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 Brookhaven
Duct sealing in Brookhaven typically runs $400 – $900 for a whole-home system, and most jobs take a half day to complete. We dispatch crews from our Atlanta office and serve Brookhaven neighborhoods like Ashford Park, Drew Valley, and Brittany directly. If your HVAC runs constantly, rooms stay uneven, or your March filter loads up with yellow pine pollen in a week, you likely have duct leakage pulling unconditioned attic air and outdoor debris into your living space. Call us at (361) 326-5060 for a written estimate before any work starts.
We’ve worked Brookhaven long enough to know the local housing stock isn’t uniform. Original 1950s brick ranches with galvanized trunk-and-branch systems sit next to 2000s teardown rebuilds where new flex duct was layered over old hard pipe that was never removed. That hybrid setup is why our Duct Sealing team treats most Brookhaven jobs as two-generation reconciliations, not simple joint-sealing exercises.
Why Hollis Air Duct Cleaning Is Brookhaven’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has been part of the Garrison Partners family since 2004. We operate under The Garrison Standard: written prices before work begins, background-checked uniformed technicians, and a 365-Day Done Right Promise backed in writing on every job. If the seal fails within a year, we return and make it right at no charge, including a free second visit.
Our phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops, no callback queues. Scheduling and dispatch for Brookhaven are coordinated from our Atlanta office, and crews arrive inside the quoted window with the tools already on the van. We use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and we stock filtration products from Aprilaire and Guardsman so we’re not waiting on parts.
Roy Castellanos leads our operation, and The Garrison Code governs how every technician behaves on a job: arrive squared away, price in writing, complete the work by the book, leave the site clean. Brookhaven homeowners have seen enough crews who disappear after the invoice is paid. We don’t operate that way.
Duct Repair in Brookhaven
Duct Repair in Brookhaven usually starts with a camera inspection, because the visible flex duct in a 2000s rebuild often hides abandoned galvanized trunk lines underneath that are still tied into the return. We see this in Ashford Park and Drew Valley regularly. The job involves identifying whether the leak is in the live system, the dead pipe, or the hybrid joints where the two meet, then repairing or capping as needed. Most Brookhaven duct repairs run $250 – $600 depending on accessibility and whether we need to open a chase or slab burial.
Dead-Duct Capping
When camera inspection finds an abandoned galvanized trunk still open to the return, we cap it at the source. Sealing the visible joints on the new flex duct won’t stop the blower from pulling dirty air through a pipe that hasn’t been live in twenty years. This step is non-negotiable for a proper seal.
Chase and Slab Access
In Brittany and parts of Ashford Park, 1970s and 1980s two-story homes have duct runs buried in concrete slab or framed chases. Access is limited, so we use borescope cameras to locate the failure before cutting anything open. Repair estimates for buried duct run higher, typically $450 – $800, because of the labor involved in reaching the leak.
Air Duct Sealing in Brookhaven
Air Duct Sealing in Brookhaven means applying mastic and fiberglass mesh to every joint, seam, and penetration in the duct system, then verifying the seal with a pressure test. On hybrid systems, we seal the new flex-to-trunk connections, cap any abandoned lines, and treat the attic penetrations where flex duct enters conditioned space. A typical whole-home seal in Brookhaven runs $400 – $900, with larger homes or complex hybrid systems toward the upper end.
Mastic and Mesh Application
We brush on water-based duct mastic, a thick sealant that remains flexible, then embed fiberglass mesh tape at stress points. This outlasts foil tape by years, especially in Brookhaven attics where summer temperatures hit 130 – 150°F and tape adhesive degrades fast.
Pressure Verification
After sealing, we run a duct blaster or manometer test to measure leakage in CFM at 25 Pascals. The target is under 10% of system airflow. If we don’t hit it, we find the missed joint and reseal. The number is written on the invoice.
Trusted Brands We Service in Brookhaven
We carry professional-grade equipment and parts from Rotobrush, Nikro, Abatement Technologies, Aprilaire, and Guardsman on every Brookhaven job. Rotobrush rotary brush systems handle debris removal in hybrid ducts. Nikro negative-air machines maintain containment during sealing work. Aprilaire and Guardsman filtration products replace what your system currently uses, so you’re not waiting on a parts run to Atlanta. For Brookhaven’s pollen-heavy environment, we stock higher-MERV options that catch the yellow-green dust loading your registers every March without choking airflow on older systems.
