How to fix AC leak and mold in Jumeirah Park bedroom?« Back to Previous Page

The AC unit in our master bedroom in Jumeirah Park seems to be leaking a bit of water onto the carpet, and I just spotted a few small black patches forming on the back of the wall near the vent. The room has felt more humid than usual for the last couple of weeks, even with the AC running constantly. What's the best way to treat this mold and fix the AC issue for good to stop it from coming back?
Posted by Long Vu
Asked on April 1, 2026 1:50 pm
That black growth near the AC vent is a common issue in Dubai, especially when a unit leaks. The high humidity and constant cooling create perfect conditions for mold. The most critical step is fixing the AC leak first; otherwise, any mold treatment will fail as the moisture source remains.

The leak is likely due to a clogged condensate drain line, a very frequent problem here from dust and microbial growth inside the duct. A full AC service should clear the drain line, check the drain pan, and ensure the unit is draining properly. For the mold, avoid DIY bleach sprays as they only remove surface discoloration and can worsen indoor air quality. The small visible patch often indicates more growth inside the wall cavity or the AC unit itself.

Given the location in a bedroom and the persistent humidity you describe, a professional inspection is strongly recommended. They can identify the exact mold type and the full extent of the contamination, which is often hidden. Remediation involves containing the area, HEPA vacuuming the affected wall, and using specialized antimicrobials. For a permanent fix, the AC system may need a thorough internal cleaning to remove any mold in the ducts and coils, preventing spores from being blown back into the room. After fixing the leak and removing the mold, using a dehumidifier can help maintain stable humidity levels and prevent recurrence.
Posted by Sani Admin
Answered on April 2, 2026 5:41 pm