How to clean AC and treat wall mold in Dubai?« Back to Previous Page

For the AC unit, start by turning it off and replacing the air filter with a new one rated MERV 8 or higher. Clean the accessible interior components, like the evaporator coils and drain pan, with a coil cleaner and a biocide specifically labeled for HVAC use to address microbial growth. Ensure the condensate drain line is flushed with a vinegar solution to clear blockages causing stagnant water.

For the wall, move the curtain and furniture to expose the area. Scrub the black spots with a mixture of water and detergent. After it dries, apply a dedicated mold-inhibiting primer, then repaint. Simply painting over it will not stop the regrowth.

In Dubai's constant high humidity, this is often a condensation issue. The wall behind the curtain is likely a cold spot where moisture condenses, creating a perfect environment for mold. To prevent recurrence, improve air circulation by periodically opening curtains and using a dehumidifier. Running the AC’s dry mode function can also help reduce indoor humidity levels.

For a persistent damp smell or if the mold returns quickly, the growth is likely more extensive inside the ductwork or AC unit, which requires professional disassembly. A company with microbiological lab capabilities can take swab samples to identify the mold type and provide a verifiable post-remediation report, which is often needed for landlords.