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
Before
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Before
AfterFast, Reliable Duct Sealing Across Decatur
Duct sealing in Decatur typically runs $350 – $850 for a whole-home system, and most jobs are completed in a single visit. Our crews are dispatched from the Atlanta office and serve Decatur directly, so we know the crawlspaces under your Oakhurst bungalow and the flex runs in your Winnona Park cottage the same way we know our own equipment. If your registers blow dust, your back bedroom never cools, or your power bill climbs every summer, the problem is often not your HVAC unit. It’s the gaps, separations, and crushed runs in the ductwork between your air handler and your walls. Call (361) 326-5060 for a free estimate. We’ll put the price in writing before we touch anything.
Why Hollis Air Duct Cleaning Is Decatur’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our Duct Sealing in Decatur work is built on The Garrison Standard: arrive inside the window, price in writing, do it by the book, leave the site clean. Our technicians are background-checked and uniformed, and our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues.
Decatur homeowners call us back because we treat their pier-and-beam crawlspaces with the care those spaces demand. We don’t sell replacement ductwork when sealing and reconnection will fix the problem. Our 365-Day Done Right Promise covers every sealing job in writing: if the work fails within a year, we return and make it right at no charge, including a free second visit. That promise is backed by written pricing that does not move at the door.
We carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and we stock filtration products from Honeywell and Aprilaire for Decatur customers who need system upgrades after the sealing is done. Fast turnaround on parts means your system isn’t down for days.
Duct Sealing Services in Decatur
Duct Sealing Services in Decatur are not a luxury add-on for newer homes. They’re a repair necessity for the 1920s – 1950s bungalows and cottages that make up so much of this city’s in-town housing stock. Original flex duct runs through vented crawlspaces, exposed to humid Georgia ground air and rodent traffic. Seams separate. Joints disconnect. Crushed runs flatten under foot traffic or settling. Our Duct Sealing team addresses each failure mode with source removal first, then mechanical reconnection, then mastic and mesh tape sealing tested for static pressure balance. A typical whole-home duct sealing job in Decatur runs $350 – $850, with larger homes or multiple disconnected runs toward the higher end.
Source Removal Before Sealing
We never seal over debris. In Decatur, pine straw, oak pollen, and sweetgum seed pods pack into return chases and mask leaky seams. Our crew removes this material under negative pressure with HEPA filtration so we’re sealing clean metal and flex, not trapping organic matter inside.
Static Pressure Testing After Repair
Sealing an undersized system without checking static pressure can burn out your blower motor. We test airflow at the far registers after every Decatur job to confirm the system can breathe through its newly sealed runs.
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 Decatur
Duct Insulation in Decatur addresses a problem that slab-built suburban homes rarely face: exposed flex duct in vented crawlspaces sweating with condensation, then growing mold, then losing thermal efficiency through damp, compressed fiberglass. In Decatur’s humid subtropical climate, uninsulated or poorly insulated ductwork in pier-and-beam foundations is a year-round energy drain. Our crews install closed-cell foam or foil-faced insulation around sealed runs to stop condensation, prevent rodent re-entry, and maintain the temperature of conditioned air from the air handler to the register. Typical duct insulation work in Decatur runs $400 – $950 depending on linear footage and accessibility.
Crawlspace Moisture Barriers
Where ground moisture is severe, we recommend pairing duct insulation with a vapor barrier on the crawlspace floor. This is common in Winnona Park and Oakhurst homes where the clay soil holds humidity against pier-and-beam foundations.
Rodent Exclusion Wrapping
Insulation alone won’t stop determined rats or squirrels. We use hardened, chew-resistant outer wraps on exposed crawlspace runs in Decatur’s older neighborhoods where rodent pressure is highest.
Trusted Brands We Service in Decatur
Hollis Air Duct Cleaning stocks local parts for Decatur homeowners using equipment from Nikro negative-air machines, Honeywell filtration systems, and Aprilaire whole-home purifiers. We also carry Abatement Technologies HEPA filtration products for jobs requiring containment-grade air scrubbing. When your sealing job reveals a failing air handler, corroded coil, or undersized return, we can source replacement components without the week-long waits that plague homeowners who call national dispatch centers. Our technicians arrive with the tools and materials to complete most Decatur jobs in one visit.
Common Duct Sealing Problems We See in Decatur Homes
- Disconnected joints in pier-and-beam crawlspaces. Decatur’s humid ground air swells and shrinks flex duct tape and mastic, while rodent traffic separates seams. We find three or more disconnected joints in roughly half the crawlspace systems we inspect in Oakhurst and Winnona Park.
- Crushed flex runs from foot traffic or settling. Original 1940s – 1950s flex duct was not designed for decades of maintenance access. Technicians, plumbers, and homeowners stepping between piers flatten runs and kill airflow to back bedrooms.
- Leaf litter and pine straw packed into returns. Decatur’s dense tree canopy, one of the heaviest in metro Atlanta, dumps organic debris that gets pulled through exterior grilles and packed against interior duct walls. Homeowners sometimes seal over this debris, trapping it inside.
