Black mold from AC leak: clean myself or call management?« Back to Previous Page

Black mold from an AC leak should be addressed immediately, but your approach depends on the extent. A small patch (under one square foot) on a non-porous surface can sometimes be handled with care. For anything larger, or if it’s on drywall, a professional inspection is strongly advised due to potential health risks and hidden spread.

In Dubai’s high humidity, the wall will not dry on its own, making the leak the primary issue. Your first call should be to building management. Dubai Law and the DHA mandate landlords to provide habitable premises, which includes fixing AC leaks that cause mold. They are responsible for repairing the leak source. Document the issue with photos and a written request to create a paper trail.

For a very small area, you can clean it wearing an N95 mask and gloves. Use a mixture of detergent and water, not bleach, as bleach does not kill the mold roots and can worsen indoor air quality. However, this only addresses the visible growth. The constant moisture from the leak means it will return quickly.

The underlying problem is the persistent dampness, which is common here with year-round AC use causing condensation. Even after the leak is fixed, the wall cavity likely has hidden moisture and mold that requires professional-grade drying and antimicrobial treatment to prevent regrowth and protect indoor air quality. A certified mold inspector can use moisture meters and thermal cameras to assess the full damage, often finding it is more extensive than it appears.