How to permanently fix AC mold in humid weather?« Back to Previous Page

The AC unit in our Jumeirah villa has been leaking a bit, and now I’ve found black spots of mold starting to spread on the wall behind the bedroom wardrobe. We had a company come to clean it last year, but it’s clearly come back. What’s the most effective way to treat this and prevent it from returning for good, especially with our humid weather?
Posted by Miguel Wojcik
Asked on May 12, 2026 4:05 pm
The recurring mold indicates the underlying moisture issue wasn't resolved. In Dubai's climate, simply cleaning visible mold is a temporary fix. The high humidity and constant AC use create ideal conditions for rapid regrowth if the source isn't addressed.

Effective treatment requires a multi-step approach. First, a professional inspection is crucial to identify the AC leak's exact source—often a clogged drain line or faulty condensate pump. The mold behind the wardrobe suggests the leak is inside the wall cavity, which requires careful remediation to prevent spore dispersal. The wall may need to be opened to properly dry the structure and treat all affected areas with antimicrobial solutions.

For permanent prevention, focus on moisture control. Ensure the AC unit is serviced bi-annually to keep drain lines clear and drip pans clean. Consider installing a condensate pan tablet to inhibit microbial growth. After remediation, improve air circulation behind the wardrobe and monitor indoor humidity levels, ideally keeping them below 60%. For severe or recurring cases, a company with a microbiology lab can identify the specific mold type and provide a targeted, verifiable remediation report to ensure it's resolved.
Posted by Sani Admin
Answered on May 13, 2026 7:06 pm