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 Repair & Sealing Across Dunwoody
Duct repair and sealing in Dunwoody typically costs $450-$1,200 per air handler for standard residential work, with most homes in the area containing two or three separate systems. Our Duct Repair & Sealing team dispatches to Dunwoody from our Atlanta office, and we routinely schedule jobs in Georgetown, Dunwoody Club Forest, and Wynterhall within two to three business days. Call (678) 679-7540 for a written estimate before any work starts.
We’ve been working in Dunwoody long enough to know what the housing stock actually looks like beneath the floorboards and above the ceiling drywall. The 1970s and 1980s construction that dominates this market carries specific ductwork vulnerabilities you won’t find in newer suburbs, and our pricing reflects actual conditions, not a one-size-fits-all coupon.
Why CleanRun Air Duct Cleaning Alpharetta Is Dunwoody’s Preferred Duct Repair & Sealing Company
Our reputation in Dunwoody was built on documentation, not door-knocking. Since 2013, we’ve served 52,000+ homes with a written price before every job and a photo record of every duct run afterward. Dunwoody homeowners specifically ask to see the inside of their return chases before they agree to scope, and we deliver those images as standard.
We don’t publish review counts or star ratings we can’t verify on request. What we can show you: every Dunwoody job file includes dated before-and-after photos, the written scope signed before work began, and the 365-Day Done Right Promise backed in writing under Haven Standard Clause 1. Our technicians are background-checked and uniformed under Haven Standard Clause 3: Verified Crews, and they’re identified by name before arrival.
Response time to Dunwoody runs two to three business days for standard scheduling. Dispatch and scheduling are coordinated from our Atlanta office; crews serve Dunwoody locally. We know the difference between a Georgetown colonial with three air handlers and a Dunwoody Club Forest split-level with unlined wall-cavity returns, and we quote accordingly.
Our Duct Repair & Sealing Services in Dunwoody
Duct Sealing
Duct sealing in Dunwoody addresses the conditioned air you’re paying to cool that leaks into attic space before it reaches your registers. In the 130°F+ attic heat common to Dunwoody summers, every cubic foot of cooled air lost to a gap at the plenum or a disconnected flex collar is air your compressor works harder to replace. We seal with mastic at metal joints and mechanical collars at flex connections, then verify with pressure testing. A typical duct sealing job on a single air handler in Dunwoody runs $450-$780.
Flex Duct Repair
Flex duct in Dunwoody’s 40- to 50-year-old homes has often been crushed by storage activity in attics, degraded by attic heat cycling, or torn by rodent activity in the mature tree canopy surrounding properties near Dunwoody Nature Center. We replace damaged flex runs with new R-8 insulated flex, properly supported to prevent sagging that creates low points where condensation pools. Flex duct repair on a single run in Dunwoody typically runs $280-$520; full replacement of all flex on one air handler runs $680-$1,100.
Metal Duct Repair
Metal ductwork in Dunwoody’s original construction was often lined with fiberglass insulation on the interior surface. After four decades of 130°F+ attic heat and humidity cycling, that liner delaminates. The glass fibers migrate downstream to coat your blower motor and clog your evaporator coil. No amount of mastic on the exterior joints fixes a failing interior surface. We repair accessible metal sections or line them with closed-cell insulation where the original liner has failed. Metal duct repair or sectional replacement in Dunwoody runs $580-$1,200 per air handler depending on accessibility and extent.
Duct Insulation
Dunwoody’s humid subtropical climate means condensation control is as important as air retention. Poorly insulated flex or metal in a ventilated attic drips moisture onto ceiling drywall during summer operation. We install proper R-8 insulation on new flex runs and closed-cell liner on metal where the original fiberglass has degraded. Duct insulation work in Dunwoody typically runs $380-$720 per air handler.
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.
Before
AfterTrusted Brands We Service in Dunwoody
Our equipment roster includes professional-grade tools from Honeywell, Aprilaire, and Abatement Technologies - brands you can look up independently before agreeing to any scope. We stock common fittings and sealants for Dunwoody jobs to avoid supply-house delays, and our crews carry Guardsman protective materials for work in finished spaces. The equipment matters because the documentation matters: a Rotobrush camera head gives us the resolution to show you the actual condition inside your wall-cavity returns, not a blurry guess.
Common Duct Repair & Sealing Problems We See in Dunwoody Homes
- Unlined wall-cavity return chases in 1970s split-levels. Technicians working the Georgetown and Dunwoody Club Drive corridors consistently find that split-level homes from the mid-1970s have return-air chases framed directly into wall cavities without a sealed metal liner. Those walls have been acting as unfiltered return ducts for decades, pulling in insulation fibers, rodent debris, and settled dust that no filter ever captured. A standard register-and-grille cleaning misses the largest debris reservoir in the house entirely.
- Delaminating fiberglass liner in original metal ducts. Forty-year-old fiberglass-lined metal ducts under Dunwoody’s 130°F+ attic heat see interior surfaces fail. The liner releases glass fiber downstream to the blower motor. Mastic on the joints doesn’t touch this problem. Camera inspection reveals the actual condition.
