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 North Atlanta
Duct sealing in Carrier in North Atlanta homes usually costs between $450 and $1,800 depending on how much of the system has failed, and most jobs are completed in a single day. We work throughout North Atlanta from Sandy Springs to Dunwoody, and our crews know exactly what decades of Georgia attic heat does to flex duct. If you’re losing air through disconnected runs or sweating ductwork, call (229) 489-7780 and we’ll camera-inspect the system before quoting a thing.
This page gives North Atlanta homeowners a realistic look at what our techs find inside 1980s – 2000s flex duct, and why sealing is often the real fix after a cleaning. You won’t get a sales pitch here. You’ll get the failure modes we actually see, the price ranges for this market, and the standard we hold ourselves to on every job.
Key Takeaways
- Whole-system duct sealing in North Atlanta typically runs $450 – $1,800, with $900 – $1,200 common for a 2,000 – 2,500 sq ft home.
- Homes built between 1980 and 2005 often have original flex duct that delaminates from attic heat and needs replacement, not just tape.
- We write the price before any work starts and cover every job with the 365-Day Done Right Promise in writing.
- Duct sealing is not a safe DIY project for most homeowners. Accessing attic runs and sealing joints properly requires training and equipment.
Styles & brands we work with
Why Hollis Air Duct Sandy Springs Is North Atlanta’s Preferred Duct Sealing Company
North Atlanta homeowners call us because we show up inside the quoted window, write the price before we touch anything, and leave the site cleaner than we found it. That’s The Garrison Code, and every technician follows it. Roy Castellanos leads our operations, and he holds the crew to one standard: run the job by the book or don’t run it at all.
Our Duct Sealing team has worked on hundreds of homes in this part of North Atlanta, many of them built in the 1980s and 1990s. We know what original duct materials look like after 25 summers in a 140°F attic. That local knowledge changes how we quote a job, because we can tell you before we open the attic hatch whether you’re looking at sealing or full run replacement.
Every call is answered by a live person, 24 hours a day, seven days a week. No voicemail trees. No calling back three times. When you call (229) 489-7780, a person picks up and schedules your inspection.
Duct Repair in North Atlanta
Duct repair in North Atlanta usually means camera-inspecting a system to find disconnected, crushed, or torn flex runs, then replacing or re-supporting the failed sections and sealing every joint with mastic and UL-listed tape. Homeowners call us when rooms won’t cool evenly, when energy bills climb, or when a ceiling stain shows condensation dripping from a duct above. Whole-system duct repair in North Atlanta typically runs $350 – $1,200 depending on how many runs have failed.
Camera Inspection Before Repair
We don’t guess. We run a camera through the supply and return runs to see exactly where the system is losing air. On a 1990s North Atlanta home, that inspection often finds 20 – 30% leakage before we even touch a screwdriver.
Replacing Failed Flex Runs
When the inner liner of a flex duct delaminates, no amount of mastic or tape will fix it. The failed section gets removed and replaced with new, properly sized flex, re-supported with saddles, and sealed at both ends. This is the most common repair we make in North Atlanta’s older housing stock.
Air Duct Sealing in North Atlanta
Air duct sealing in North Atlanta is the process of closing every leak in a duct system so that conditioned air reaches the registers instead of spilling into the attic. For most North Atlanta homes, that means mastic and UL-listed tape on all joints, boots, and plenum connections. Air duct sealing in North Atlanta generally costs $450 – $1,800 for a whole system, with most two-story homes landing between $900 and $1,200.
Mastic and UL-Listed Tape
We use water-based mastic brushed onto joints and seams, plus UL-listed foil tape where the mastic needs reinforcement. Cloth duct tape is never part of a sealing job. It dries out in five to seven years in North Atlanta humidity, which is exactly why so many original systems leak.
Register-by-Register Verification
After sealing, we walk the house with an anemometer and check airflow at every register. You get a before-and-after readout of what changed. If a room is still weak, we keep looking until we find the restriction.
Trusted Brands We Service in North Atlanta
We stock and service equipment from Rotobrush, Aprilaire, and Guardsman, and our techs use Abatement Technologies negative-air machines on jobs where our Dryer Vent Cleaning in North Atlanta or source removal is required. That means we’re not running hardware-store gear. We run the same equipment commercial crews use, explained in plain terms on every job. Because we work in North Atlanta regularly, we keep common parts and sealants on the truck, so most repairs don’t require a second visit.
See the difference
Before
After
Before
After
Before
AfterCommon Duct Sealing Problems We See in North Atlanta Homes
- Delaminated flex duct liners. Attic heat above 140°F breaks down the inner liner of original flex duct within 15 – 20 years. The liner peels and sends fiberglass particles into the airstream, and sealing alone can’t restore airflow until the failed run is replaced.
