How to treat and prevent closet mold from AC leak?« Back to Previous Page

Based on the symptoms you've described—persistent damp smell and visible black spots on the lower shelves—this is a classic case of mold growth secondary to an AC condensate leak. The initial drying was likely insufficient, allowing moisture to wick into the porous building materials, creating a persistent reservoir for mold.

The most effective treatment requires a systematic approach. First, the affected area must be isolated to prevent cross-contamination. All stored items, especially the porous textiles like winter clothes and blankets, should be removed and professionally cleaned or hygienized. The visible mold on the wall surface should be carefully removed using EPA-approved fungicidal cleaners by a trained technician. Crucially, the wall itself must be inspected with a moisture meter. Given the history of a leak, it is highly probable that moisture has penetrated the drywall or plaster. If the moisture reading is high, the affected section of the wall must be opened, and the cavity thoroughly dried and treated. Simply cleaning the surface will guarantee a recurrence.

To prevent this from happening again, the root cause must be addressed. The AC drain line and drip pan must be inspected, cleaned, and tested to ensure they are functioning correctly and are not blocked—a common issue in Dubai due to dust and calcification. For long-term prevention in our humid climate, I recommend increasing ventilation in the closet. Leave the door ajar periodically and consider installing a small, battery-operated dehumidifier or a passive ventilation grill.

Due to the health risks of improper handling and the high likelihood of hidden moisture, a professional inspection is strongly advised. Our certified team at Saniservice uses thermal imaging and moisture meters to accurately assess the full extent of the damage. We can then execute a complete remediation following Dubai Municipality guidelines. For a definitive solution, please call us at 800-MOLDS (800-66537) or email hello@saniservice.com for a consultation.