HVAC & Air Duct Mold Removal in Marietta, GA

Why do older Marietta homes get mold in the ductwork?

Marietta, the Cobb County seat about 17 miles northwest of downtown Atlanta, is built around Marietta Square and has six historic districts, including Whitlock Avenue, Church-Cherokee Streets and Northwest Marietta. Older houses in those areas were designed before central air, so ducts were later run through crawl spaces and attics where summer air is hot and wet. Uninsulated or loosely joined ducts sweat in that air, and the moisture collects in wrap and on nearby wood. Creeks add to the picture: in the September 2009 floods, National Weather Service gauges listed at Marietta showed Sope Creek cresting at 18.35 feet and Sewell Mill Creek at 13.26 feet, both against 12-foot flood stages. A crawl space that took on water can leave ducts soaked.

What will removal cost?

Angi's Atlanta cost guide reports HVAC system mold remediation at $3,522 to $11,740. Jobs in older homes can run higher when ducts are hard to reach or need replacing. Duct board and lined duct, which EPA says cannot be effectively cleaned once moldy, cost more to deal with than bare metal. The coil, blower and pan, containment and any wall or ceiling repair round out the bill.

Who inspects the work, and how do I check the company?

The City of Marietta Building Inspection Division inspects and enforces the Georgia State Minimum Standard Codes for new and existing construction, remodels, plumbing and HVAC work; ask the city about permits before ducts or equipment are replaced. Georgia has no state mold license or certification, and DPH says mold work has no enforceable state or federal standards. For rebuild work, ask whether the company holds a Georgia residential or general contractor license and check it on the Secretary of State's GOALS Verify Now lookup.

A note for Marietta renters

Cobb & Douglas Public Health says tenants with mold from a mechanical or structural failure in an apartment, such as a leaking AC, may contact the local building inspections department, which may be able to address the moisture problem. Put repair requests in writing and keep copies. This is general information, not legal advice.