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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AfterFast, Reliable Duct Sealing Across McDonough
Duct sealing in McDonough typically costs $450 – $1,200 for a whole-home seal depending on system size and accessibility, and most jobs are completed in a single visit. If your utility bills are climbing or certain rooms never reach the thermostat setpoint, leaking ducts are the likely culprit. Call (361) 326-5060 for a free estimate with a written price before any work starts.
We serve McDonough from our Atlanta dispatch office, and our crews know the subdivisions that line Highway 81 and Jonesboro Road. We’ve worked in the brick-front traditions off Lake Spivey Parkway and the vinyl-sided builds near Kelleytown. McDonough isn’t a generic metro suburb to us. It’s a city where the housing boom of the late 1990s through the 2010s left behind a specific problem: builder-grade flex-duct systems that were never properly sealed at the drywall, now leaking conditioned air and pulling attic dust into bedrooms. That’s the work we do here.
Why Hollis Air Duct Cleaning Is McDonough’s Preferred Duct Sealing Company
We’ve been part of the Garrison Partners family since 2004, and our McDonough customers know what that means. The Garrison Standard requires a written price before any tool comes out of the van, a technician who arrives inside the quoted window, and a 365-Day Done Right Promise backed in writing on every job. If the seal fails within a year, we come back and make it right at no charge, including a free second visit.
Our technicians are background-checked and uniformed. You know who’s walking into your home before they arrive. We use professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and our sealing materials include mastic and mesh tape rated for the temperature swings and humidity that McDonough attics see. Phones are answered by a live person 24 hours a day, seven days a week. No voicemail loops. No callback queues.
Dispatch and scheduling are coordinated from our Atlanta office, but the crews serving McDonough live and work locally. They understand that a home off Eagles Landing Parkway faces different duct conditions than one in the older builds near the historic square. Local knowledge matters when you’re tracing airflow problems in a city built this fast.
Duct Repair in McDonough
Duct Repair in McDonough is often the first step before sealing can begin, because flex-duct systems in 10-to-25-year-old subdivision homes frequently have physical damage that no amount of mastic can fix. We find crushed runs where an installer stepped on the duct during construction, sagging sections that pulled loose from supports, and disconnected collars where tape failed in the attic heat. A typical duct repair in McDonough runs $180 – $450 per damaged section, with whole-system repairs for multiple failures ranging $600 – $1,100. We always inspect with a camera first so you’re not paying for guesswork.
Crushed and Disconnected Flex Runs
McDonough’s builder-era homes use flexible R-6 or R-8 duct run through unconditioned attic space. It’s lightweight and cheap to install, which is why builders loved it. But it’s also easy to crush underfoot, kink around a truss, or leave unsupported so it sags and pools condensation. We replace damaged sections with properly supported flex or hard pipe where the run allows, then seal the connections.
Failed Tape and Mastic at Joints
The original foil tape and mastic applied during construction degrades after years of McDonough humidity and attic temperature swings. We strip the old material, clean the joint, and apply fresh mastic reinforced with mesh tape. This is standard work, but we see it skipped or done poorly on homes where the original builder was rushing to close out a phase.
Air Duct Sealing in McDonough
Air Duct Sealing in McDonough addresses the leaks that let conditioned air escape into your attic and unfiltered attic air get pulled into your living space. We use a two-part approach: a blower-door or pressure-pan test to locate leaks, then manual sealing with mastic and mesh tape at every joint, boot, and penetration. A whole-home air duct sealing job in McDonough typically runs $450 – $1,200 depending on system size, attic accessibility, and whether we need to repair damaged ductwork first. We quote the full price in writing before starting.
Sealing Supply Boots to Drywall
This is the McDonough-specific problem we see more than anywhere else in the metro. The supply boot, the metal fitting behind your wall register, should be sealed to the drywall with mastic or foam so air goes through the register, not around it. In subdivision builds here, that step was routinely skipped. We remove the register, clean the gap, and seal it properly. The difference in room temperature and dust levels is immediate.
Sealing Attic Connections and Plenums
The main trunk lines and plenum connections in your attic are where the biggest volume of air escapes. We inspect every joint, every takeoff, and every boot collar. Mastic goes on thick, mesh tape reinforces it, and we verify the seal holds under pressure. No shortcuts. The Garrison Code doesn’t allow them.
