How to stop AC mold in my Dubai apartment?« Back to Previous Page

The AC in my bedroom seems to be constantly damp around the vents, and I've just spotted small black speckles on the wall behind my wardrobe. We've been running the AC 24/7 to cope with the heat, but the room still feels weirdly humid. What's the most effective way to stop this mold from spreading in a Dubai apartment?
Posted by Antonio Wisniewski
Asked on March 30, 2026 7:35 am
Constant AC use in Dubai's climate creates condensation, which is the primary cause of that dampness and mold. The most effective strategy is controlling moisture, not just cleaning the visible spots.

First, address the humidity. Ensure your AC unit is set to a temperature that effectively dehumidifies the air; 22-24°C is often a sufficient range. Running the AC on 'auto' mode instead of 'continuous fan' allows the coils to properly cool and drain, preventing excess moisture from being blown back into the room. Use exhaust fans in the kitchen and bathroom for at least 30 minutes after generating steam. For severe humidity issues, a standalone dehumidifier can help significantly.

Second, improve ventilation. Turn the AC off and open windows for at least 30-60 minutes daily when the outside humidity is lowest, typically in the afternoon. This allows stagnant, moist air to escape. Ensure no furniture is blocking the AC vents, as this can cause cold air to trap moisture against walls, exactly like behind your wardrobe.

For the existing mold, a solution of white vinegar or a dedicated mold remover can clean small surface areas on non-porous surfaces. However, the speckles on the wall and dampness around the vents suggest a deeper issue within the AC unit or building envelope. The internal drip pan or ducts may be clogged, leading to continuous moisture problems.

For a recurring issue like this, a professional inspection is recommended to identify the core moisture source. They can assess the AC's drainage system, check for insulation issues in the walls, and perform air or surface sampling to identify the mold type. Verifiable lab results from this process are crucial for determining the appropriate remediation steps.
Posted by Sani Admin
Answered on April 1, 2026 1:04 pm