- Undersized original duct chases creating static pressure problems. Gravity and early forced-air systems moved less air. Modern central HVAC forced through those original chases strains blowers and creates whistle noises at registers. Sealing without resizing can make the problem worse.
Pricing for Duct Sealing in Decatur, GA
Whole-home duct sealing in Decatur typically costs $350 – $850. Smaller cottages with accessible crawlspaces and two to three disconnected joints fall toward the lower end. Larger homes with crushed runs, multiple separations, or rodent-damaged flex requiring partial replacement run higher. Duct insulation adds $400 – $950 depending on linear footage. Every Hollis job receives a written price before work begins, agreed to at the door, with no per-vent pricing tricks or post-inspection upsells. We photograph your ductwork before and after so you see what was found and what was fixed. Call (361) 326-5060 for a free estimate. Estimates include camera inspection of accessible runs and static pressure readings at the registers.
We Also Serve Cities Near Decatur
Our crews travel regularly to Scottdale, Clarkston, Stone Mountain, and Tucker for duct sealing and insulation work. The same pier-and-beam housing stock and heavy canopy conditions extend through much of this corridor, and we bring the same written pricing, 365-Day Done Right Promise, and background-checked technicians to every job.
Serving Decatur, GA - Our Local Coverage Area
We’re based in the Decatur 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 Decatur
Most Oakhurst bungalows keep their original ductwork with proper sealing and reconnection. Our crew was called to a 1948 bungalow off West Ponce de Leon in Oakhurst where the homeowner complained of dust blowing from the registers and uneven cooling in the back bedroom. A camera inspection revealed a crushed flex run under the pier-and-beam foundation and three disconnected joints at the supply and return ducts near the air handler, with pine straw and leaf litter packed into the return chase. We performed source removal under negative pressure with HEPA filtration, reconnected and sealed the separated joints with mastic and mesh tape, then insulated the exposed crawlspace runs to stop condensation and rodent re-entry. The homeowner’s airflow readings at the far registers came up measurably and the dust complaints stopped. Full replacement is only necessary when flex is shredded by rodents or degraded to the point of crumbling. Call (361) 326-5060 and we’ll inspect before recommending either path.
Decatur’s in-town bungalows in Oakhurst and Winnona Park were built with pier-and-beam foundations where flex duct runs through vented crawlspaces – meaning the ducts are exposed to humid Georgia ground air, rodent traffic, and organic debris pulled in from the oak and sweetgum canopy, conditions that accelerate seam failure and joint separation far faster than in newer slab-built metro Atlanta homes. Suburban homes built after 1980 typically have ductwork in conditioned or semi-conditioned attics with less moisture cycling and no rodent access from bare earth. Your Decatur home isn’t poorly built. It was built for a different HVAC era, and the sealing maintenance cycle reflects that. Call (361) 326-5060 for an inspection and we’ll show you exactly what your crawlspace runs look like.
Sealing alone won’t stop debris entry if your return grille is pulling air from outside or through unsealed wall cavities. In Decatur, the massive oak and sweetgum canopy dumps so much pollen and organic debris that return grilles and outdoor condenser fins can clog within weeks each spring. We address this by sealing the duct system at the return chase, upgrading filtration at the air handler with Honeywell or Aprilaire media filters rated for pollen capture, and inspecting whether your return path is drawing from attic or crawlspace openings rather than conditioned space. The sealing prevents the debris from circulating through disconnected seams; the filtration stops it at the source. Call (361) 326-5060 and we’ll diagnose the full air path, not just the visible grille.
Yes, but we treat the mold first. Decatur sits in a humid subtropical climate with intense spring pollen and long, humid summers; this combination drives heavy mold and mildew growth inside ductwork and makes annual coil and drain-pan maintenance critical to prevent microbial contamination. Sealing over active mold traps spores inside and can worsen air quality. Our process: source removal with Nikro negative-air machines and Abatement Technologies HEPA filtration, then antimicrobial treatment of affected surfaces, then sealing with mastic and mesh tape, then insulation to stop the condensation that feeds regrowth. The 365-Day Done Right Promise covers our sealing work; if mold returns because of condensation on our sealed runs, we come back at no charge. Call (361) 326-5060 for a mold assessment before sealing.
We arrive inside the quoted window, photograph the existing ductwork, and run a camera through accessible crawlspace runs. In Decatur pier-and-beam homes, we typically find disconnected joints, crushed flex, or rodent entry points within the first ten minutes. We quote the repair in writing – one flat price per system, no per-vent add-ons. With approval, we perform source removal under negative pressure, reconnect separated runs, seal with mastic and mesh tape, test static pressure at the air handler and airflow at the far registers, then insulate exposed runs if needed. Most Decatur crawlspace jobs take four to six hours. You receive before-and-after photos and a written invoice matching the quoted price. The 365-Day Done Right Promise is printed on every document. Call (361) 326-5060 to schedule.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Decatur since 2004.