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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After
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AfterFast, Reliable Duct Sealing Across Duluth
Duct sealing in Duluth, GA typically costs $350 – $850 for a whole-home seal depending on system size and accessibility, and most jobs are completed in a single visit with the price written before any work starts. If you’re noticing rooms that won’t cool evenly, dust puffing from registers, or utility bills climbing through Duluth’s humid summers, leaking ductwork is likely the culprit. Call (361) 326-5060 for a free estimate – we’ll inspect your system, show you exactly where the air is escaping, and give you a written price that doesn’t move at the door.
We’ve been serving Duluth homeowners since 2004 as part of the Garrison Partners family, and our crews know this city’s housing inside and out. From the postwar bungalows off Main Street near the railroad tracks to the newer subdivisions along Peachtree Industrial, we’ve sealed ductwork in just about every configuration Duluth throws at us. Our Atlanta office coordinates dispatch and scheduling, so we can typically get to Duluth properties inside our quoted window without the runaround you get from outfits based two counties away.
Why Hollis Air Duct Cleaning Is Duluth’s Preferred Duct Sealing Company
Our reputation in Duluth was built one job at a time, mostly through neighbors telling neighbors. We show up in uniform, background-checked, with the same Rotobrush and Nikro equipment we use on commercial jobs. The Garrison Standard means we arrive inside the window, price in writing, complete the job by the book, and leave the site clean – no exceptions.
Duluth customers specifically mention our upfront pricing in reviews. The price we write down before touching your system is the price you pay. No per-vent add-ons, no “discovered problems” once the van is in your driveway. That matters in a market where teaser coupons are common and final invoices rarely match the quote.
Response time to Duluth is coordinated through our Atlanta office, with live phone answering 24 hours a day, 7 days a week. No voicemail loops, no callback queues, no waiting until Monday to schedule. When you call (361) 326-5060, a real person picks up and can book your appointment directly.
We understand Duluth’s local conditions because we’ve worked here for two decades. We know the 130°F attic temperatures in subdivisions like Riverbrooke, the red clay dust that filters through crawlspace returns, and the way Georgia’s humidity degrades old duct tape on galvanized systems. That local knowledge means we diagnose faster and fix it right the first time.
Duct Sealing Services in Duluth
Duct Sealing Services in Duluth address a problem most homeowners don’t know they have: conditioned air leaking into attics, crawlspaces, and wall cavities before it ever reaches your rooms. In Duluth’s climate, where AC runs eight months a year and pollen season turns registers gray, every cubic foot of lost air is money you’re paying to cool your attic. A typical whole-home duct sealing in Duluth runs $350 – $850, with simpler partial seals starting around $250 for accessible systems with obvious leak points.
Our process starts with a pressure test to quantify exactly how much air you’re losing. We then seal accessible joints, connections, and penetrations using mastic sealant and mechanical fasteners – not duct tape, which fails under Georgia’s humidity swings. For flex duct systems common in Duluth’s 1990s – 2010s subdivisions, we address crushed runs and poorly tied collars that the original installers left behind. Every seal is verified with a post-test so you see the improvement in hard numbers.
Construction Debris Removal and Post-Build Sealing
New Duluth homes often carry more construction dust and drywall debris in their ducts than ten-year-old homes that have been properly cleaned. We were called to Riverbrooke after a family closed on a two-story home and noticed drywall dust puffing from the registers every time the air handler kicked on; our tech ran a camera inspection and found the builder-grade flex duct littered with construction debris, drywall chunks, and dust from the original install. We ran agitation tools through the supply and return ducts under negative pressure with HEPA filtration, then sealed the crushed and leaking flex joints that the original crew never bothered to tie off. The homeowner said the difference in air quality was immediate – no more dust clouds, and the house finally felt like it was truly theirs.
Flex Duct Repair and Collar Replacement
Duluth’s newer subdivisions were built with flex duct runs in unconditioned attics, and that flex crushes, tears, and pulls apart at the collars under constant thermal cycling. We replace damaged flex sections and install proper mechanical connections with mastic, so your system delivers full airflow to every room instead of dumping it into a 130°F attic.
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.
Duct Insulation in Duluth
Duct Insulation in Duluth is the companion service to sealing – because a sealed duct in an unconditioned attic still bleeds temperature through its walls. In Duluth’s climate, where attic temperatures regularly hit 130°F in July and dew points stay in the 70s for weeks, uninsulated or poorly insulated ductwork forces your HVAC system to re-cool air that heated up in the ten feet between your air handler and your bedroom ceiling. Typical duct insulation in Duluth runs $400 – $1,200 depending on linear footage and whether we’re wrapping existing ducts or replacing degraded insulation that’s fallen away.
We use professional-grade insulation products from Honeywell and Aprilaire, installed to current energy code standards. The work is particularly important for Duluth homes with flex duct in vented attics, where the thin factory insulation degrades over time and fiberglass liner collapses under condensation load. Proper insulation after sealing can reduce thermal loss by 30% or more, which you’ll see in lower runtime and more consistent room temperatures.
Vapor Barrier and Condensation Control
Georgia’s humidity means condensation inside ductwork is a constant threat. We install insulation with intact vapor barriers and seal all seams with appropriate tape and mastic, preventing moisture from reaching the duct surface where it breeds mold and degrades the insulation itself. This matters especially in Duluth’s newer homes, where near-constant AC use keeps ducts cold and vulnerable to attic humidity.
