How to stop AC leak mold from returning permanently?« Back to Previous Page

The black speckles are likely mold, and wiping with bleach only removes surface discoloration without addressing the root cause. The recurring dampness from the AC leak provides the moisture mold needs to regrow.

Start by fixing the source of the moisture. For a leak, the AC drain line is the most common culprit, often clogged with algae or dust. A technician should clear the line and ensure the condensate pan is draining properly. In Dubai's high humidity, units must work harder, leading to more condensation, so this maintenance is critical.

Once the leak is fixed, the affected wall area must be properly remediated. If the drywall or insulation behind it is damp, it will need to be opened, dried, and treated. Simply painting over it or surface cleaning will not work. The mold-infested material may need to be removed and replaced if the damage is extensive.

To prevent recurrence, ensure the closet has adequate air circulation; a louvered door can help. Consider having a professional apply a antimicrobial coating to the area after remediation to inhibit future growth. For a persistent or large problem (over a few square feet), a professional inspection is recommended to assess the wall cavity and confirm the mold type, as some species require specific treatment protocols.