Black mold from AC leak: DIY clean or call pro?« Back to Previous Page

Our AC in the master bedroom has been leaking a bit, and now I’m seeing some black spots spreading on the wall behind the wardrobe. We’ve lived here for 2 years and just noticed it when I was cleaning. Is this something I can clean with bleach myself, or do I need to call a professional company to handle it?
Posted by Rashid Haddad
Asked on March 31, 2026 11:23 am
Based on the symptoms you've described—black spots spreading on the wall behind a wardrobe due to an AC leak—this is a situation that warrants immediate professional attention. The persistent humidity and year-round reliance on AC systems in Dubai creates a perfect environment for mold growth, particularly Stachybotrys chartarum (black mold), which thrives on the cellulose in drywall when it becomes chronically damp.

While a small, surface-level spot might be addressed with a bleach solution, your case has several red flags. The mold is spreading, indicating an active moisture source from the AC leak that has likely saturated the wall cavity behind the surface. Bleach is ineffective on porous materials like drywall and plaster; it only bleaches the surface mold while leaving the root structure intact. More critically, disturbing the mold during DIY cleaning can aerosolize harmful spores, significantly increasing the risk of respiratory issues and allergic reactions for your household.

In the UAE, proper mold remediation is not just about cleaning; it involves a rigorous process of containment, air filtration, removal of contaminated porous materials (like the affected drywall), and addressing the root moisture problem—in this case, repairing the AC leak. A certified professional inspection is crucial to assess the full extent of the hidden damage and to perform air quality testing.

For a comprehensive inspection and a scientifically backed remediation plan, I strongly recommend contacting our specialists at Saniservice. Call 800-MOLDS (800-66537) or email hello@saniservice.com. Our team is equipped to safely resolve the issue, prevent recurrence, and ensure your indoor environment is returned to a healthy state.
Posted by Sani Admin
Answered on April 1, 2026 2:22 pm