A Hollis company - serving Alpharetta, GA

Before & After Gallery - Hollis Air Duct Alpharetta

Every visit starts with

Whole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents

Worth knowing

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.

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Air Duct Cleaning Before & After in Alpharetta, GA

Before-and-after photos tell the truth faster than any warranty language can. You’ll see what we pulled out of real duct systems in Alpharetta homes: the dust, the pet hair, the construction debris, and the rust-colored film that’s been circulating through the return vents. Roy Castellanos has been running crews on these jobs since 2004, and the photos below show what actually changes after a full negative-air cleaning. We keep this gallery honest: every scenario listed here is a job we see regularly in Milton, Cumming, Roswell, and right here in 30004, 30005, and 30009.

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Recent Transformations

Two-Story Windward Home: 14 Years Without a Duct Cleaning

Before — Return duct in a Windward home, before and after Rotobrush rotary brushing with Nikro negative-air suction.

After — Return duct in a Windward home, before and after Rotobrush rotary brushing with Nikro negative-air suction.

The homeowner had lived in the house since 2009 and never had the ducts opened. The return trunk was carrying a half-inch of compacted gray dust, heavy with pet dander from two retrievers. We ran the Rotobrush rotary system through every accessible branch, with the Nikro negative-air machine pulling the dislodged debris out of the system instead of pushing it into rooms. When our technician showed the homeowner the after-photo, she said it looked like a different house. The register in her daughter’s bedroom had been blowing visible dust onto the dresser for years. It stopped after this job.

Post-Renovation Duct Cleaning in Crabapple

Drywall dust is the worst thing we pull out of duct systems. It’s fine enough to bypass a cheap filter, alkaline enough to irritate airways, and it settles into every elbow and boot in the system. This Crabapple kitchen remodel left a cloud of gypsum dust in the supply trunks that the GC’s weekly vacuuming never touched. We sealed off the registers, ran the rotary brushes through each branch, and used the negative-air machine to pull the dust back to the truck-mounted filtration. The after-photo shows duct walls you can actually see, not a white haze. If you’re living through a remodel in Alpharetta, have the ducts cleaned after the final sanding, not before.

Dryer Vent Cleaning in a Johns Creek Rental: Lint Mat Past the Flapper

This dryer vent ran from a second-floor laundry room through an exterior wall, and the flapper had been stuck open for months. That meant the homeowner’s dryer was pushing moist lint into the vent, but the flapper wasn’t sealing, so birds and humidity had a path back in. We disconnected the dryer, ran a rotary brush with flexible rods the full length of the vent, then vacuumed the loose debris from both ends. The after-photo shows the flapper seated flat against the exhaust hood. Clothes dried in 35 minutes again instead of 90.

Mold Odor Behind a Finished Basement Ceiling in Alpharetta’s Providence Plantation

Technician using professional equipment for residential air duct cleaning — Basement supply duct with visible microbial growth before cleaning, and the same duct after cleaning and duct sealing mastic was applied at the joints.

Basement ducts in Alpharetta carry a specific risk: they run through unconditioned space, so warm, moist air moving through cool ducts creates condensation inside the branches. That damp environment attracts whatever the homeowner’s air filter missed. This Providence Plantation basement had a musty odor every time the AC kicked on. We pulled the registers, found a visible film on the duct walls, and ran the full negative-air cleaning. After the ducts were clean and bone dry, we applied duct sealing mastic to the visible joints to stop the air leaks. The odor was gone, and the homeowner’s HVAC system stopped pulling dusty crawlspace air into the finished basement. Duct sealing is more than an efficiency play in those older Alpharetta basements: it’s the difference between cleaning the ducts once and watching the problem return next spring.

Pet Hair and Dander in a Century-Old Alpharetta House Near Downtown

Professional technician performing residential air duct cleaning service with industrial vacuum equipment — Supply duct in a pre-1940 Alpharetta home, matted with pet hair and dander before cleaning. After cleaning, the galvanized steel is visible under the branch line.

Older homes near downtown Alpharetta weren’t built with modern return-air strategies. The single return in the hallway pulls air from every room, which means pet hair and dander from the floors ends up cycling through the system for years. This house had three cats and a single return grille that hadn’t been opened in living memory. We removed the register, found a dense felt-like mat of hair and dust on the interior of the return drop, and removed it by hand before running the rotary system. The after-photo tells the story: clean metal, no clumps, no more cat smell when the heat ran.

Want Results Like These?

Call (762) 769-7145 and Roy or one of our technicians will schedule a duct cleaning at your Alpharetta home. The price goes in writing before we start, and the 365-Day Done Right Promise covers the work for a full year. If it’s not done right, we come back at no charge. We’ll give you before-and-after photos of your own ducts, not just these ones.

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

Before & after

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