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 Atlanta
Duct sealing in Atlanta typically costs $850 – $2,400 for a whole-home seal, depending on whether we’re addressing new-construction flex-duct failures in Johns Creek or aging galvanized runs in Grant Park. Our crews dispatch from our Atlanta office and carry mastic, mesh, and aerosol sealant rated for the 130°F attic temperatures common in north-metro homes during July and August. Call (361) 326-5060 for a written estimate before any work starts.
We’ve sealed ducts in Alpharetta two-story builds, 1920s bungalows off Moreland Avenue, and everything between. Atlanta’s housing stock splits roughly in half: older homes with rigid metal ductwork that has separated at the seams, and newer suburban homes where builder-grade flex duct was taped and left to bake in unconditioned attics. Both fail differently. Both waste money. Our Duct Sealing team knows which failure mode to look for based on your neighborhood and build year.
Why Hollis Air Duct Cleaning Is Atlanta’s Preferred Duct Sealing Company
Hollis has been part of the Garrison Partners family since 2004. That’s a track record that predates most of the duct-cleaning outfits advertising on Atlanta radio. We don’t send subcontractors. Our technicians arrive in uniform, background-checked, with the job spec written down before they touch your system.
The 365-Day Done Right Promise covers every seal we perform. If a joint we sealed fails within a year, we return and make it right at no charge, including a free second visit. The price is written down before work begins. It does not move at the door. No per-vent add-ons, no “we found another problem” upsells once the van is in your driveway.
Phones are answered by a live person 24 hours a day, 7 days a week. No callback queues, no voicemail loops. Dispatch and scheduling are coordinated from our Atlanta office, and crews serve Atlanta locally.
Roy Castellanos leads Hollis Air Duct Cleaning with the expectation that every job follows The Garrison Standard: arrive inside the quoted window, price in writing, complete the work by the book, leave the site clean. That’s not marketing language. It’s how we operate.
Duct Insulation in Atlanta
Duct Insulation in Atlanta is often the missing piece after sealing, because a sealed duct run in a 130°F attic still bleeds temperature if the insulation jacket has compressed or torn. We see this constantly in 1990s – 2000s builder-grade homes in Smyrna and Mableton, where flex duct was installed with minimal R-value wrap that has since sagged or been disturbed by service crews crawling past.
A typical Duct Insulation job in Atlanta runs $400 – $1,200, depending on linear footage and attic accessibility. We use closed-cell foam sleeves and foil-faced fiberglass rated for Georgia’s humidity, not the hardware-store wrap that traps moisture against the duct.
When Insulation Follows Sealing
Sealing fixes the air leak. Insulation fixes the thermal bleed. In Atlanta’s climate, both matter. A sealed supply duct with compromised insulation will still deliver 58°F air that warms to 68°F by the time it reaches a bedroom in Alpharetta. We measure supply temperatures at the register and recommend insulation when the delta exceeds design spec.
Attic Conditions That Accelerate Failure
North-metro Atlanta attics hit sustained 120 – 140°F from June through September. Standard duct insulation degrades faster here than in cooler climates. We inspect for UV damage on any exposed flex, compression from stored items, and gaps where insulation was never properly sealed at boots or plenums.
HVAC Duct Sealing in Atlanta
HVAC Duct Sealing in Atlanta addresses the conditioned air you’re paying to cool that never reaches your living space. In a typical north-metro home with flex duct in the attic, 20 – 30% of cooled air leaks into the insulation before it hits the register. That’s money you spend to make your attic slightly less miserable.
A whole-home HVAC Duct Sealing in Atlanta runs $850 – $2,400. Partial seals for isolated problem zones start around $450. We price by the system, not by the vent. The written quote you receive before work starts is the price you pay.
Aerosol Sealant vs. Manual Mastic
For accessible metal ductwork in older Atlanta homes, we brush mastic and embed fiberglass mesh at every joint and seam. For flex-duct systems with multiple small leaks, aerosol sealant injected under pressure can reach gaps manual methods miss. We choose the method based on duct type and leak location, not convenience.
Static Pressure Verification
After sealing, we measure static pressure at the air handler and compare against manufacturer spec. A sealed system should show measurable improvement. We record the numbers and explain them. If the pressure doesn’t move, we keep looking for the leak.
