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.
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AfterFast, Reliable Duct Sealing Across Cumming
We’re the crew Hollis Air Duct Cleaning sends to Cumming when a homeowner’s HVAC system is bleeding conditioned air into the attic, crawl space, or wall cavities. Our Duct Sealing in Cumming runs are dispatched from our Atlanta office, and we typically schedule Cumming properties within a few business days, with crews arriving inside the quoted window. We’ve worked enough homes off Buford Dam Road, in the Windermere subdivision, and around Polo Golf & Country Club to know that Cumming’s combination of pine pollen loads, red clay road dust, and builder-grade flex duct from the 2000s building boom creates sealing problems you won’t find in Alpharetta’s denser subdivisions. Call us at (361) 326-5060 for a free estimate, and we’ll give you a written price before any work starts.
Why Hollis Air Duct Cleaning Is Cumming’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our reputation in Cumming is built on showing up squared away and leaving with the job done by the book. We also offer Cumming Dryer Vent Cleaning to keep your home safe and efficient. Roy Castellanos leads our operation, and he expects every technician to follow The Garrison Code: arrive inside the window, price in writing, complete the work to standard, and leave the site clean. Our 365-Day Done Right Promise covers every duct sealing job in writing. If the seal fails or the leak returns within a year, we come back at no charge, including a free second visit. Cumming homeowners don’t get voicemail loops or callback queues. Phones are answered by a live person 24 hours a day, 7 days a week. Our technicians are background-checked and uniformed, so you know who’s walking into your home before they arrive.
Duct Repair in Cumming
Duct Repair in Cumming covers the physical fixes that sealing alone won’t solve: crushed flex runs, disconnected collars, rusted metal trunks, and damaged plenums. In Cumming’s housing stock, we see two distinct repair profiles. Newer subdivisions built during the 2000s-2020s boom often have flexible ductwork that gets pinched during attic work or sagging in low spots where condensation pools. Older lakefront homes around Lake Lanier may have original rigid metal ducts from the 1970s-1990s with corroded seams or failed takeoff connections. A typical duct repair in Cumming runs $280 – $650 depending on accessibility and the extent of damage. We inspect with a camera, show you what we found, and write the price before we touch anything.
When Repair Beats Replacement
Localized damage to a few branch runs or a single plenum connection usually warrants repair. We cut out the damaged section, splice in new material with proper supports, and test static pressure before we leave. If your system is losing 20-30% of its airflow to a single crushed run, repair restores performance without the cost of full replacement.
Lake Home Metal Duct Concerns
Older rigid metal around Lake Lanier often shows rust at the seams where decades of condensation have eaten through the galvanizing. We patch or replace the affected sections, then seal the system as a whole. Cumming’s humid summers make this especially important. Moisture inside an unsealed metal trunk promotes biological growth that spreads through the supply registers.
Air Duct Sealing in Cumming
Air Duct Sealing in Cumming closes the gaps where conditioned air escapes and unconditioned air infiltrates. We use mastic sealant and metal-backed tape at joints, plenum connections, and register boots, then verify with a pressure test. In Cumming’s market, a typical whole-house duct sealing job runs $1,200 – $2,400 for an average 2,000-3,500 square foot home. Larger homes, complex attic layouts, or systems requiring access panel cuts push toward the higher end. Our Duct Sealing crews work with negative-air HEPA containment so nothing we dislodge enters your living space during the process.
The Pollen and Clay Dust Problem
Cumming sits on the Chattahoochee National Forest foothills, so its pine and hardwood pollen load is heavy enough that local techs see yellow dust coating duct interiors in Windermere and Polo Golf & Country Club even in systems that were sealed at build-out. Because so much of the surrounding acreage is unpaved road and open pasture, that pollen arrives alongside fine red clay road dust rather than the landscaped-lot dust found in Alpharetta or Johns Creek. Sealing without cleaning first traps that debris inside. We clean, then we seal, in that order.
Wood Heat and Outbuilding Systems
A crew ran a duct sealing job on a property off Buford Dam Road near Lake Lanier where the homeowner heats partly with a wood stove; a camera inspection of the return ducts showed drywall dust from a 2010s remodel sitting under a fresh layer of ash and pine pollen, and the older rigid metal trunk had open seams at every takeoff. We worked at negative pressure with HEPA filtration, used agitation tools on the branch runs, then sealed the leaks from the air handler out to the far registers. The owner’s complaint – dust re-settling on furniture within a day or two of cleaning – stopped after the sealing, and the outbuilding shop system got the same treatment on a later trip.
