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 Duluth
Duct sealing in Duluth, GA typically costs between $850 and $2,400 for a full system, depending on home size and how many leaks we find during the camera inspection. We don’t quote per vent or pad the invoice with add-ons once the van’s in your driveway. You get one written price for the whole system before we start, and it does not move. Call (762) 769-7145 and we’ll walk you through what your specific Duluth home needs.
Our crews know Duluth’s streets, its subdivisions, and the particular way its 1990s and 2000s homes were built. That matters because duct sealing here isn’t the same job as it is in older Atlanta neighborhoods. We’ll explain why as we go, but the short version is this: Duluth homes trap humidity and construction debris in ways that make sealing a mold-prevention job, not just an energy-efficiency one.
Why Hollis Air Duct Alpharetta Is Duluth’s Preferred Duct Sealing Company
Hollis Air Duct Alpharetta is part of the Garrison Partners family, independently owned and operated under The Garrison Standard. That standard is simple and it’s written down: arrive inside the quoted window, price the job in writing before touching anything, complete the work by the book, and leave the site clean. Duluth homeowners call us because they’ve been burned by outfits that don’t do any of those four things.
Roy Castellanos leads our team, and the expectations he sets are specific. Technicians are background-checked and uniformed, so you know who’s walking through your door before they arrive. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops, no waiting until Monday for a callback. When you call about duct sealing in Duluth, a real person picks up.
Every Duluth job is covered by the 365-Day Done Right Promise. If a sealed joint fails or a repair doesn’t hold within a year, we come back and make it right at no charge. That includes a free second visit. It’s not negotiated, it’s not conditional, and it’s in writing before we start.
Styles & brands we work with
HVAC Duct Sealing in Duluth
HVAC Duct Sealing in Duluth means closing the gaps, holes, and failed tape joints in your ductwork so the air you pay to heat and cool actually reaches the rooms you live in, instead of leaking into your attic or crawlspace. In Duluth’s tightly built post-1990s homes, the stakes are higher than wasted energy. Leaky return ducts pull humid attic air into your system, and that moisture feeds mold in the air handler and throughout the rest of the duct run.
Camera Inspection Before Any Sealant
We never seal ducts without first looking at them. A camera inspection before sealing frequently uncovers airflow-robbing defects that generic duct cleaners miss – kinked flex runs, disconnected joints, drywall dust still sitting in the supply branches from original construction. Sealing over those problems would lock in the contamination. So we find them first, fix the geometry, then seal.
Mastic and Mechanical Fastening
We seal with mastic, the same material commercial HVAC crews use, not foil tape that dries out and peels. Mastic goes on flexible and cures to a hard, durable seal that moves with the duct as it expands and contracts through Duluth’s hot summers and damp winters. Where flex duct has pulled off a collar entirely, we reconnect it mechanically before sealing the joint.
For a typical Duluth home in the 2,500 to 3,500 square foot range with two HVAC zones, HVAC duct sealing runs $850 to $1,800. Larger homes with more complex duct layouts or significant disconnects can run $1,800 to $2,400. You’ll know your exact number before we start.
Duct Repair in Duluth
Duct Repair in Duluth goes hand in hand with sealing, because the problems we find here are usually structural, not just cosmetic. Flexible ductwork from the 1990s and 2000s building boom is common throughout Duluth, and original installers often left runs kinked, crushed, or disconnected altogether. Repair means restoring that duct to its proper shape and connection before any sealant goes on.
Reconnecting Disconnected Flex Runs
A disconnected flex duct in a Duluth attic means one or more rooms are getting almost no conditioned air. The air handler runs harder, static pressure builds, and the system pushes conditioned air out through every loose seam it can find. We reconnect the run at the plenum or branch collar, seal it with mastic, and verify the airflow at the supply register before we call the job done.
Correcting Kinked and Crushed Ducts
Kinked flex duct starves rooms of airflow and raises static pressure throughout the whole system. In Duluth homes, we regularly find flex runs that were installed with too-tight bends or crushed by attic storage. Repair means re-routing or replacing the damaged section so air can move the way the system was designed to move. Then we seal the corrected run and test the pressure.
Duct repair in Duluth typically runs $250 to $600 per affected run, depending on the length and accessibility in your attic. Most Duluth homes we service need between one and four runs addressed. Free estimate before any work starts, always in writing.
