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 Mableton
Duct sealing in Mableton typically runs $450 – $1,200 for a whole-home seal, depending on how much of the system is accessible and whether we need to replace crushed flex runs or just seal disconnected collars. Most jobs take a half day, and you’ll get a written price before we touch anything. Call (361) 326-5060 for a free estimate.
We’ve been working in Mableton long enough to know the difference between a house off Floyd Road built in 1984 and a 1997 subdivision near Veterans Memorial Highway. The duct problems are different. The materials are different. And the fix is different. Our crews dispatch from our Atlanta office and carry the tools to handle both the crushed flex runs we find in older attics and the long trunk-line leaks common in two-zone systems from the 1990s.
Mableton’s housing stock is specific. Decades of heat-pump runtime through original flexible ductwork mean we don’t walk into your home guessing. We inspect first, quote in writing second, and seal only what’s sealable.
Why Hollis Air Duct Cleaning Is Mableton’s Preferred Duct Sealing Company
Hollis Air Duct Cleaning has worked in Cobb County since 2004 as part of the Garrison Partners family. In Mableton specifically, we’ve sealed ducts in the ranch neighborhoods off Mableton Parkway, the split-levels near the old Cooper Middle School corridor, and the two-story colonials in the subdivisions that went up during the 1990s building boom. We know which attics hit 120°F in July and what that does to R-4 flex duct over thirty years.
Our technicians are background-checked and uniformed, and they operate under The Garrison Standard: arrive inside the quoted window, price in writing before work starts, complete the job by the book, and leave the site clean. Every duct sealing job in Mableton carries our 365-Day Done Right Promise. If the seal fails or a disconnected collar we repaired separates again within a year, we come back at no charge. That includes a free second visit, not a negotiation.
Phones are answered by a live person 24 hours a day, 7 days a week. No voicemail loops. No callback queues. When you’re trying to figure out why your heat pump runs constantly through an August night, you don’t want to wait until Monday for a human voice.
Duct Insulation in Mableton
Duct Insulation in Mableton is usually a repair, not an upgrade. The original R-4 or R-6 flexible duct in unconditioned attics has been baking at triple-digit temperatures since the Reagan administration. The outer jacket tears. The insulation compresses. And suddenly your 55°F supply air is traveling through a 115°F attic in a thin plastic sleeve with no thermal protection.
We reinsulate with R-8 duct insulation, which is the current standard for attic runs in this climate. The job involves removing the damaged flex, sealing the collar connections with mastic, then wrapping or replacing the run with properly insulated duct. In Mableton, a typical reinsulation of 3 – 4 attic runs runs $380 – $720.
When Attic Heat Destroys R-Value
The flex duct popular in Mableton’s 1980s subdivisions was never meant to last forty years in an attic that functions like a solar oven. Once the fiberglass insulation inside compresses or the vapor barrier tears, the R-value drops to nearly nothing. Your heat pump works harder to push the same air. Your bill climbs. We see this on every third job in the older neighborhoods.
Reinsulating vs. Replacing
Sometimes the inner liner is intact and we can reinsulate the existing run. Sometimes the duct is crushed, kinked, or pest-damaged and replacement is the only option. We check with a camera before we quote. You’ll know which path we’re taking and why.
HVAC Duct Sealing in Mableton
HVAC Duct Sealing in Mableton starts with understanding what kind of house you have. A 1978 slab ranch with under-slab returns needs a different approach than a 1995 two-story with two-zone flex runs in the attic. We don’t quote blind. We inspect with a scope, separate the sealable attic runs from the unreachable under-slab ductwork, and give you a written price for only what we can actually fix.
Sealing involves finding disconnected collars, crushed elbows, and torn outer jackets, then reconnecting and sealing with mastic or mechanical fasteners. For a typical Mableton home with accessible attic ductwork, whole-system sealing runs $450 – $950. Jobs that require replacing multiple crushed runs or sealing long trunk lines in two-zone systems can reach $1,100 – $1,200.
The Under-Slab Problem
In Mableton’s older slab-foundation ranches, the return ducts often run under the concrete. We can’t seal what we can’t reach. Our camera inspection identifies this before we quote. If your supply runs are leaking in the attic but your returns are losing pressure under the slab, we’ll tell you exactly what sealing will and won’t fix. No guesswork.
Heat Pump Systems Run Longer
Mableton homes rely on heat pumps, not gas furnaces. Heat pumps move more air volume to deliver the same heating or cooling. That means duct leaks cost you more here than in a gas-furnace city. A 15% leak in a heat-pump system is a bigger efficiency hit than the same leak in a furnace system. Sealing matters more.
