How to remove and prevent AC mold on walls?« Back to Previous Page

The black spots are likely mold caused by the AC condensation leak combined with Dubai's high humidity. First, fix the AC leak—this is the primary source of moisture. A qualified HVAC technician should check the drain line for blockages and the drip pan for cracks.

To clean the wall, wear an N95 mask and gloves. For small areas, scrub with a mixture of detergent and water. Avoid bleach as it doesn't prevent regrowth. After cleaning, the area must be dried completely with a fan. If the mold has penetrated porous surfaces like drywall, the affected section may need to be cut out and replaced.

Preventing its return requires controlling humidity. Ensure your AC is correctly sized and functioning to effectively dehumidify the space. Using a dedicated dehumidifier in the room, especially during the more humid months, can significantly help. Improve air circulation by occasionally opening windows when outdoor humidity is lower and regularly inspecting for any new condensation or leaks.

For recurring or widespread mold, a professional inspection is recommended to identify all moisture sources and assess the extent. In such cases, lab testing can determine the mold species, which guides the appropriate remediation protocol.