Trusted Brands We Service in Cumming
Our equipment roster includes Rotobrush rotary brush systems for agitation cleaning, Nikro negative-air machines for containment during sealing work, and filtration products from Honeywell, Aprilaire, and Guardsman. We stock common sealing materials and replacement fittings locally, so most Cumming jobs don’t wait on parts. For older lake homes with rigid metal duct, we carry the mastic and metal-backed tape rated for the temperature swings those systems see. When we encounter a Guardman filtration upgrade that makes sense for a Cumming property dealing with heavy pollen loads, we explain the option in plain terms and write the price before any add-on work.
Common Duct Sealing Problems We See in Cumming Homes
- Builder-grade flex duct sealed only at boots, not plenums. The 2000s-2020s subdivisions in Cumming often have flex runs that were sealed where they meet the register boot and the main collar, but not at the plenum connection or the sagging low spots. Pine pollen and clay road dust keep loading the runs through those gaps, and the homeowner can’t figure out why the house still gets dusty after cleaning.
- Condensation in older lake-home metal ducts. Around Lake Lanier, original metal ducts from the 1970s-1990s give off condensation during Cumming’s humid summers. Sealing over damp, biologically active ductwork without cleaning and drying first traps moisture and mold inside. We inspect with a camera and treat any growth before we seal.
- Wood-heat systems collecting ash and fine particulate. Properties that burn wood part of the year pull combustion particulate and ash into return ducts, especially when the stove is the primary heat source for an outbuilding or shop. Those runs get skipped because they’re on a longer service drive, but the accumulated debris offsets the sealing work done on the main house.
- Outbuilding and shop HVAC neglected in maintenance schedules. Detached shops, garage systems, and pool houses on Cumming’s larger rural properties often run on the same outdoor unit or a dedicated mini-split. Their ductwork runs longer, sees less filter attention, and collects the same pollen and clay dust as the main house. Sealing these systems separately prevents cross-contamination and restores airflow to spaces that actually get used.
Pricing for Duct Sealing in Cumming, GA
Whole-house duct sealing in Cumming typically runs $1,200 – $2,400. Partial sealing of a single zone or problem area starts around $450 – $850. What moves the price: the number of registers, attic accessibility, whether we need to cut access panels, and whether the system requires cleaning before sealing. We do not quote per-vent teaser prices that balloon once we’re inside. The price is written down before any work starts, and it does not move at the door. Every job includes a post-sealing pressure test so you can see the improvement in measured airflow. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Cumming
Our crews run regular routes to Cumming from the Atlanta office and pick up jobs in Alpharetta, Canton, Duluth, and Suwanee along the way. If you’re on the edge of the service area or have a property that spans county lines, call and we’ll confirm routing. Same standards apply: written price, background-checked uniformed technician, 365-Day Done Right Promise.
Serving Cumming, GA - Our Local Coverage Area
We’re based in the Cumming 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 Cumming
Every 2 – 3 years for rural Cumming properties with unpaved road access, wood heat, or outbuilding systems. The standard five-year interval assumes suburban conditions with paved roads and no supplemental combustion heat. Red clay dust and pine pollen load ducts faster here. Call (361) 326-5060 and we’ll inspect to confirm your property’s actual interval.
Cleaning removes what’s already inside; sealing stops new pollen and dust from entering. In Cumming’s environment, you need both. We’ve seen systems that were cleaned annually but never sealed, and the yellow dust returned within weeks through gaps at the plenum and sagging flex runs. Call (361) 326-5060 for an estimate on combined cleaning and sealing.
Yes. We seal outbuilding ductwork and mini-split linesets on Cumming properties, though these may schedule on a different day than the main house depending on routing. The same pricing structure applies: written price before work, 365-Day Done Right Promise. Call (361) 326-5060 to discuss your specific setup.
We inspect with a camera, clean if needed, seal all accessible joints with mastic and metal-backed tape, and verify with a pressure test. Our methods align with NADCA guidelines for assessment, cleaning, and restoration of HVAC systems. We use negative-air containment during any cleaning phase, and we document before-and-after conditions with photos. Call (361) 326-5060 for specifics on your system.
Builder-grade installation in the 2000s-2020s boom often sealed only the visible connections at the register boot. The plenum, internal collars, and flex-run low spots were left open. Combined with Cumming’s heavy pollen load and clay dust infiltration, those gaps load the system within the first few years of occupancy. We’ve sealed homes in Windermere and Polo Golf & Country Club that were less than five years old and already showing 15-25% measured leakage. Call (361) 326-5060 for a pressure test.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Cumming since 2004.