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 Air Duct Cleaning Across Dunwoody
Air duct cleaning in Dunwoody, GA typically costs $350 – $850 for a full residential system, with most jobs completed in a single visit. We dispatch crews to Dunwoody from our Atlanta scheduling office, and we’ve been clearing attic ducts in neighborhoods from Dunwoody North to Wynterhall since 2004. If you’re smelling musty air when the AC kicks on, or your allergy symptoms spike every fall, your ductwork is likely harboring debris that a standard filter won’t catch. Call (361) 326-5060 for a free estimate with a written price before any work starts.
Why Hollis Air Duct Cleaning Is Dunwoody’s Preferred Air Duct Cleaning Company
We’ve built our reputation in Dunwoody on showing up inside the quoted window and leaving the site clean. Our technicians are background-checked, uniformed, and trained to The Garrison Standard, which means pricing in writing before touching equipment and standing behind the work for a full year. The 365-Day Done Right Promise covers every job: if the work fails within a year, we return and make it right at no charge, including a free second visit. Roy Castellanos leads our operation, and he’s made it clear that a Hollis crew doesn’t leave Dunwoody until the homeowner has seen before-and-after photos of their own ducts and has a written invoice that matches the quoted price.
Dunwoody’s mix of 1960s ranch homes, split-levels, and newer infill near Perimeter Center means no two systems are identical. We know which subdivisions have original galvanized trunk lines, where flex duct was retrofitted in the 1990s, and how the heavy tree canopy in North Springs affects what ends up in attic vents. That local knowledge changes what equipment we bring and how long the job takes, which is why we don’t quote blind over the phone without asking about your home’s age and duct type.
Commercial Air Duct Cleaning in Dunwoody
Commercial Air Duct Cleaning in Dunwoody covers office buildings, retail spaces, medical suites, and multi-tenant properties where code compliance and indoor air quality standards are stricter than residential work. We use Nikro negative-air machines to isolate each zone during cleaning, preventing cross-contamination between occupied spaces. A typical commercial job in Dunwoody runs $1,200 – $3,500 depending on square footage, system accessibility, and whether video documentation is required for insurance or lease compliance. We schedule around your hours to minimize disruption to staff and customers.
Office and Retail Systems
Perimeter Center and the shops along Ashford-Dunwoody Road see heavy HVAC use year-round. We clean supply and return ducts, VAV boxes, and diffusers using Rotobrush rotary agitation combined with HEPA-filtered collection. Before-and-after video is standard on commercial jobs so facility managers have documentation for their files.
Post-Renovation and Code Compliance
Dunwoody’s building codes often require duct cleaning after major renovation or before certificate of occupancy. We provide written certification of completion and can flag any duct damage or leakage that needs repair before final inspection. The price is fixed before we start, with no add-ons for “unexpected contamination” once we’re on site.
Air Duct Cleaning Services in Dunwoody
Air Duct Cleaning Services in Dunwoody address a specific set of problems that generic national pages don’t account for: pest intrusion in attic ducts, mold fed by humid attic air leaking through original unsealed joints, and construction dust in newer homes that overwhelms standard filtration. A typical full residential cleaning in Dunwoody runs $350 – $850, with supply-only or return-only cleaning at the lower end and whole-system jobs with video inspection at the higher end. We don’t price per vent. One flat price per system, agreed in writing before work starts.
Residential Full System Cleaning
Most Dunwoody homes built between 1960 and 1990 in Dunwoody North or Village Mill have original ductwork that leaks and collects debris. We seal the system under negative pressure, agitate trunk lines and branch ducts with rotary brushes, and HEPA-filter all exhaust air. Camera inspection of the return side confirms we’ve reached everything.

Dryer Vent and Duct Sealing Add-Ons
Many Dunwoody homeowners bundle dryer vent cleaning with their duct service, especially in older homes where the dryer duct run is long and prone to lint buildup. Duct sealing with mastic closes the leaks that let humid attic air into your system, which is often the real fix for recurring mold problems after cleaning.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Dunwoody
We carry professional-grade equipment and filtration products from Rotobrush, Nikro, Aprilaire, and Abatement Technologies. Rotobrush rotary brush systems handle the agitation work in residential trunk lines. Nikro negative-air machines isolate commercial zones and protect occupied spaces during cleaning. For filtration upgrades, we stock Aprilaire media cleaners and Guardsman products that fit standard residential plenums. We don’t show up with shop vacs and extension wands. The tools we use are the same ones specified for hospital and school duct maintenance, and we explain what each piece does while we’re working so you understand what you’re paying for.
