Black mold in closet from AC in Dubai apartment?« Back to Previous Page

Black speckling and damp smells in a Jumeirah Village Triangle closet are classic signs of a condensation-related mold issue, extremely common here due to our high humidity and constant AC use. The AC unit itself is likely the source of the moisture, not necessarily contaminated.

Your first step is to address the immediate problem. For a small area, wear an N95 mask and gloves. Mix a solution of one part white vinegar to four parts water and scrub the affected wall. Do not use bleach, as it only removes the color and can push spores deeper into porous surfaces. Discard any items that are heavily contaminated or cannot be thoroughly cleaned. Increase air circulation in the closet immediately; a small desiccant dehumidifier or fan can help dry it out completely.

To prevent recurrence, you must control the humidity. The closet's back wall is likely a cold surface where moist room air condenses. Ensure the closet doors are left ajar to allow conditioned air to circulate. Check that the AC drain line is not clogged and the unit is draining properly—a common issue. Keep the AC running consistently, even when you're out, to maintain a stable, low humidity level indoors, ideally between 45-55%.

Given the speed of spread you describe, this indicates a persistent moisture source. For a definitive answer, a professional inspection can identify if the AC system itself is spreading spores or if there's a hidden leak in the wall. A lab test can confirm the mold type, which is advised if occupants experience respiratory issues. DIY methods often fail long-term without correcting the underlying humidity imbalance caused by the climate and AC operation.