AC leak causing black mold in bedroom: how to fix?« Back to Previous Page

Stop the AC unit immediately to prevent further water damage. The black spots are almost certainly mold, thriving on the constant moisture from the leak in Dubai's high humidity.

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 baseboard and carpet. Do not use bleach, as it only removes the color and can push spores deeper. Dry the area completely with fans after cleaning. However, if the mold has spread into the drywall or carpet backing, or covers more than a square foot, professional remediation is needed to properly remove it and prevent spores from spreading to other rooms.

The root cause is the AC leak, which must be fixed by a certified HVAC technician. In Dubai, these units often clog from dust or have damaged drain pans. A licensed technician will clear the condensate drain line, check the drain pan, and ensure the unit is levelled correctly to prevent future leaks. For a permanent fix, hire a Dubai Municipality-approved HVAC company. They can also assess if the unit's capacity is sufficient for the room's size, a common issue here.

Given the visible spread you describe, a professional inspection is wise to confirm the mold type and ensure it hasn't colonized inside the wall cavity. Companies with their own microbiology labs can provide definitive identification and clearance testing after remediation.