- Post-renovation contamination in Dunwoody’s active remodel market. The high-end renovation wave that has swept Dunwoody since the 2010s means frequent drywall dust and construction debris pushed into existing duct systems. Homeowners seal supply and return ducts with plastic during work, pressure-balance goes sideways, and unsealed joints in original flex soak up debris the moment the plastic comes off.
- Multiple-system pressure imbalance in larger Dunwoody homes. When one of three air handlers in a Georgetown colonial pulls through unsealed flex runs, the other two mask the leak until the system with the worst ducts starts short-cycling. Per-system sealing and pressure verification prevents this masked-failure scenario.
Pricing for Duct Repair & Sealing in Dunwoody, GA
We publish actual ranges because Haven Standard Clause 1 requires a written price before any work starts. Here’s what duct repair and sealing costs in Dunwoody’s market:
| Service | Typical Range in Dunwoody |
|---|---|
| Duct sealing, single air handler | $450 - $780 |
| Flex duct repair, single run | $280 - $520 |
| Full flex replacement, one air handler | $680 - $1,100 |
| Metal duct repair/sectional replacement | $580 - $1,200 |
| Duct insulation, single air handler | $380 - $720 |
| Wall-cavity return chase lining and sealing | $720 - $1,400 |
Homes with multiple air handlers - common in Dunwoody’s larger Georgetown and Wynterhall properties - receive per-system pricing, not a multiplied flat rate. Each system is scoped, photographed, and quoted separately. The total reflects actual conditions, not a guess from the driveway.
Factors that move Dunwoody jobs within these ranges: attic accessibility (truss spacing, decking presence), extent of original liner degradation, number of flex runs requiring replacement, and whether wall-cavity returns need metal lining. We deliver the written price before any panel comes off. Bring a competitor’s written estimate; we provide a Free Second Opinion at no cost.
We Also Serve Cities Near Dunwoody
Our crews work throughout north metro Atlanta, including Duct Repair & Sealing in Dunwoody and surrounding communities: Alpharetta, Roswell, Johns Creek, and Milton. Each market receives the same documented approach - written price first, photo record last - with pricing adjusted to local housing stock and labor conditions.
Serving Dunwoody, GA - Our Local Coverage Area
We’re based in the Dunwoody 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 - Duct Repair & Sealing in Dunwoody
Yes, if you have multiple systems, each requires separate evaluation and sealing. Most larger Dunwoody homes in Georgetown and Wynterhall were built with two or three air handlers, and leakage in one system is often masked by the others until the affected unit starts short-cycling or failing to hold temperature. We scope and quote each air handler individually so you know which system actually needs work. Call (678) 679-7540 for a written estimate on each system - estimates are free.
Your return-air chase may be framed into the wall cavity without a sealed metal liner, a condition our techs regularly find in mid-1970s split-levels along Dunwoody Club Drive and surrounding corridors. The wall cavity itself becomes the duct, and over decades it fills with insulation debris, rodent activity, and settled dust that restricts airflow. Standard register cleaning doesn’t reach this reservoir. We verify with camera inspection and line the chase with metal where needed. Call (678) 679-7540 to schedule a camera inspection.
You should receive three concrete deliverables: a written scope signed before work began, dated before-and-after photos from inside every duct run, and the 365-Day Done Right Promise in writing. CleanRun has delivered this documentation on every job since 2013. The photo record is your verification that work occurred in the ducts you cannot access yourself, not a verbal assurance. We deliver these as standard, not upon request.
Yes. Dunwoody’s protected mature-tree ordinances preserve one of metro Atlanta’s densest oak and pine canopies, and spring pollen loads here rival or exceed neighboring Sandy Springs or Brookhaven. Unsealed return systems pull that pollen into ductwork where it accumulates with humidity-driven microbial growth. Sealed returns and properly filtered chase linings reduce this infiltration measurably. We factor local pollen loading into our sealing recommendations for Dunwoody properties. Call (678) 679-7540 for a scope that addresses your specific tree exposure.
Sealing alone cannot remove established mold colonization. If flex duct interior surfaces show active mold growth - common in Dunwoody’s humid summers when condensation forms in poorly insulated or sagging flex - the affected material typically requires replacement, not sealing. We verify with camera inspection and replace contaminated flex with new R-8 insulated runs, then seal connections to prevent re-infiltration of humid attic air. Call (678) 679-7540 for camera inspection and written scope.
Schedule Your Duct Repair & Sealing in Dunwoody
Call (678) 679-7540 to speak with a live person and schedule your free estimate. We’ll deliver a written price before any work starts, document every duct run with before-and-after photos, and back the work with our 365-Day Done Right Promise. Tomas Reyes and the team at CleanRun Air Duct Cleaning Alpharetta have served this market since 2013 with one approach: show the homeowner what we found, quote the actual scope, and prove the work with photographs.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Alpharetta, serving Dunwoody since 2013.
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