Common Air Duct Cleaning Problems We See in Dunwoody Homes
- Pest and tree debris in attic duct runs: Unscreened vents in Dunwoody’s mature-canopy neighborhoods let squirrels and birds nest inside flex and galvanized ducts. A routine vacuum without removing the nest material just redistributes it through your home.
- Original unsealed ductwork leaking into humid attic air: Ranch and split-level homes from the 1960s – 80s have joints that weren’t sealed to modern standards. That humid air feeds mold and mildew growth during the May – September AC run. Cleaning without addressing the leaks means the problem returns.
- Construction dust in newer infill homes near Perimeter Center: Renovation and new construction produce fine particulate that overwhelms filters and coats supply and return ducts. The load is different from the pollen and leaf debris in older subdivisions, and it requires more thorough return-side cleaning.
- Collapsed flex duct from nesting activity: Squirrel nests in attic flex runs don’t just block airflow, they collapse the duct entirely. We find this every fall in neighborhoods like North Springs and Wynterhall, and it takes camera inspection to locate the damage.
Pricing for Air Duct Cleaning in Dunwoody, GA
A typical residential full-system air duct cleaning in Dunwoody runs $350 – $850. Supply-only or return-only cleaning falls at the lower end, $250 – $450. Commercial systems start around $1,200 and scale with square footage and zone count. What moves the price: system accessibility (crawl space vs. attic), whether video inspection is requested, the presence of mold requiring treatment, and duct sealing work after cleaning. We do not quote per vent. We do not bait with a low teaser and add charges at the door. The price is written down before any work starts, and it does not move. Call (361) 326-5060 for a free estimate. We’ll ask about your home’s age, duct type, and any symptoms you’ve noticed, then give you a firm range you can plan around.
We Also Serve Cities Near Dunwoody
Our crews cover Dunwoody and the surrounding metro area including Atlanta, South Fulton, Sandy Springs, and Roswell. Scheduling and dispatch are coordinated from our Atlanta office, with local technicians serving each community. If you’re outside Dunwoody city limits but in the northern metro, we can likely reach you inside our standard service window.
Serving Dunwoody, GA - Our Local Coverage Area
We’re based in the Dunwoody 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 Air Duct Cleaning in Dunwoody
Every 3 – 5 years for most Dunwoody homes with original ductwork, but homes under heavy tree canopy in neighborhoods like Dunwoody North or Village Mill may need cleaning every 2 – 3 years due to pest intrusion and debris loading. The combination of unsealed galvanized joints and humid attic air also accelerates contamination. Call (361) 326-5060 and we’ll assess your specific system and environment.
Dunwoody’s dense tree canopy and mature oak population provide habitat for squirrels and birds that seek warm attic spaces when temperatures drop. Unscreened roof vents and deteriorated flex duct create entry points that routine maintenance often misses. In Wynterhall we opened a 1972 split-level whose attic supply ducts were packed with acorns, leaf litter, and a squirrel nest that had collapsed the flex run above the primary bedroom. We set the system under negative pressure with HEPA filtration at the collection point, used agitation tools along the trunk line and branches, camera-inspected the return, then sealed and screened the compromised vents so the nest couldn’t be rebuilt. The musty odor in the hallway cleared within a day.
Not automatically. Atlanta’s humid subtropical climate does encourage mold growth in unsealed duct systems, especially when AC runs constantly from May to September. But mold treatment is only necessary if visual or lab testing confirms active growth. Our camera inspection identifies mold locations; if found, we treat with EPA-registered products and recommend duct sealing to prevent recurrence. Cleaning alone without sealing often wastes money in Dunwoody’s climate.
Dunwoody’s building codes often require duct cleaning after major renovation, and many real estate transactions include it as a contingency. We provide written certification of completion that satisfies code inspectors and buyer agents. For pre-sale cleaning, we include before-and-after video documentation that sellers can share with prospective buyers. Call (361) 326-5060 to schedule with enough lead time for your closing or inspection date.
Rotobrush rotary brush systems for residential agitation, Nikro negative-air machines for commercial isolation and HEPA collection, and camera inspection tools for verification. We also carry Aprilaire and Guardsman filtration products for upgrades. Every job gets the right tool for the duct type and contamination level, not a one-size-fits-all approach. Call (361) 326-5060 for a free estimate and we’ll explain what your specific system needs.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Dunwoody since 2004.




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