Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-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 Duct Sealing Across Suwanee
Duct sealing in Suwanee typically runs $850 to $2,400 for a full system, depending on how much of your ductwork sits in the attic and how many leaks we find. Most jobs take one to two days, and we don’t rush the work because mastic and tape need time to cure properly. If you live off Peachtree Industrial Boulevard or in a subdivision near Suwanee Town Center, you’ve likely noticed dust returning faster than it should after cleaning. That’s almost always a duct leak pulling attic air into your living space, and it’s exactly what our Duct Sealing crew fixes every week across Suwanee. Call (762) 769-7145 and we’ll schedule a camera inspection first, so you know what you’re dealing with before anyone touches a tool.
Why Hollis Air Duct Alpharetta Is Suwanee’s Preferred Duct Sealing Company
We answer our phones with a live person, every time. That matters when you’re calling at 7 a.m. about dust coating your kitchen counters again. Suwanee homeowners tell us the same thing: they’ve been burned by crews who quoted one price over the phone and wrote a different number on the invoice. Our price is written before work starts, and it does not move at the door.
Roy Castellanos leads our team, and he holds every job to The Garrison Code: arrive inside the window we quoted, keep the work area clean, and don’t leave until the negative-pressure test confirms the ducts are sealed tight. Every job is covered by our 365-Day Done Right Promise. If a seal fails within a year, we come back and fix it at no charge. That’s in writing, on every job we do in Suwanee.
Crews serving Suwanee are background-checked and uniformed. You’ll know who’s walking into your home before they arrive. We dispatch from our metro Atlanta office, but the technicians who show up at your door work Suwanee neighborhoods weekly, from Riverbrooke to Barrington to the cul-de-sacs off Moore Road.
Styles & brands we work with
HVAC Duct Sealing in Suwanee
HVAC Duct Sealing in Suwanee means finding and closing every gap, crack, and disconnected joint in your ductwork so the air you pay to heat and cool actually reaches your rooms instead of your attic. In homes built since the 1990s, which covers most of Suwanee’s housing stock, the ductwork is almost always flexible ducting run through attics. Over years of Georgia heat, that flex duct sags, kinks, and pulls away from takeoffs. The leaks are rarely visible unless you get a camera up there, which is why we start every job with one.
Return-Side Leaks and Attic Air
The return side of your system pulls air back to the air handler. When return ducts leak, they pull unconditioned attic air into the system: hot, humid air in summer, cold air in winter, and pollen dust almost year-round. This makes your blower work harder, shortens its life, and recirculates allergens through your living space no matter how many times you clean the registers.
Supply-Side Sealing in Ventilated Attics
Supply ducts push conditioned air to your rooms. Leaks here mean you’re paying to cool or heat your attic. Suwanee’s humid subtropical summers push attic temperatures well past 120 degrees, so a supply leak is a direct energy loss. We seal supply-side joints with UL 181 mastic and aluminum tape, then verify with a negative-pressure test before we pack up.
Duct Repair in Suwanee
Duct Repair in Suwanee means fixing the physical problems that prevent sealing from working: sagging flex duct, crushed runs, disconnected takeoffs, and unsealed boots. You can’t seal a duct that’s kinked like a garden hose. We repair the structure first, then seal the joints. In many Suwanee attics, the repair and the seal are the same job: re-supporting a 12-inch return flex duct that’s collapsed under its own weight is often the single biggest improvement we make.
Re-Supporting Sagging Attic Flex Ducts
Flex duct needs to be supported every four to five feet. When support straps break or were never installed correctly, the duct dips and creates low spots where dust and moisture collect. We replace broken straps, add supports where the builder skimped, and ensure the duct has a smooth run from the plenum to the register.
Sealing Duct Boots to Drywall
Duct boots are the metal boxes behind your registers. Builders frequently leave the gap between the boot and the drywall unsealed, which lets attic dust and insulation bypass the filter entirely and blow straight into your rooms. This is a major source of the ‘new house dust’ that Suwanee homeowners in post-2000 subdivisions complain about. We seal boots with mastic and foam backing where accessible, and we document every repair with before-and-after photos.