Trusted Brands We Service in Mableton
Our crews carry professional-grade equipment from Rotobrush, Nikro, and Abatement Technologies, and we stock filtration and sealing products from Aprilaire and Guardsman. For Mableton homeowners, this means we don’t have to order parts and come back next week. The mastic, the R-8 insulation, the mechanical collars, and the replacement flex are on the van. Most sealing jobs in Mableton finish in a single visit because the right materials are already loaded.
Common Duct Sealing Problems We See in Mableton Homes
- Crushed flex runs in 1980s attics. The 8-inch flexible duct installed in Mableton’s split-levels and ranches was lightweight and easy to install, but it collapses under foot traffic, storage boxes, or its own weight after decades. We find runs flattened to half their diameter, forcing the heat pump to overwork for years.
- Torn outer jackets letting attic air into supply runs. When the vapor barrier on original R-4 duct splits, the fiberglass insulation gets wet from condensation, compresses, and falls away. Then the inner liner tears, and your system is literally pumping 120°F attic dust into your bedrooms.
- Disconnected collars at trunk-line elbows in 1990s two-zone systems. The subdivisions off Veterans Memorial Highway often have long trunk lines with multiple takeoffs. The elbows are stress points. After twenty-five years of heat-pump cycling, the collars separate and dump conditioned air into the attic before it reaches the registers.
- Pest nesting in pre-1985 flexible duct. The older flex runs have softer, more porous outer jackets. Squirrels and rats chew through to nest in the insulation. We check for this on every pre-1985 Mableton home and replace damaged sections rather than seal over them.
Pricing for Duct Sealing in Mableton, GA
A typical duct sealing job in Mableton runs $450 – $1,200 for a whole-home seal. Here’s how that breaks down:
- Basic seal of 3 – 5 accessible attic runs with mastic and collar repair: $450 – $650
- Moderate job including replacement of 1 – 2 crushed flex runs and reinsulation: $680 – $950
- Complex two-zone system with long trunk-line sealing and multiple run replacements: $980 – $1,200
- Duct insulation upgrade from R-4/R-6 to R-8 on 3 – 4 runs: $380 – $720
What moves the price: accessibility of the attic, how many runs need replacement versus simple sealing, whether we need to remove old pest damage, and whether your system has under-slab returns that limit what we can fix. We don’t do per-vent pricing. One flat price per system, agreed in writing before work starts. Call (361) 326-5060 for a free estimate. We’ll inspect, scope what’s reachable, and give you the exact number.
We Also Serve Cities Near Mableton
Our crews work throughout Cobb County and into the adjacent metro area. We regularly seal ducts in Mableton as well as Austell, Smyrna, Powder Springs, and Atlanta. The same written pricing, the same 365-Day Done Right Promise, and the same background-checked, uniformed technicians apply in every city we serve. If you’re in the Mableton area, our Duct Sealing team is the crew to call.
Serving Mableton, GA - Our Local Coverage Area
We’re based in the Mableton 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 Mableton
We can usually seal 1978 attic ductwork if the inner liner is intact and the runs aren’t crushed. We start with a camera inspection to check for torn outer jackets, pest damage, and collapsed sections. If the flex is kinked or the insulation is saturated, replacement makes more sense than sealing. Call (361) 326-5060 and we’ll scope it before we quote.
Because duct cleaning doesn’t fix leaks. If your supply runs are dumping cooled air into a 120°F Mableton attic through disconnected collars or crushed flex, the heat pump never reaches setpoint and keeps running. Sealing stops the leaks so the air actually reaches your rooms. We see this pattern constantly in the older neighborhoods off Floyd Road.
Yes. The flexible duct in pre-1985 Mableton homes has softer outer jackets that squirrels and rats chew through to nest in the insulation. We inspect every run with a camera before sealing. If we find nests, droppings, or chewed sections, we replace that run rather than seal over the damage.
Duct cleaning removes debris from inside the duct. Duct sealing stops conditioned air from escaping before it reaches your rooms. In Mableton’s heat-pump homes, sealing is often the bigger efficiency gain because leaks force the system to run longer and harder. Cleaning a leaky duct is like washing a bucket with holes in it.
If your rooms are hot in summer and cold in winter but airflow at the register feels normal, you likely need insulation. If some rooms have strong airflow and others have almost none, or your heat pump runs constantly, you likely have leaks that need sealing. Many Mableton homes need both. We inspect with thermal cameras and pressure testing to tell you which applies. Call (361) 326-5060 for a free evaluation.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Mableton since 2004.