How to permanently remove AC mold in a Dubai apartment?« Back to Previous Page

The AC in my Dubai Hills apartment has been leaking a bit, and now I’m seeing these small black spots in the corner of my master bedroom closet on the outside wall. I wiped them away with vinegar, but they came back within a couple of weeks. What’s the most effective long-term solution to kill this mold for good and stop it from returning in our humid climate?
Posted by Hannah Wilson
Asked on March 31, 2026 10:15 pm
The black spots returning after cleaning indicate an active moisture source, which in Dubai is often AC-related condensation or a leak. The most effective long-term solution requires a two-step approach: permanently stopping the water intrusion and then properly remediating the existing mold.

First, address the moisture. Your AC unit's condensate drain line is a common culprit for leaks and should be inspected for a clog or disconnection. This is a frequent issue in Dubai's climate where ACs run constantly. For leaks from the wall or window, the building's facility management should be contacted, as this falls under common area maintenance in most Dubai apartments. They are responsible for sealing external cracks to prevent humid air from condensing on cool interior walls.

Second, the mold itself must be removed correctly. Vinegar or DIY solutions often only bleach the surface, leaving the root structure intact. For a recurring problem, the affected drywall or material may need to be cut out and replaced if the growth is within the wall cavity. Scrubbing visible growth with a HEPA vacuum and antimicrobial agents is the standard, but it must be thorough.

Given the humidity and the fact it has returned, a professional inspection is advisable to identify the exact moisture source and the extent of the growth, which can be hidden. They can perform a moisture mapping assessment and, if needed, air or surface sampling to identify the spore types. The key to permanent removal is verifying the moisture source is fixed and that remediation is completed to a verifiable standard, not just a surface clean.
Posted by Sani Admin
Answered on April 3, 2026 1:21 pm