Trusted Brands We Service in Suwanee
The equipment we use matters, and we don’t hide what’s in the van. Our crews run Rotobrush rotary brush systems for cleaning and Nikro negative-air machines to capture debris before it enters your home. For filtration jobs tied to duct sealing, we stock and install Honeywell and Aprilaire media filters. We keep common parts on the truck: mastic, UL 181 tape, support straps, and flex duct sections in standard diameters. That means fewer trips back to the supply house and a faster job for Suwanee homeowners.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in Suwanee Homes
- Sagging attic flex ducts pulling away from takeoffs. Builders hang ductwork quickly, and Georgia attic heat weakens plastic support straps over time. The duct drops, the connection at the plenum or takeoff opens up, and your system starts pulling attic air. We see this in nearly every pre-2015 Suwanee home we inspect.
- Unsealed duct boots letting pollen bypass the filter. Suwanee’s tree canopy is dense, which means a long pollen season from March through October. When boots aren’t sealed to the drywall, that pollen finds its way into your living room instead of getting caught by the filter. Sealing boots stops the bypass.
- Kinked return ducts starving the blower. A kinked 12-inch or 14-inch return flex duct reduces airflow dramatically. The blower motor runs hotter and longer to compensate, which shortens its life. In Suwanee’s cooling season, which can stretch from May into October, this is a repair that pays for itself.
- Construction dust from active subdivisions settling in ductwork. New construction in areas like Sugar Hill and along Lawrenceville-Suwanee Road throws fine gypsum and sawdust into the air. If your return side is leaking, that dust gets pulled into your ductwork and blown through the house for months after the framing crews leave.
Pricing for Duct Sealing in Suwanee, GA
A full duct sealing job in Suwanee typically runs $850 to $2,400, depending on attic accessibility, how many boots need sealing, and whether we’re repairing sagging duct runs at the same time. Partial jobs, like sealing the boots in a single-story rancher near Suwanee Creek Park, often land around $450 to $900. That’s a written price before we start, not an estimate that changes once we’re in the attic. We don’t price per vent. You get one flat price per system, and what we quote is what you pay. Call (762) 769-7145 for a free estimate and camera inspection, so the quote reflects what we actually find, not what the last company guessed over the phone.
We Also Serve Cities Near Suwanee
Our crews cover Suwanee and the surrounding area regularly. If you’re in Norcross, Duluth, Alpharetta, or Cumming, we’ll schedule the same camera-first inspection and written pricing we offer in Suwanee. Call the same number and ask for a local dispatch: (762) 769-7145.
Serving Suwanee, GA - Our Local Coverage Area
We’re based in the Suwanee 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 Suwanee
If you run a clean, correctly sized filter and dust still reappears within a week of cleaning, the dust isn’t coming through the filter, it’s bypassing it or being pulled in through return-side leaks. We verify with a camera inspection of the return run. In most Suwanee attics, the leak is visible once you look for it: a takeoff separated from the plenum or a boot with a visible gap to the drywall. Call (762) 769-7145 and we’ll show you the photos before we quote anything.
In Suwanee’s newer subdivisions, this usually traces to one of two things: unsealed duct boots letting attic dust bypass the filter, or a return-side leak pulling in dusty attic air. Cleaning removes the dust already in the ducts. Sealing stops new dust from entering. If cleaning alone was the answer, you wouldn’t be seeing the problem return this fast. Get both done in the same visit and verify with before-and-after photos.
Yes. We lay drop cloths from the attic access to the work area, wear shoe covers inside, and run a HEPA-filtered negative-air machine when the job involves cleaning alongside sealing. The attic itself is hot regardless of who’s in it, but we work in directed shifts and schedule attic work in the morning during summer months to keep the job safe and efficient.
Yes, in most cases. Two-story homes in Suwanee often have long, undersized flex duct runs to upstairs bedrooms. When supply ducts leak along the way, the air meant for those rooms disappears into the attic. Sealing those runs and re-supporting any sagging sections restores the pressure, which translates directly to better airflow upstairs. We’ve seen temperature differences between floors shrink from 10 degrees to 3 degrees after proper sealing.
Most 4-bedroom homes in Suwanee take one to two full days. Mastic needs several hours to cure before we test the system, so we schedule realistically and won’t rush the job. You can run the AC as soon as we’re done and the negative-pressure test passes, typically late on day two. If we find significant repairs, like re-running a crushed return duct, we’ll tell you before we start and give you an adjusted timeline in writing.
Ready to stop chasing dust? Call (762) 769-7145 for a free estimate and camera inspection. We serve Suwanee and nearby cities with written pricing, background-checked techs, and a 365-Day Done Right Promise on every job.
Written by Roy Castellanos, Owner at Hollis Air Duct Alpharetta, serving Suwanee since 2004.