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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Before
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Before
AfterFast, Reliable Duct Repair & Sealing Across Smyrna
Duct repair and sealing in Smyrna typically costs $280-$650 for most residential jobs, with full-system flex duct replacement running $1,200-$2,400 depending on crawl-space accessibility. Our crews serve Smyrna from our Atlanta office, and we schedule most repair visits within 48 hours. Call (678) 679-7540 for a written estimate before any work begins.
We’ve worked the crawl spaces beneath Smyrna’s ranch and split-level homes since 2013. The neighborhoods off Atlanta Road, the streets near King Springs Elementary, and the older blocks of Smyrna Heights all share the same problem: ductwork installed between the 1960s and 1980s, suspended in damp, unconditioned space over Georgia red clay. That specific combination creates failure modes you won’t find in newer construction. Our Duct Repair & Sealing team documents every run with before-and-after photos, and every job starts with a written price under Haven Standard Clause 1.
Why CleanRun Air Duct Cleaning Alpharetta Is Smyrna’s Preferred Duct Repair & Sealing Company
We’ve completed repairs in more than 600 Smyrna homes, and the photo records from those jobs tell a consistent story. Clay dust infiltration, shifted crawl-space boots, and rodent-damaged flex runs show up in roughly three out of four calls from the 30080 ZIP code. Smyrna homeowners leave reviews mentioning the same thing: they chose us because we showed them the problem before proposing a fix.
Our response time to Smyrna averages 36 hours for non-urgent repairs, and we carry common flex duct sizes, mastic sealant, and boot collars on every truck. That matters on streets like Oakdale Road or the older sections of Cooper Lake Road, where a crushed or disconnected run can mean the air handler is pulling crawl-space air for weeks before anyone notices.
Haven Standard Clause 3, Verified Crews, means every technician is background-checked, uniformed, and identified by name before arrival. Tomas Reyes established that protocol in 2013, and it hasn’t changed. The 365-Day Done Right Promise applies to every Smyrna job in writing, not as a verbal assurance.
Our Duct Repair & Sealing Services in Smyrna
Flex Duct Repair
Smyrna’s crawl-space flex duct takes abuse that attic-mounted systems never see. Moisture from the ground degrades the insulation jacket. Rodents enter through gaps around shifting boots and nest in the soft interior. We’ve replaced crushed flex runs in homes near King Springs where the original duct had sunk into red clay silt and was pulling that material straight into the air handler. Our repair includes re-suspending the run off the damp ground, sealing all boot connections with mastic, and documenting the new placement with photos.
Duct Sealing
Leakage in Smyrna homes rarely shows as obvious tears. More often, it’s the slow separation of duct sections at the plenum (the central distribution box, usually at the air handler) or gaps where boots have shifted on settling clay. A typical Smyrna ranch loses 20-30% of conditioned air to the crawl space through these gaps. We seal with mastic sealant, a thick, fiber-reinforced compound that remains flexible after curing, and we pressure-test the system to verify the reduction in leakage. The photo record shows every sealed joint.
Metal Duct Repair
Some Smyrna homes, particularly the split-levels built in the 1970s, used galvanized sheetmetal trunk lines with flex branch runs. The metal corrodes where condensation collects at low points, especially in crawl spaces with poor vapor barriers. We patch or replace corroded sections, re-insulate with proper R-value wrap, and seal all connections. Metal repair runs $340-$580 in most Smyrna homes, depending on access.
Duct Insulation
Uninsulated or degraded duct insulation in a Smyrna crawl space means the 55°F air from your air handler warms to 72°F before it reaches the register. We install foil-faced fiberglass insulation rated for damp locations, sealed at all seams, and we pay particular attention to the plenum and first few feet of trunk line where condensation risk is highest.
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 Smyrna
Our trucks carry professional-grade equipment from Nikro, Honeywell, and Abatement Technologies. Nikro HEPA-filtered negative-air machines handle source removal in contaminated runs. Honeywell media filters and Aprilaire whole-house systems address the pollen load that drives Smyrna’s seasonal maintenance cycle. We stock common boot sizes and mastic compounds locally, so most Smyrna repairs don’t wait on parts.
Common Duct Repair & Sealing Problems We See in Smyrna Homes
- Shifted crawl-space boots on settling clay. The duct boot (the angled fitting that connects the floor register to the horizontal duct) sits on a metal support or block that sinks unevenly into Georgia red clay. The gap that opens around the boot collar becomes a mouse highway and a clay dust intake. We find this on roughly half our Smyrna calls.
- Buried or crushed flex runs.