Attic Duct Encapsulation
For systems with extensive flex duct runs in vented attics, we offer full encapsulation: sealing every joint, then wrapping the entire trunk-and-branch system in a continuous insulation blanket. It’s the most effective solution for Duluth’s high-heat, high-humidity attic conditions, and it typically pays for itself in reduced energy bills within two to three cooling seasons.
Trusted Brands We Service in Duluth
We stock parts and materials from Nikro, Honeywell, Aprilaire, and Abatement Technologies for Duluth jobs, which means faster turnaround and no waiting on shipped components. Our Nikro negative-air machines and Rotobrush rotary systems are the same tools commercial crews use, and our filtration products from Honeywell and Aprilaire meet the specifications we encounter in Duluth’s higher-end subdivisions. When we seal your ductwork, we’re not improvising with hardware-store tape – we’re using products rated for the temperature swings and humidity your attic sees every summer.
Common Duct Sealing Problems We See in Duluth Homes
- Crushed flex duct from builder installs in 130°F attics. In subdivisions like Riverbrooke and Chattahoochee Reserve, the original crews often compressed flex runs between trusses or left them kinked around obstructions. These crushed sections create turbulence and pressure drops that pull apart nearby joints, dumping conditioned air straight into the attic.
- Drywall dust and construction debris left in new-home ducts at handover. Duluth’s 1990s – 2010s subdivision homes were built fast with builder-grade flex duct, and builders rarely perform NADCA-standard source removal before closing. That debris migrates through the system for months, masking leaks with filter-clogging dust loads and making the blower motor work harder than it should.
- Brittle duct tape on galvanized runs in older downtown Duluth bungalows. Near the railroad tracks off Main Street, joints wrapped decades ago with cloth-backed duct tape have dried out and lost adhesion under Georgia’s humidity swings. The tape turns to powder, and the gaps underneath leak continuously whenever the system runs.
- Fiberglass liner collapsing under condensation load. In unconditioned attics during Duluth’s humid subtropical summers, degraded flex duct insulation saturates with moisture and collapses onto the inner liner. The duct constricts, airflow drops, and the pulled-apart collar creates a direct pathway for attic air, pollen, and red clay dust into your return stream.
Pricing for Duct Sealing in Duluth, GA
Most whole-home duct sealing jobs in Duluth fall between $350 and $850. Partial seals targeting specific problem areas – a crushed flex run in the attic, a failing collar connection, or a section of degraded tape on older galvanized duct – typically start around $250. Duct insulation adds $400 – $1,200 depending on how much linear footage we’re wrapping and whether we’re working in an accessible attic or a tight crawlspace.
What moves the price: system size (more ducts, more joints to seal), attic accessibility, and the condition of existing materials. Flex duct that’s crushed or torn requires replacement before sealing, which adds material cost. Older galvanized systems may need corrosion assessment. We always inspect first and write the full price before any work starts – no estimates that balloon once we’re inside.
Call (361) 326-5060 for a free estimate. We’ll pressure-test your system, show you the leak locations on camera, and give you a written price you can take to another company for comparison. We don’t match teaser coupons, but we also don’t change the number at the door.
We Also Serve Cities Near Duluth
Our crews work throughout Gwinnett and surrounding counties, including Duct Sealing in Duluth and nearby Suwanee, Lawrenceville, Buford, and Norcross. Dispatch is coordinated from our Atlanta office, so we can schedule across this corridor efficiently without the delays that come from contractors based outside the metro area. If you’re in one of these neighboring cities and found this page, the same pricing structure and 365-Day Done Right Promise apply – call (361) 326-5060 and we’ll route you to the next available crew.
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
Because Duluth’s 1990s – 2010s subdivision homes were built fast with builder-grade flex duct, and the original crews often left crushed runs, untied collars, and construction debris inside the system. That drywall dust and debris migrates through your registers for months, and the leaks dump conditioned air into your attic from day one. Call (361) 326-5060 for a camera inspection – we’ll show you exactly what the builder left behind.
Yes, flex duct can be sealed effectively when the material itself is intact. We replace crushed or torn sections, retie loose collars with mechanical fasteners and mastic, and seal all accessible joints. The problem isn’t the flex material – it’s the installation quality common in Duluth’s fast-built subdivisions. If your flex is collapsing from condensation degradation, we may recommend section replacement as part of the seal.
Sealing stops air from leaking out; insulation stops temperature from bleeding through the duct walls. In Duluth’s climate, you typically need both: sealing first to fix the leaks, then insulation to prevent 130°F attic air from reheating your cooled supply before it reaches the room. We price them separately so you can phase the work if needed, though doing both together gives the best efficiency return.
We assess corrosion, structural integrity, and leak severity during our free inspection. If the metal is sound and the leaks are at accessible joints, sealing with mastic and mechanical fasteners is cost-effective and can extend service life significantly. If the galvanized has rusted through or collapsed in sections, we’ll tell you straight and discuss replacement options. We don’t sell sealing on ducts that need replacing – that’s not how we built our reputation in Duluth.
It helps indirectly by reducing the negative pressure that pulls attic and crawlspace air into your return stream. When your return ducts leak, they suck in pollen, red clay dust, and mold spores from unconditioned spaces – then distribute them through every room. Sealing the return side, combined with proper filtration from Aprilaire or Honeywell products, cuts that infiltration significantly. You’ll still need regular filter changes during pollen season, but the source of the dust load drops.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Duluth since 2004.