HVAC & Air Duct Mold Removal in Rex, GA

How does mold get into an AC system in Rex?

Rex sits in eastern Clayton County, about 13 miles from Atlanta, with a historic village center around the Rex Mill. Older homes near the village and newer houses on the surrounding roads both rely on central air for much of the year. Every hour the AC runs, the coil pulls water out of the indoor air. That water should drip into a pan and leave through a drain line. When the pan rusts, the line clogs with slime, or a duct running through a damp crawl space starts to sweat, moisture stays put and mold follows. Clayton County was also among the counties under a state of emergency during the September 2009 floods, and any home where water reached the ducts or unit then deserves a closer look now if it was never fully addressed.

What gets cleaned and what gets replaced?

Hard sheet metal ducts with visible growth can often be cleaned; EPA's duct guidance says cleaning may be worth considering in that case. Fiberglass duct board and ducts lined with fiberglass are another matter. EPA says when they are wet or moldy they cannot be effectively cleaned and should be removed and replaced. The coil and pan are cleaned, the drain is cleared, and wet insulation around the unit is usually bagged out. Any coating a company wants to apply afterward should be named and explained.

Who do I call about permits and leaks in Rex?

Rex is unincorporated, so building permits for addresses in unincorporated Clayton County come from Clayton County Community & Economic Development in the P.K. Dixon Building in Jonesboro, which runs an online permit and inspection portal. Ask your contractor whether replacing equipment or duct runs needs one. Renters with an unrepaired leak can contact Clayton County Code Enforcement at 678-610-4755 or through Click Clayton; the county says it does not handle mold itself, but plumbing problems and leaks may fall under its property maintenance work.

A short local note

Angi's Atlanta cost guide lists 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. Georgia has no state mold license, so ask about training and, for rebuilding, check the contractor on GOALS Verify Now.