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

The dampness and black spots indicate a condensation and mold issue common in Dubai's humid climate. Permanently stopping it requires addressing both moisture control and existing contamination.

First, reduce the humidity that allows mold to grow. Ensure your AC is set to an appropriate temperature—typically 22-24°C—as excessively cold settings cause more condensation. Run the AC's dry mode function regularly, if available, to remove ambient moisture. Improve air circulation behind furniture by pulling items a few inches away from walls; stagnant air is a primary culprit. Using a dehumidifier in the most affected rooms, especially during humid months, can help measurably reduce moisture levels.

The black spots suggest active mold growth that needs to be addressed. For small, visible areas, clean with a detergent solution. However, mold behind walls or deep within the AC unit itself often requires professional remediation. The AC drain line might be clogged or the insulation around the cooling coils degraded, both of which cause excess moisture.

For a permanent solution, a two-step approach is most effective. A certified mold inspection can identify the exact moisture source and extent of contamination, often using lab analysis to determine the species. Remediation then involves professionally cleaning the AC air handling unit, ductwork, and treating affected surfaces with antimicrobial solutions to prevent regrowth. Simply cleaning the visible spots without fixing the underlying moisture problem will result in it returning.

In Dubai, landlords are generally responsible for maintaining the building's structure and central AC systems under Law No. 26 of 2007. If the issue is linked to a building-level fault, such as leaking pipes or inadequate insulation, you should notify your property manager in writing.