Common Duct Sealing Problems We See in Brookhaven Homes
- Abandoned galvanized trunk lines left open under new flex duct. In Ashford Park and Drew Valley, teardown rebuilds routinely wrapped new flex over old hard pipe without capping it. The return pulls decades of debris from a dead duct no matter how well the visible joints are sealed.
- Flex duct sweating and sagging in summer attics. Brookhaven’s unconditioned attics hit 130 – 150°F, and the humidity makes flex duct sweat against insulation. Sealant and tape fail early, and microbial growth opens pathways the original seal was meant to close.
- Spring pine and oak pollen loading past failed seals. The region’s heavy canopy dumps visible yellow-green dust into return grilles every March. On 1950s – 60s galvanized trunk-and-branch systems never built for modern static pressure, that pollen works through gaps that didn’t matter when the house was new.
- Hybrid joints between mismatched duct generations. Where new flex meets old galvanized, the connection method is often a friction fit or zip-tie rather than a proper collar and seal. These leak by design and need mastic and mesh to hold.
Pricing for Duct Sealing in Brookhaven, GA
A typical whole-home duct sealing in Brookhaven runs $400 – $900. Smaller ranch homes with straightforward access and a single duct generation land near $400. Larger teardown rebuilds with hybrid systems, abandoned trunk lines to cap, and attic work in tight quarters run toward $800 – $900. Duct repair, when needed before sealing, adds $250 – $600 depending on whether we’re chasing a buried leak or capping accessible dead pipe.
What moves the number: attic accessibility, whether we need to open chases or slab burial, the extent of abandoned duct work, and whether filtration upgrades are part of the job. We give one flat price per system, agreed in writing before any work starts. No per-vent pricing, no add-ons at the door. Estimates are free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near Brookhaven
Our crews work Brookhaven regularly and also serve Atlanta, South Fulton, Sandy Springs, and Roswell. Each job gets the same written price, same 365-Day Done Right Promise, and same live-answer scheduling no matter which city we’re driving to.
Serving Brookhaven, GA - Our Local Coverage Area
We’re based in the Brookhaven 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 Brookhaven
Because teardown rebuilds in Ashford Park and Drew Valley frequently left original galvanized trunk lines in place when new flex duct was installed. If we seal the visible joints but leave the old pipe open to the return, the blower keeps pulling dirty air through a dead duct. Capping comes first. Call (361) 326-5060 if you’re unsure whether your home has this issue.
Heavy pine and oak pollen every March loads filters fast and pushes fine particles through any gap in the duct system. Sealing before pollen season starts, or immediately after if you’re already suffering, keeps that debris in the attic instead of your living space. We see the worst pollen infiltration in homes with 1950s – 60s galvanized systems that were never designed for modern filtration.
Unconditioned attics here hit 130 – 150°F in summer and stay damp in winter. Foil tape adhesive degrades in months under those conditions. We use water-based mastic with fiberglass mesh, which remains flexible and bonded through thermal cycling. Even so, we inspect our work at the one-year mark under the Done Right Promise.
Yes. These homes often have duct runs buried in slab or framed chases, which limits access and changes how we approach the job. We use borescope inspection before cutting anything open, and repairs run higher because of the labor to reach the leak. The sealing material is the same, but the method of application differs.
We start with camera inspection to map live duct, dead duct, and hybrid joints. We cap or source-seal abandoned galvanized trunk lines, apply mastic and mesh to all live joints, seal attic penetrations, and verify with pressure testing. On one Ashford Park job, we found a 2000s rebuild where new flex had been run directly over the original galvanized trunk that was never pulled; the old pipe was still tied into the return, so the blower was dragging decades of debris out of a dead duct. We capped the abandoned trunk, sealed the hybrid joints with mastic and mesh, and used negative pressure with HEPA filtration to source-remove the loose debris before the system could re-entrain it. The homeowner’s March pine-pollen dust at the registers dropped dramatically on the next filter cycle. Call (361) 326-5060 for an exact quote on your system.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Brookhaven since 2004.