How to stop closet mold and moisture from AC vent?« Back to Previous Page

Your closet's black spots are likely mold growth caused by condensation from the AC vent, a very common issue in Dubai's humid climate. The cool air from the vent is hitting the warmer interior wall, causing moisture to condense and create a damp environment where mold thrives.

For immediate action, move and carefully clean the affected leather items with a dedicated leather cleaner. Wipe down all interior closet surfaces with a solution of white vinegar or a detergent to remove surface mold. However, this only addresses the symptom, not the source.

The core issue is the temperature differential and humidity. To stop the moisture, first ensure your AC is not set to an excessively low temperature, as a larger gap between the indoor and outdoor humidity increases condensation risk. Run a dehumidifier in the bedroom for a few days to dry the area out completely. Crucially, inspect the AC vent; the drain line might be partially clogged or the insulation around the ductwork inside the void could be deficient, causing excess condensation to drip.

For a permanent solution, this typically requires a professional assessment. A certified inspector can use a thermal imaging camera to pinpoint the exact source of the condensation—whether it's an under-insulated duct, a blocked drain pan, or negative air pressure pulling humid air into the space. Remediation often involves sealing and insulating the ductwork around the vent. Since this mold is originating from your AC system, a comprehensive duct cleaning and coil sanitization by a company with verifiable before-and-after testing may be necessary to prevent recurrence and stop spores from being distributed throughout your home.