HVAC & Air Duct Mold Removal in Roswell, GA

Why do older Roswell homes have trouble with duct mold?

Roswell, about 20 miles north of downtown Atlanta, has a National Register Historic District with antebellum homes such as Barrington Hall and Bulloch Hall, plus the old Roswell Mill on Vickery Creek. Historic and older houses were not designed around central air, so ducts were added wherever they fit, often through crawl spaces and attics that stay humid all summer. Uninsulated or poorly sealed runs in those spaces sweat, and gaps in return ducts can pull damp air into the system. Neighborhoods near the Chattahoochee, Vickery Creek and Big Creek also live with plenty of moisture in the air on summer mornings.

What will HVAC mold removal cost?

Angi's Atlanta cost guide reports HVAC system mold remediation at $3,522 to $11,740, and HomeGuide's 2026 national range for HVAC systems or ducts is $2,000 to $10,000. Older homes can land higher when ducts are hard to reach or have been patched together over the years. Replacing fiberglass duct board, which EPA says cannot be effectively cleaned once moldy, costs more than cleaning metal duct. Ask each company to separate the cost of cleaning, replacement and fixing the moisture source so you can compare bids.

Do I need a permit for this work?

Cleaning mold off equipment and ducts is not usually treated as permitted work, but replacing equipment or rebuilding ceilings and walls can be. The City of Roswell's Building Division in Community Development handles permits, plan review and inspections, and applications go through the Roswell Permitting and Licensing HUB. Homes in the historic district may face more steps for exterior changes, so ask early. For the rebuild portion, check that the company holds a Georgia residential or general contractor license on the Secretary of State's GOALS Verify Now lookup.

A note for Roswell renters

Roswell Code Enforcement runs a multi-family inspection program, but the city says complaints about conditions inside rental units are usually civil landlord-tenant matters and points tenants to the Georgia Landlord Tenant Handbook. Georgia Legal Aid says landlords must keep heating systems running and repair included air conditioning; ask for repairs in writing. This is general information, not legal advice.