- Dried-out cloth duct tape. Original duct tape on 1980s and 1990s systems peels and fails within five to seven years in North Atlanta humidity. Supply and return leaks pull in attic air at 140°F, which is why a sealed system can drop supply temperatures noticeably.
- Crushed or disconnected runs under blown-in insulation. Runs hidden under insulation in slabs and crawlspaces stay crushed for years. Nobody notices until a blower-door test or camera inspection shows 30% or more leakage.
- Sweating ducts in summer. Condensation on uninsulated or damaged ducts in attic spaces leads to water stains on ceilings. We see a surge of these calls every summer in neighborhoods like Sandy Springs and Dunwoody.
Pricing for Duct Sealing in North Atlanta, GA
A typical whole-system duct sealing job in North Atlanta runs $450 – $1,800. For a 2,000 – 2,500 square foot two-story home, expect $900 – $1,200. That covers camera inspection, mastic and UL-listed tape on all accessible joints, register-by-register airflow verification, and a written report of what was sealed. If we find failed flex runs that need replacement, that’s quoted separately and written down before we start. You’ll never get a price that balloons once the technician is inside. Call (229) 489-7780 for a free estimate, and we’ll put the number in writing.
We Also Serve Cities Near North Atlanta
Our Duct Sealing crews cover North Atlanta and the surrounding metro. We regularly work in Sandy Springs, Holly Springs, Stone Mountain, and Belvedere Park. If you’re just outside our primary service area, call anyway. We’ll tell you straight whether we can get a truck to you this week.
Serving North Atlanta, GA - Our Local Coverage Area
We’re based in the North Atlanta 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 North Atlanta
North Atlanta homes built between the 1980s and 2000s typically have original flexible ductwork running through unconditioned attics where summer temperatures regularly exceed 140°F. That heat delaminates the inner liner and cracks the outer vapor barrier within 15 – 20 years. Newer construction often uses rigid duct or better-insulated flex, but the older stock here was built for a different era. When the liner fails, sealing alone won’t restore airflow. You need source removal and run replacement. Call (229) 489-7780 and we’ll camera-inspect your system to see what’s actually failing.
A sweating duct means condensation is forming on the outside of the duct because warm, humid attic air is hitting a cold duct surface. That’s usually a sign the duct is uninsulated, the insulation has fallen off, or the vapor barrier is torn. You can’t just seal over it. The failed insulation has to be stripped, the duct sealed, and new insulation installed. In a Sandy Springs subdivision off Spalding Drive, our crew camera-inspected a supply duct that had sagged below the attic insulation, showing a six-foot run of crushed flex with condensation dripping onto the ceiling drywall. We source-removed the failed section, re-supported the remaining duct with saddles, and sealed all joints with mastic and UL-listed tape. The homeowner’s upstairs temperature dropped four degrees. Call (229) 489-7780 for an inspection if you’re seeing ceiling stains.
Often, yes. Uneven cooling in two-story North Atlanta homes is frequently caused by leaks in the supply runs that feed upstairs rooms. The attic heat is worst at the top of the house, and the longest duct runs are the ones most likely to be disconnected, crushed, or leaking. Sealing those runs can restore pressure to the upstairs registers and balance the system. If the problem is a failed flex run, we’ll replace it, not just tape it. Call (229) 489-7780 and we’ll check airflow at every register before and after the work, so you can see the change in numbers.
Duct sealing is not a safe DIY job for most homeowners. Working in a hot attic, cutting open plenums, and handling mastic requires training and proper safety equipment. The attic temperatures in North Atlanta summers make it genuinely dangerous to spend extended time up there without preparation. A trained contractor has the camera equipment, the sealing materials, and the airflow testing gear to verify the work actually fixed the leaks. We recommend calling a professional who follows NADCA standards. Call (229) 489-7780 and we’ll do it by the book.
Proper duct sealing with mastic and UL-listed tape typically lasts 15 – 20 years in North Atlanta’s climate, matching the lifespan of the flex duct itself. It significantly reduces mold risk by cutting off the warm, humid attic air that feeds microbial growth inside ducts. But sealing alone won’t kill existing mold. If we find mold during an inspection, we’ll tell you and recommend source removal and sanitization. Every job we do is covered by the 365-Day Done Right Promise. If the sealing fails within a year, we come back at no charge. Call (229) 489-7780 for a free estimate.
Contact Hollis Air Duct Sandy Springs
If your North Atlanta home has uneven cooling, high energy bills, or attic ducts that haven’t been touched since the day they were installed, we’ll inspect the system and tell you what’s actually wrong. No pressure, no moving targets. Call (229) 489-7780 for a free estimate, and we’ll put the price in writing before any work begins.
Written by Roy Castellanos, Owner at Hollis Air Duct Sandy Springs, serving North Atlanta and the surrounding metro.