Trusted Brands We Service in McDonough
We stock sealing and filtration products from Aprilaire, Abatement Technologies, and Guardsman for McDonough jobs, and our equipment roster includes Rotobrush rotary brush systems and Nikro negative-air machines. That means when we find a problem during sealing, we don’t need to order parts and come back. The van carries what the job requires. For homeowners in subdivisions off Jonesboro Road or near the Lake Spivey area, that translates to one visit, one crew, and one written price from start to finish.
Common Duct Sealing Problems We See in McDonough Homes
- Unsealed supply boots behind drywall registers. In McDonough’s rapid-build subdivisions, crews often skipped sealing the boot to the drywall to save time. The result is a hidden gap that pumps attic air, drywall dust, and red-clay grit straight into bedrooms every time the blower cycles.
- Sagging flex-duct runs in unconditioned attics. McDonough’s humid subtropical climate means attics hit extreme temperatures, and unsupported flex duct softens, sags, and disconnects. We re-support and replace sections before sealing.
- Failed mastic from summer sweating. Long humid summers in McDonough cause attic ducts to sweat at joints and boot collars, degrading the original sealant. We use fresh mastic rated for the conditions and reinforce with mesh tape.
- Construction debris in new-to-you homes. Because so many McDonough subdivisions went up in tight phases on former farmland, we regularly find drywall dust, sawdust, and red-clay grit coating duct interiors. Sealing without cleaning first just traps the debris, so we source-remove it under negative pressure with HEPA filtration before we seal.
Pricing for Duct Sealing in McDonough, GA
Whole-home duct sealing in McDonough typically runs $450 – $1,200. A single supply-boot seal or small repair starts around $180 – $340. Whole-system sealing for larger homes with multiple zones or difficult attic access can reach the upper end of that range. What moves the price: how many boots need sealing, whether flex runs need repair or replacement first, attic accessibility, and whether we need to clean construction debris before sealing.
We don’t quote per-vent teaser prices that balloon at the door. We inspect, we write the full price down, and that number doesn’t move once work begins. Every McDonough estimate is free. Call (361) 326-5060 to schedule.
We Also Serve Cities Near McDonough
Our crews also handle Duct Sealing in Locust Grove, Stockbridge, Covington, and Hampton. Same equipment, same written pricing, same 365-Day Done Right Promise. If you’re in a neighboring city and found this page because the McDonough description sounded familiar, the construction patterns probably match. Call and we’ll confirm.
Serving McDonough, GA - Our Local Coverage Area
We’re based in the McDonough 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 McDonough
Builder-grade construction in McDonough’s rapid-growth subdivisions often skipped sealing supply boots to drywall and used minimal mastic at attic joints. Those shortcuts don’t show up immediately, but after a few years of thermal cycling and humidity, gaps open and dust gets pulled in. A 2015 home is right in the window where those original seals start failing. Call (361) 326-5060 for a camera inspection.
Leaking ducts usually show up as uneven temperatures between rooms, rising utility bills, or dust that returns quickly after cleaning. Dirty ducts circulate debris but don’t typically make one bedroom 8 degrees warmer than another. We use pressure testing and camera inspection to tell the difference before quoting any work. Call (361) 326-5060 and we’ll diagnose it.
Yes. The fine clay particulate gets tracked into return-air pathways, pulled through gaps in the return plenum, and deposited throughout the system. In McDonough homes with unsealed boots or return leaks, we regularly find a layer of red dust coating duct interiors. Sealing the leaks stops the inward migration, and source removal clears what’s already inside.
Every supply boot should have been sealed to the drywall with mastic or foam. Every attic joint should have received mastic reinforced with mesh tape, not just foil tape. Flex runs should have been properly supported to prevent sagging. And the system should have been cleaned before occupancy to remove construction debris. Many McDonough builders skipped one or all of these steps during phased construction. We fix what they left behind.
Sealed ducts stop your system from pulling unfiltered attic air, which carries pollen, dust, and humidity, into your living space. In McDonough’s long pollen season, that means less oak and pine particulate circulating indoors. In summer, sealed ducts reduce the humidity load your AC must handle, which can lower run times and energy use. Call (361) 326-5060 for an estimate on what sealing would do for your specific system.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving McDonough since 2004 as part of the Garrison Partners family.