Before & After Gallery - Hollis Air Duct Miami

Air Duct Cleaning Before & After in Miami, FL

Photos do what promises can’t. Anyone can say they clean air ducts. Showing you the inside of a duct before we start, and the same duct when we’re done, is different. It’s proof. Here are real project narratives from Miami homes, matched with photo placeholders ready to be filled in. Judge the work with your own eyes.

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Recent Transformations

Return Duct Restoration in Coconut Grove

BeforeAfter

This 1970s home near Peacock Park had a return duct caked with what we’d estimate was two decades of accumulated dust, pet dander, and the kind of fine gray particulate Miami’s humidity bakes onto duct walls. The homeowner mentioned dust accumulating on shelves within two days of wiping. We ran our Rotobrush rotary brush system through the return line first to break the bonded layer, then pulled everything out with a Nikro negative-air machine so nothing recirculated into the living space. The after photo shows bare galvanized metal. The homeowner called back a month later to say the dust-on-shelves problem had stopped. That’s the outcome that matters.

Dust-Storm Return Chase in Kendall

BeforeAfter

Some homes in Kendall built during the late 1980s and 1990s used unlined drywall return chases instead of metal duct. That construction style traps dust at a rate that surprises homeowners when they see it. This chase had a quarter-inch of gray powder lining every surface, stirred up every time the system ran. We used the negative-air method to keep the house under suction while mechanical agitation worked the dust loose, then captured the debris at the machine, not in the home. The after photo shows the chase walls scraped clean. Before the job, the homeowner said they’d stopped using the system entirely. Afterward, they sent word that the air smelled neutral for the first time in years, not dusty.

Bathroom Vent and Flex Duct in Hialeah

BeforeAfter

A Hialeah homeowner called after noticing a stale, musty smell coming through the master bath vent. What we found was a flex duct that had collected years of shower humidity, lint, and the kind of dark, spotty growth that loves South Florida’s warm, damp conditions. The line was also partially collapsed, which we flagged before work started. We cleaned what could be safely reached, then talked through duct sealing on the joints where the flex connected to the boot. For porous flex lines in poor shape, we’re straightforward about what cleaning can and cannot do. When replacement is the honest answer, that’s what we tell the homeowner before anything gets done. The photo sequence shows the interior of the line before and after, with the obvious surface growth removed.

Dryer Vent Clearance in Little Havana

The homeowner in Little Havana mentioned the dryer taking two full cycles per load, which is the most common call we get in Miami’s older housing stock. This vent was not partially clogged. It was packed with wet, matted lint from the dryer all the way to the exterior louver. Lint this compacted traps heat, and heat is exactly what you don’t want in a vent line. We cleared the full run, brush and vacuum both, then verified airflow at the exterior termination before packing up. The before photo shows a wall of gray fuzz. The after photo shows the full bore of the pipe, open end to end. The dryer finished the next load in a single cycle. The fire risk drops when airflow returns. That’s not a sales line. That’s physics.

Aging Galvanized Supply Trunk in South Miami

Galvanized steel ducts from the 1960s and 1970s are common in South Miami. They don’t hold up as well as people assume when attic humidity sits on them for decades. This supply trunk had surface rust and dust buildup consistent with what we see across South Florida. The homeowner had several rooms that never received good airflow, partly because the interior walls of the trunk were no longer smooth. With the rotary brush and the negative-air machine running, we stripped the loose oxidation and buildup down to stable metal. The before frame shows an orange-brown interior. The after frame shows clean steel, ready for reassembly. We recommended Duct Sealing on two joints that showed separation, and did it the same visit, mastic per code. Airflow to those weak rooms improved during the final reading. Roy Castellanos walked the whole attic with the homeowner after we finished, because the only thing better than telling someone what we did is showing them.

Pet Hair and Dander Packed Boot in Coral Gables

Two large dogs, one air conditioning system, and a register boot that had become a secondary filter. The homeowner in Coral Gables pulled the register cover one day and found what looked like felt wrapped around the opening. What we see in Miami is that boot blockages reduce airflow to the room and force the system to overwork. For this job, we removed the register, hand-pulled the packed hair, then brushed and vac’d the boot to clear the last of it. From there, the full supply side got the negative-air treatment. The before photo is the kind of image that makes people walk over to their own register and look. The after shows a clean metal throat. The room’s airflow balanced right after the cleaning. Interestingly, the homeowner also noticed the room stayed cooler with the same thermostat setting, which is exactly what we’d expect when a 30 percent blockage gets removed.

Want Results Like These?

You’re seeing the work, not just reading about it. Every job above started with a call to (850) 660-3272. We’ll set an arrival window, put the price in writing before anything starts, and run the job by The Garrison Code: arrive inside the window, complete the work by the book, leave the site clean. Roy Castellanos and the team stand behind it for a full year.

Written by Roy Castellanos, Owner at Hollis Air Duct Miami, serving Miami since 2004.