just tape over them.
- Flex duct crushed by hurricane-season roof repairs, then hidden under fresh insulation. Homeowners feel weak airflow in one room and assume it’s the vent; it’s actually a disconnected run above the ceiling.
- Undersized returns in 1960s – 1980s ranches that pull attic air through gaps because the return path can’t match the supply. Sealing without addressing return capacity pressurizes the wrong spaces.
- Mastic failure from sealing over active biofilm. In Country Club’s year-round humidity, mold left inside a sealed duct recolonizes fast. Source removal comes first, always.
Pricing for Duct Sealing in Country Club, FL
Whole-home duct sealing in Country Club runs $450 – $1,200. Partial sealing of a single accessible trunk starts around $280. Duct repair, when needed before sealing, adds $280 – $650 depending on whether we’re reconnecting flex, patching a plenum, or replacing a crushed run.
What moves the price: attic accessibility, the condition of original metal versus flex duct, whether we find corrosion requiring neutralization and coating, and how many disconnected runs need repair before sealing can hold. We inspect with a camera first, then write the price down. It doesn’t move at the door.
Every estimate is free. Call (361) 326-5060 and we’ll schedule a look.
We Also Serve Cities Near Country Club
Hollis crews travel throughout South Florida from our Miami office. We also run Duct Sealing in Country Club and surrounding areas including Jacksonville, Miami, Tampa, and Orlando. Each location operates independently under The Garrison Standard with the same written pricing and 365-Day Done Right Promise.
Serving Country Club, FL - Our Local Coverage Area
We’re based in the Country Club 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 Country Club
Country Club’s homes run AC 365 days a year with no winter dry-out period, and the salt-laden air under MIA’s flight paths accelerates duct corrosion that northern Miami-Dade doesn’t see. Sealing here isn’t just about energy bills; it’s about stopping humid, unfiltered attic air from being pulled into a system that never shuts off. Call (361) 326-5060 for a free inspection.
Most 1970s metal ductwork in Country Club can be sealed if the plenum and trunk are structurally sound. We camera-inspect first; if we find pinhole corrosion, we neutralize and coat it before sealing. Replacement only enters the conversation when the metal is perforated beyond repair or the trunk has collapsed. Call (361) 326-5060 and we’ll tell you which category you’re in.
The first sign is usually a musty smell from the master-bedroom return when the AC kicks on in the morning. That odor means humid attic air is entering through a gap or disconnected boot, and the overnight stagnation lets mold spores concentrate. If you smell it in Country Club, you have a leak. Call (361) 326-5060.
Hurricane-season roof work and attic traffic often crush or disconnect flex duct, and power outages let humidity spike inside sealed systems. Post-storm, we see a surge of calls for re-sealing after temporary repairs fail. We inspect for storm damage first, then seal with mastic rated for the humidity that follows every outage. Call (361) 326-5060 if your system hasn’t been checked since the last major storm.
Yes. Our source removal, inspection, and sealing procedures follow NADCA guidelines: clean first, seal second, verify with visual inspection. We document the before condition with photos and show you the after. The 365-Day Done Right Promise backs the work in writing. Call (361) 326-5060 to schedule.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Country Club and South Florida since 2004.




Before
After
Before
After
Before
After