Trusted Brands We Service in Atlanta
Our Atlanta crews carry sealing and insulation materials from Abatement Technologies and Guardsman, plus rotary brush systems from Rotobrush for source removal when construction debris complicates the seal. We don’t run to the supply house mid-job. Our vans stock mastic, mesh, aerosol sealant, and replacement flex duct in common diameters, so most Atlanta jobs finish in one visit without delay. If your system uses Honeywell or Aprilaire filtration components, we inspect and reseat them as part of the sealing process so the seal doesn’t compromise the filter seal.
Common Duct Sealing Problems We See in Atlanta Homes
- Builder-grade tape failure in hot attics. Cloth-backed duct tape applied to flex-duct joints in Alpharetta and Johns Creek new builds dries and peels within 18 – 24 months of Atlanta’s summer heat exposure. The tape turns brittle, the joint separates, and conditioned air dumps into the attic insulation.
- Construction debris masking as duct failure. Drywall dust, wood scraps, and packaging left in ducts during new-home construction gets pulled into the blower and coil, restricting airflow that homeowners mistake for a leak. Source removal under negative pressure with HEPA filtration fixes the real problem; sealing alone would miss it.
- Pine pollen film trapping moisture. After heavy March/April pollen weeks, Atlanta return ducts accumulate a sticky yellow-green coating. Standard vacuuming won’t remove it. Sealing over this film locks in the organic load and the musty complaints continue. We agitate with rotary brushes and apply antimicrobial treatment before sealing.
- Disconnected flex runs in unconditioned spaces. In 1980s – 2000s suburban homes from Marietta to Smyrna, flex duct routed through attic trusses works loose at boots and plenums. The disconnect is often hidden above the insulation layer and only found with camera inspection.
Pricing for Duct Sealing in Atlanta, GA
Whole-home duct sealing in Atlanta typically runs $850 – $2,400. Partial sealing for identified problem zones starts at $450. Duct insulation added after sealing runs $400 – $1,200. These are honest ranges for the Atlanta market, not teaser prices that balloon once we’re inside.
What moves the number: linear footage of ductwork, attic accessibility (crawl vs. walk-in), whether we find construction debris requiring source removal, and whether flex-duct replacement is needed beyond sealing. We inspect with a camera before quoting. The price is written down. It does not change.
Every estimate is free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Atlanta
Our Duct Sealing in Atlanta crews regularly work in Smyrna, Mableton, Marietta, and Austell. Same pricing structure, same written guarantee, same live-answer dispatch. If you’re in the north-metro corridor and seeing dust streaks on registers or uneven cooling between rooms, the same failure modes we see in Atlanta proper apply.
Serving Atlanta, GA - Our Local Coverage Area
We’re based in the Atlanta 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 Atlanta
Builder-grade flex-duct joints in Atlanta’s new northern-crescent homes are typically sealed with cloth-backed tape or basic mastic that fails within the first two cooling seasons in 130°F attic heat. The tape dries, peels, and leaks conditioned air into the insulation while pulling attic dust and pollen into your supply. We recommend inspection at the 18-month mark, well before most builders’ warranty timelines suggest. Call (361) 326-5060 for a camera inspection and written quote.
Yes, in most cases we seal existing flex duct by accessing boots, plenums, and joints from the attic, applying mastic and mesh or aerosol sealant without removing the full runs. If the flex itself is crushed, torn, or degraded by UV exposure, we flag it for replacement. We inspect with a camera first so you know exactly what’s needed before any work starts. Call (361) 326-5060 to schedule.
Atlanta’s March/April pine pollen coats return ducts with a sticky yellow-green film that standard vacuuming won’t remove. Sealing over this film traps the organic load, so musty smells and IAQ complaints continue after the seal. We agitate with rotary brushes and apply antimicrobial treatment before sealing, which adds time but prevents callbacks. The 365-Day Done Right Promise covers our work either way. Call (361) 326-5060 to discuss timing around pollen season.
Yes, our source removal and sealing procedures align with NADCA ACR guidelines for HVAC system cleaning and restoration. We use negative-air machines with HEPA filtration, contain the work area, and verify seal integrity with static pressure measurement. The Garrison Standard requires completing the job by the book, not cutting corners to hit a time estimate. Call (361) 326-5060 for specifics on our process.
A builder should have performed source removal after construction to clear drywall dust and framing debris, sealed all joints with mastic and mesh rather than cloth-backed tape, and verified static pressure before final walkthrough. In practice, most north-metro Atlanta builders do none of these. The debris gets left behind, the tape fails in the first hot summer, and the homeowner inherits the problem at the two-year mark. We document what we find with camera footage and explain what’s fixable. Call (361) 326-5060 for a post-construction inspection.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Atlanta since 2004.