- Mold colonization on duct jackets. Smyrna’s summer dew points above 70°F mean any surface below that temperature accumulates moisture. Crawl-space ductwork runs at 55°F during cooling season. The fiberglass insulation jacket, once the vapor barrier is compromised, becomes a mold substrate. We see this even on ducts with no visible tears, especially on north-facing crawl-space walls where sun never reaches.
- Disconnected returns pulling crawl-space air. In older Smyrna ranches, the return duct often runs through the crawl space as a simple flex or sheetmetal trunk. If a connection separates at a wye or plenum, the air handler pulls unfiltered, humid, possibly rodent-contaminated air from under the house. The homeowner’s first clue is often a spike in allergy symptoms or a persistent musty odor that air fresheners can’t mask.
Original flex duct in 1960s-1980s Smyrna homes was often strung too low or supported with inadequate hangers. Decades of sagging put the duct in contact with the ground, where it fills with silt, collapses under its own weight when wet, or gets crushed by routine crawl-space traffic. The homeowner notices weak airflow or a musty smell; the camera shows a duct half-full of red clay.
Pricing for Duct Repair & Sealing in Smyrna, GA
We publish ranges because Haven Standard Clause 1 requires a written price before any work starts. Here is what duct repair and sealing costs in Smyrna’s market:
| Service | Typical Range |
|---|---|
| Single boot reseal and support repair | $280-$380 |
| Flex duct section replacement (one run, crawl space) | $340-$520 |
| Multi-run flex repair with mastic sealing | $580-$920 |
| Metal duct patch or section replacement | $340-$580 |
| Full-system duct sealing (mastic, all accessible joints) | $720-$1,200 |
| Complete flex duct replacement, typical Smyrna ranch | $1,200-$2,400 |
Three factors move Smyrna jobs within these ranges: crawl-space headroom (less than 18 inches adds labor), the extent of rodent damage requiring source removal before repair, and whether the plenum itself needs resealing or replacement. Every estimate is free, delivered in writing, and valid for 30 days. Bring a competitor’s written quote and we’ll provide a Free Second Opinion, our number next to theirs.
We Also Serve Cities Near Smyrna
Our crews work Smyrna regularly and also handle duct repair and sealing in Marietta, Kennesaw, Roswell, and Decatur. Each market has different housing stock and different typical failure modes; we adjust our equipment load and pricing expectations accordingly. The documented photo record and written upfront pricing apply everywhere we work.
Serving Smyrna, GA - Our Local Coverage Area
We’re based in the Smyrna 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 Smyrna
Every 3-4 years for most Smyrna crawl-space systems, and every 2-3 years if you have no whole-house media filter or if someone in the home has pollen-sensitive allergies. The metro Atlanta pollen load, combined with clay dust infiltration through shifted boots, loads these systems faster than attic-duct homes in Roswell or Kennesaw. Call (678) 679-7540 and we’ll inspect your runs with a camera to give you a specific interval based on what we find.
The smell is mold or mildew growing on the duct jacket or inside compromised flex runs, activated by summer humidity when dew points stay above 70°F for weeks at a time. In Smyrna’s crawl spaces, the temperature differential between 55°F duct surface and 75°F humid ambient air creates condensation that doesn’t occur in drier seasons. We locate the colonization with camera inspection, remove contaminated material with HEPA-filtered negative-pressure extraction, and seal or replace the affected runs.
Sealing alone won’t stop pollen; you need filtration at the air handler and tight return ductwork so the system pulls air through the filter, not through gaps in the crawl space. In many Smyrna homes, we find that the return side is leakier than the supply, which means pollen-laden crawl-space air bypasses the filter entirely. We assess both sides and give you a written scope that addresses the actual leakage pattern.
Look for droppings near floor registers, especially in older ranch homes near South Cobb Drive or Atlanta Road where crawl-space boots have shifted over decades. You may also hear scratching in walls or notice a sudden, persistent odor that changes with HVAC operation. Our camera inspection confirms entry points, typically chewed boot collars or gaps where flex meets the plenum. We seal with mastic and metal flashing, not spray foam, because rodents chew through foam.
Yes, if your symptoms are triggered by crawl-space contaminants - mold spores, rodent debris, or red clay dust - entering through damaged or leaky ductwork. We’ve had Smyrna homeowners report reduced symptoms within a week of sealing disconnected returns and replacing mold-colonized flex. The repair eliminates the source; a properly sealed system then lets your filtration do its job. Call (678) 679-7540 for a camera inspection and written estimate.
Ready to see what’s actually in your ductwork? Call (678) 679-7540 for a free estimate. We’ll run a camera through your crawl-space runs, show you the photo record, and deliver a written price before any work starts. Every job is backed by the 365-Day Done Right Promise and the full H.A.V.E.N. Standard.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Alpharetta, serving Smyrna since 2013.