HVAC & Air Duct Mold Removal in McDonough, GA

Signs to look for

• A mildew smell that fills a room shortly after the AC starts
• Black dots or fuzz around ceiling diffusers or floor registers
• The emergency float switch shutting the system down
• Rust or slime in the drain pan
• Duct wrap in the attic or crawl space that is damp or discolored

Local conditions in McDonough

McDonough, the Henry County seat about 25 miles southeast of Atlanta, grew up around its 1823 town square and now stretches along I-75 and US 23. Homes range from older houses near the historic district to newer subdivisions, and in both the indoor unit and ducts often sit in an attic or crawl space. Muggy summer air moving across cold ductwork leaves condensation behind, and a drain line that slowly fills with algae can push water back into the pan until it overflows.

The city's Building & Inspection Division, part of Community & Economic Development at 136 Keys Ferry Street, issues building, electrical, plumbing and HVAC permits and enforces the International Property Maintenance Code; its inspection line is 678-782-6217. Replacing an air handler or major duct runs inside city limits will likely need an HVAC permit, so ask the contractor to pull it. The city's Code Compliance Division takes concerns through a Report a Concern link. For health questions, Henry County Health Department environmental health is at 137 Henry Parkway in McDonough.

What affects the cost

Angi's Atlanta cost guide lists HVAC system mold remediation at $3,522 to $11,740; HomeGuide's 2026 national range for HVAC systems or ducts is $2,000 to $10,000. Key factors:

• How far the growth extends through the duct system
• Duct material, since fiberglass duct board gets replaced instead of cleaned
• Repairs to the coil, blower or drain
• Permit and inspection steps for equipment replacement

What happens when you call

You will be connected with an independent local mold remediation company. They will ask where the unit sits, what you have noticed and whether the AC is running. A visit typically includes the air handler, coil, pan, drain and reachable duct runs, followed by a written scope. Georgia has no state mold license or certification, so ask about training and experience with HVAC jobs, and check any contractor license on GOALS Verify Now.