Black mold from AC leak: DIY or professional cleanup?« Back to Previous Page

The black speckles from an AC leak are almost certainly mold, and the itchy throat confirms it's affecting your indoor air quality. In Dubai's high humidity, what you see on the surface is often just the visible portion of a larger colony growing inside the wall cavity.

For a small patch (under one square foot), a DIY approach with a detergent solution (not just bleach, which only removes surface color) can be attempted. However, given the location behind a wardrobe, the leak has created a damp, dark environment ideal for hidden growth. Disturbing it without proper containment risks spreading spores throughout the room.

Professional remediation is strongly recommended here. They will move the wardrobe, set up containment barriers, use HEPA filtration to capture airborne spores, and apply specialized antimicrobial agents to treat the wall cavity. The most critical step is fixing the AC leak first; otherwise, the mold will return regardless of how well you clean.

In many cases, a lab analysis is prudent to identify the mold species, as this determines the necessary remediation protocol. For persistent issues linked to an AC unit, a full system hygienization is often needed to address contamination in the ducts and evaporator coils.