AC Leaking Water and Black Mold: Professional Cleaning and Fix?« Back to Previous Page

The AC in my apartment seems to be constantly leaking water into the closet where the unit is, and now I’m seeing these black, powdery spots spreading on the wall behind the drip tray. It’s in our master bedroom and I’m worried it’s making us sick with the humidity. What’s the best way to get this professionally cleaned and what can I do to stop the condensation from happening again?
Posted by Jennifer Smith
Asked on May 10, 2026 11:27 pm
The black, powdery spots are likely mold growth, a common issue in Dubai due to high humidity and AC condensation. The constant water leak creates the damp environment mold needs to thrive.

For professional cleaning, start with a certified mold inspection. This identifies the species and the extent of the problem, as some molds require specific remediation protocols. A proper remediation team will contain the area to prevent spores spreading, remove the contaminated materials (like the affected drywall), and use HEPA-filtered equipment to clean the air. They should provide a clearance test, often from an independent lab, to confirm the space is safe.

To stop the condensation, the root cause must be fixed. The most common reasons for an AC leak are a clogged condensate drain line, a damaged or misaligned drip pan, or low refrigerant levels causing the evaporator coil to freeze and then thaw excessively. A licensed HVAC technician should inspect the unit, clear the drain line with a vacuum, and ensure the system is operating correctly.

To prevent recurrence, ensure the closet has adequate ventilation and that the AC unit receives regular professional maintenance, including cleaning the drain line, which is a standard part of most annual service contracts in the UAE.
Posted by Sani Admin
Answered on May 11, 2026 3:08 am