How to treat AC mold and stop the leak?« Back to Previous Page

That black spot pattern is classic for an AC leak, and the persistent damp smell confirms the mold is active beneath the surface. The high humidity in Dubai provides a constant source of moisture, allowing it to thrive.

To treat it properly, start by fixing the source. The leak is likely due to a clogged condensate drain line, which is extremely common here from dust and microbial growth. A technician needs to clear the line and ensure the drain pan is functioning. For the mold, wiping visible spots with a microfiber cloth and a solution of diluted white vinegar can help on non-porous surfaces. However, because the water has soaked into your carpet and potentially the wall, surface cleaning won't remove the root colony. The carpet padding underneath is almost certainly contaminated and acts as a reservoir, releasing spores and that musty odor.

For a proper remediation, the affected section of carpet and padding must be removed and discarded. The subfloor and wall should be professionally cleaned and dried. Given the extent you're describing, a professional inspection is recommended to assess the full scope. They can use moisture meters to find all damp areas and recommend the correct antimicrobial treatment for the construction materials. Simply spraying a bleach solution is ineffective and can worsen indoor air quality.

To prevent recurrence, ensure your AC unit is serviced at least annually, specifically asking for the condensate drain line to be vacuumed and flushed. Keeping the apartment's humidity below 60% with a dehumidifier can also significantly slow mold regrowth.