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.
Before
After
Before
After
Before
AfterFast, Reliable Duct Sealing Across Acworth
We’re the crew that shows up when we said we would, price in writing before we touch anything, and leave your attic cleaner than we found it. If your Acworth home has rooms that never reach temperature, a system that runs all day, or energy bills that climbed without explanation, the problem is often in the ductwork, not the HVAC unit itself. For related maintenance, see our Acworth Dryer Vent Cleaning service. Call us at (361) 326-5060 for a free estimate. Dispatch and scheduling are coordinated from our Atlanta office, but our technicians live and work in the Acworth area, so we know the subdivisions off Baker Road, the lake cottages near Dallas Landing, and the older mill-era homes downtown where ductwork problems follow predictable patterns.
Why Hollis Air Duct Cleaning Is Acworth’s Preferred Duct Sealing Company
We’ve been doing this since 2004 as part of the Garrison Partners family, and our 365-Day Done Right Promise means if the seal fails, we come back and make it right at no charge, including a free second visit. That promise is backed in writing on every job, not something we mention once and forget.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. They carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, the same tools commercial crews use on larger buildings, and they follow The Garrison Code on every Acworth job: arrive inside the quoted window, price in writing, complete the work by the book, leave the site clean.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday for someone to return your call.
Air Duct Sealing in Acworth
Air Duct Sealing in Acworth is the process of closing gaps, leaks, and disconnected joints in your home’s duct system so the air your HVAC produces actually reaches the rooms it’s supposed to heat or cool. In Acworth’s housing stock, the real problem is rarely a single dramatic tear. It’s twenty years of flexible duct runs sagging off hangers in brutally hot attics, collar connections working loose, and trunk-line joints that were never properly sealed at install dumping conditioned air into the attic instead of your bedroom.
A typical whole-system Air Duct Sealing job in Acworth runs $1,200 – $2,800 depending on the size of the home, accessibility of the duct runs, and whether we find disconnected sections that need reconnection before sealing can begin. We give you a written price before any work starts, and that price does not move at the door.
What We Seal and Why It Fails
We seal collars at the plenum and air handler, trunk-line junctions, boot connections at the floor or ceiling, and penetrations through slab or crawlspace areas. In Acworth’s dominant 1990s – 2000s subdivisions, flex duct runs can be 40 feet or longer through the attic. When the jacket soaks up humidity and sags, the inner liner kinks or tears. Sealing restores pressure integrity, but we also flag where the duct itself needs support or replacement.
How We Test Before and After
We pressure-test the system to measure leakage in CFM before we start, then test again after sealing. You see the numbers. In a two-story home near Cobb Parkway, we commonly find 25 – 35% airflow loss through leaks before sealing, and we target under 10% after.
Duct Sealing Services in Acworth
Duct Sealing Services in Acworth cover the full range of pressure-sealing work, from spot repairs on isolated leaks to whole-system sealing with mastic and reinforced tape on every joint and penetration. Our Duct Sealing team handles both the diagnostic work and the physical repair, because finding the leak is only half the job. We serve Acworth homeowners who are tired of throwing money at their HVAC contractor for a bigger unit when the real problem is that half the conditioned air never reaches the living space.
Spot sealing for a single disconnected run or collar repair in Acworth typically runs $350 – $650. Whole-system sealing for a 2,500-square-foot home with attic and crawlspace access averages $1,800 – $2,400. Homes near Lake Acworth or Lake Allatoona with moisture-damaged flex ducts may need additional work before sealing is effective.
Mastic Sealing vs. Tape-Only Repairs
We use duct-sealing mastic, a thick water-based compound that brushes onto joints and cures to a flexible, permanent seal. Tape alone dries and fails in Georgia attic heat. Mastic lasts. On metal trunk lines, we use reinforced mastic tape as a secondary measure, never as the primary seal.
When Sealing Needs Backup Work
Sealing a duct that has collapsed from water damage or mildew contamination is putting a bandage on a broken arm. We tell you straight when the flex duct needs replacement before sealing makes sense. Our written price separates the two scopes so you decide with full information.
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 Acworth
We stock parts and sealing materials from Aprilaire, Abatement Technologies, and Guardsman, brands that supply commercial and residential HVAC contractors throughout north Georgia. For Acworth customers, this means we don’t need to order parts and make you wait. Our vans carry mastic, collars, flex duct in common diameters, and the connection hardware to complete most jobs the same visit. If your system uses Honeywell or Aprilaire filtration components, we can assess whether those seals are contributing to pressure loss while we’re in the attic. The right parts on the van save you a second trip and a second day of disrupted schedule.
