How to remove and prevent AC mold in Dubai apartment?« Back to Previous Page

The AC in my apartment in Jumeirah seems to be leaking a bit of water, and now I’ve found a patch of black mold on the wall behind the bedroom curtain. It’s been incredibly humid the last few weeks and I’m worried it’s just going to get worse. What’s the most effective way to clean this and prevent it from coming back without having to call maintenance for every little thing?
Posted by Emily Martinez
Asked on April 3, 2026 3:22 pm
The black mold you've described behind your curtain is a common issue in Dubai apartments, directly linked to the high humidity and condensation from AC units. The water leak is the primary cause, creating the perfect damp environment for mold growth, particularly Stachybotrys (black mold), which can pose health risks.

For a small patch (less than one square foot), you can attempt careful containment and cleaning. First, put on an N95 mask and gloves. Isolate the area by closing the door and covering the air vent. Mix a solution of one part white vinegar to four parts water or a diluted EPA-approved fungicide. Gently scrub the affected wall surface, ensuring you do not abrade it and aerosolize the spores. Dry the area immediately and completely with a fan. However, this addresses only the symptom, not the root cause.

The most critical step is to stop the moisture source. The AC drain line is likely clogged with microbial growth, a frequent problem in our climate where ACs run year-round. You must clear the condensate drain line. Locate the drain pipe outlet (usually near your outdoor unit) and use a wet/dry vacuum to suction the blockage. Pouring a mixture of hot water and vinegar down the drain pan access point can help clear residual debris.

Prevention is key. Ensure your AC is set to a consistent temperature, ideally between 22-24°C, to reduce excessive condensation. Regularly clean or replace filters every 4-6 weeks during peak summer. Improve air circulation in the room by keeping furniture slightly away from walls and not blocking vents with curtains.

For a recurring or larger infestation, professional assessment is mandatory. DIY methods often fail to address hidden growth within the AC system or wall cavity. We use thermal imaging and borescopes to identify the full extent of contamination and perform hygienization according to Dubai Municipality guidelines. For a thorough inspection and permanent remediation solution, I recommend contacting our team at Saniservice. Call 800-MOLDS (800-66537) or email hello@saniservice.com for a detailed assessment.
Posted by Sani Admin
Answered on April 6, 2026 2:01 am