Trusted Brands We Service in Duluth
Duluth homes come with a range of HVAC equipment, and we service all of it. That includes filtration systems from Honeywell and Aprilaire, plus air cleaners from Abatement Technologies and Guardsman. We don’t push one brand over another; we work with what’s already in your home and make sure it’s filtering the air your sealed ducts are delivering. Our crews carry common Duluth-market parts so repairs don’t stall waiting on a supply house run. If your system needs a specific filter or component, we’ll tell you the brand, the part number, and the price before we order it.
Common Duct Sealing Problems We See in Duluth Homes
- Builder-grade tape failing on flex duct joints. Homes built during Duluth’s 1990s and 2000s expansion boom often have joints taped by the original installer. That tape dries out and peels within a decade, leaving gaps that pull humid attic air into the return side. We replace it with mastic, which doesn’t fail the same way.
- Disconnected return ducts feeding mold growth. A disconnected flex run on the return side will pull air from wherever the gap is, usually a hot, humid Duluth attic. That moisture lands inside the air handler and feeds mold. The fix starts with reconnecting the run and sealing the joint.
- Kinked flex runs choking supply airflow. Poor original installation leaves tight bends and crushed sections that restrict airflow to far rooms. The system compensates by pushing harder, which forces conditioned air out through every loose seam. We correct the geometry before sealing.
- Construction debris still circulating decades later. In neighborhoods off Peachtree Industrial Boulevard, we’ve found drywall dust and paint overspray inside ducts from the day the house was built. Sealing without removing that first only locks in the contaminants. We clean before we seal.
See the difference
Before
After
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After
Before
AfterPricing for Duct Sealing in Duluth, GA
Duct sealing in Duluth’s market runs $850 to $2,400 per system as a flat price. That’s the whole job, not a starting point. Smaller townhomes with a single zone and accessible ductwork land at the lower end. Large two-story homes with multiple zones, attic runs, and significant disconnects land higher. What affects the number is the size of the system and how much repair work the camera inspection turns up. You’ll get a written price before any work starts, and that exact number is what you pay. Call (762) 769-7145 for a free estimate.
We Also Serve Cities Near Duluth
Our crews handle Duct Sealing throughout the metro area. Beyond Duluth, we regularly serve Suwanee, Norcross, Alpharetta, and Roswell. If you’re just outside the city limits, call and we’ll confirm coverage. You can also see more about our local work on the Duluth page.
Serving Duluth, GA - Our Local Coverage Area
We’re based in the Duluth 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 Duluth
A camera inspection is non-negotiable in Duluth because the flexible ductwork installed during the 1990s and 2000s building boom often hides problems you can’t see from the register. Kinks, disconnects, and construction debris are common, and sealing over them would trap the problem. We inspect first, show you what we found, and only then seal. Call (762) 769-7145 and we’ll schedule your inspection.
A typical 3,000-square-foot Duluth home with two HVAC zones runs $1,200 to $2,000 for full duct sealing, including repair of disconnected or kinked flex runs found during the inspection. Larger homes with more extensive damage can run up to $2,400. You get a written price before we start, and it doesn’t change at the door. Call for a free estimate.
Duct sealing can stop the source of mold smell in many Duluth homes, if that source is humid attic air being pulled through leaky return ducts into the air handler. Sealing the leaks cuts off the moisture supply. But sealing won’t remove mold that’s already growing; that requires cleaning first, then sealing to prevent recurrence. We’ll tell you which one your system needs after the inspection.
Homes around Peachtree Industrial Boulevard were built fast during the suburban expansion, and many have flexible ductwork that was installed with tight bends, loose connections, and builder-grade tape. Older Atlanta houses typically have rigid metal ducts with soldered or mechanical joints that hold up better over time. Duluth’s flex-duct homes simply have more failure points per square foot, and our camera inspections confirm it on nearly every job.
Yes. Sealed ductwork means conditioned air reaches your rooms instead of leaking into the attic, so your system doesn’t run as long to hit the same thermostat setting. In a Duluth summer with the air conditioning running nearly continuously, that’s real money. Most homeowners notice the difference within the first full billing cycle. Call (762) 769-7145 for a written estimate and we’ll walk you through what your system actually needs.
Call Hollis Air Duct Alpharetta for Duct Sealing in Duluth
If your Duluth home has rooms that never quite cool down, a musty smell from the vents, or utility bills that climb every summer, the ductwork is the first place we’d look. We’ll inspect it with a camera, show you exactly what’s wrong, and price the repair and sealing in writing before any work starts. One flat price per system, a real person on the phone, and a 365-Day Done Right Promise behind every job. Call (762) 769-7145 today.
Written by Roy Castellanos, Owner at Hollis Air Duct Alpharetta, serving Duluth, GA.