Common Duct Sealing Problems We See in Acworth Homes
- Sagging flex runs in 1990s – 2000s attic construction. Acworth subdivisions like those off Mars Hill Road and Baker Road are full of homes with long flex-duct runs through unconditioned attics. The jacket absorbs humidity, the insulation compresses, and the duct droops off its hangers. At elbows and transitions, the inner liner kinks or collapses entirely, choking airflow to the far bedrooms. We re-support the run, then seal.
- Lake-area humidity damage near Lake Acworth and Lake Allatoona. In lake-adjacent neighborhoods, attic humidity stays elevated even when the HVAC is off. Flex ducts arrive at the diffuser with water staining and mildew on the jacket. Sealing alone won’t fix this until the moisture source is addressed, but sealing is still necessary after we replace the damaged section.
- Disconnected boot connections in crawlspace and slab homes. Many Acworth homes on slab or crawlspace have boots that have pulled away from the subfloor penetration, dumping conditioned air into the crawlspace or attic. We find these during camera inspection, reconnect with mechanical fasteners, then seal with mastic.
- Unsealed trunk-line joints from original construction. In older Acworth homes, including downtown mill-era housing and lake cottages, trunk lines were often assembled without sealing the longitudinal seams or junctions. Conditioned air leaks out before it ever reaches the branch ducts. We seal every joint we can access.
Pricing for Duct Sealing in Acworth, GA
Honest pricing means numbers on the page, not a teaser that doubles once the van is in your driveway. In the Acworth market, duct sealing costs break down as follows:
- Spot seal / single leak repair: $350 – $650
- Partial system sealing (attic or crawlspace only): $800 – $1,400
- Whole-system sealing, typical 2,000 – 2,500 sq ft home: $1,200 – $2,200
- Whole-system sealing with multiple disconnected runs or moisture damage: $1,800 – $2,800
- Duct replacement plus sealing, lake-area homes with mildew damage: $2,500 – $4,200
What moves the price: accessibility of the duct runs, whether we need to remove insulation to access joints, the condition of existing flex duct, and whether we find disconnected sections that need reconnection before sealing. We inspect first, give you a written price, and you approve it before we start. No per-vent pricing, no add-ons at the door. Call (361) 326-5060 for a free estimate.
We Also Serve Cities Near Acworth
Our crews work throughout north metro Atlanta, including Duct Sealing in Acworth and surrounding communities. We regularly schedule jobs in Kennesaw, Woodstock, Marietta, and Holly Springs from the same dispatch operation, so if you live near the city line or have a rental property in one of these areas, we can coordinate the appointment on the same call.
Serving Acworth, GA - Our Local Coverage Area
We’re based in the Acworth 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 Acworth
The lake microclimate keeps attic humidity high even when your HVAC is off, so flex duct jackets absorb moisture over time, sag, and develop mildew on the interior surface. Sealing alone won’t solve this until we replace the moisture-damaged duct and address ventilation or insulation gaps that let humid air into the attic. Call (361) 326-5060 and we’ll inspect to tell you which problem you actually have.
Very likely yes. In Acworth’s 1990s – 2000s builds, the longest flex-duct runs feed the farthest bedrooms, and those runs are the first to sag, kink, or disconnect at the collar. We camera-inspect the run, pressure-test the system, and typically find 20 – 30% airflow loss to that room. Sealing and re-supporting the duct usually restores comfort the same day. Call (361) 326-5060 for a free estimate.
Yes. Our cleaning and sealing protocols align with NADCA guidelines for source removal, mechanical agitation, and post-clean verification. We use Rotobrush rotary brush systems and Nikro negative-air machines to loosen and extract debris before we seal, so we’re not trapping contaminants behind a new seal. The 365-Day Done Right Promise covers our sealing work for a full year.
Sealing the return duct prevents pollen and attic air from being drawn into the system through leaks, but it does not remove pollen already inside. We typically recommend duct cleaning with agitation and negative-air extraction before sealing, so the system starts clean and stays clean. In Acworth’s heavy spring pollen season, this combination makes a noticeable difference in what you’re breathing. Call (361) 326-5060 to schedule both.
We evaluate it on site. Original flex duct from the 1980s or earlier often has degraded jacket insulation and brittle inner liners that tear during inspection. If the duct is structurally sound, we seal it. If it’s crumbling or contaminated with mildew, we replace it with new flex duct and seal the new connections. We give you a written price for both scenarios before you decide.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Acworth and north metro Atlanta since 2004.