How to clean and prevent mold in humid apartment?« Back to Previous Page

Black specks near AC vents in a humid Sharjah flat are a common sign of a condensation and mould issue. The dampness suggests your AC drain line may be clogged or the unit's insulation is failing, causing water to accumulate—a perfect environment for mould.

For cleaning, first identify the extent. If it's a small, surface-level area (less than one square meter), you can carefully clean it yourself. Wear an N95 mask, gloves, and safety glasses. Use a microfibre cloth with a solution of diluted white vinegar or a dedicated mould-cleaning detergent. Never use bleach, as it only discolours the surface and doesn't kill the root structure. Dry the area thoroughly immediately after.

However, moving furniture revealed this, which often means the problem has been growing unseen. The wall cavity behind could be affected. For anything beyond a very small, superficial patch, a professional inspection is strongly advised to assess the full scope and avoid spreading spores during cleaning.

Prevention is critical in our climate. Your most effective daily habit is to ensure your AC unit is set to a consistent temperature, even when you're out, to avoid constant cycles of cooling and warming that create condensation. Using a dehumidifier in the bedroom, especially during the more humid night hours, can help reduce ambient moisture.

Ultimately, the root cause is likely the AC unit itself. Have a licensed technician service it to clear the drain pan and drain line, check the refrigerant levels, and ensure it's operating efficiently to remove humidity properly. This is the single most effective long-term prevention step.