In Dunwoody, HVAC mold usually starts with condensate that is not draining, a wet coil or ducts that sweat in attics and crawl spaces. Removal means stopping that moisture and cleaning or replacing the affected components. Call the number on this page to be connected with a local mold remediation company in Dunwoody.
About Dunwoody
Dunwoody, about 14 miles north of downtown Atlanta, began developing in the 1960s with subdivisions such as Georgetown, where single-family homes went up alongside apartments. Today it combines a historic village core, an edge-city job center around Perimeter Mall and mostly suburban neighborhoods. Houses from that era often have newer equipment connected to older ducts in crawl spaces and attics. A replacement unit sized differently from the original, or ducts with joints that have loosened over decades, can leave cold metal sweating in humid air and rooms that never fully dry out. Apartments around Perimeter Center more often have a closet unit whose drain line is the weak point.
What to do now
- Turn off the system if you can. EPA advises against running one you know or suspect is contaminated.
- Look under the indoor unit for standing water, rust or a tripped float switch.
- Check that the condensate line outlet drips during cooling.
- Photograph growth on grilles, the cabinet and visible ducts.
- Run a dehumidifier to hold humidity below 60 percent.
- Renters: report the leak to the landlord in writing and keep a copy.
Signs and likely causes
| What you see | Likely cause |
|---|---|
| Wet carpet beside the AC closet | Clogged drain or pan overflow |
| Spots on a bedroom ceiling diffuser | Condensation at the register or a leaky boot |
| Musty odor every time the fan starts | Growth on the coil or blower wheel |
| Damp duct wrap in the crawl space | Ducts sweating in humid air |
| Rooms that stay sticky at a low setting | Oversized unit that does not run long enough to dry the air |
Cost factors
Angi's Atlanta cost guide reports HVAC system mold remediation at $3,522 to $11,740, and HomeGuide's 2026 national range for HVAC or ducts is $2,000 to $10,000. Duct type is the biggest swing: bare metal can often be cleaned, while EPA says moldy fiberglass duct board or lined duct should be replaced. Duct length, access, containment and any equipment repair add to it. If walls or ceilings are opened, Dunwoody Community Development's Permits and Inspections staff can say whether a permit is needed (permits@dunwoodyga.gov, 678-382-6821).
For renters, Dunwoody's tenant resources page lists mold itself as a non-enforceable code violation, but interior water leaks, roof disrepair and broken gutters are enforceable. A leaking AC drain is a leak, so Code Enforcement's Compliance Hotline, 678-382-6890, is a reasonable call.
HVAC & Air Duct Mold Removal questions in Dunwoody
My landlord won't fix the leaking AC. What can I do?
Can I keep running the AC while I wait for someone to look at the mold?
What does HVAC mold remediation cost around Atlanta?
Can I clean mold off the vent registers myself?
More mold services in Dunwoody
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