How to fix AC leak and prevent mold in Dubai?« Back to Previous Page

The issue you're describing is a common and serious problem in Dubai's climate, where year-round AC use combined with high ambient humidity creates perfect conditions for mold growth. The black speckled patch is almost certainly active microbial growth, fueled by the constant moisture from the condensate leak.

The solution is a two-part process: mechanical repair and microbial remediation. First, the AC leak must be addressed at its source. This is typically caused by a blocked condensate drain line, a damaged drain pan, or insufficient insulation on the cold refrigerant lines, leading to excessive condensation. A certified HVAC technician should be engaged to clear the line, check the pump (if present), and ensure the system is draining properly. Simply wiping the wall is insufficient, as mold roots (hyphae) penetrate porous materials like drywall.

For the affected wall, the damp section of drywall and insulation must be professionally inspected. In many cases, the moisture has wicked up behind the wall surface, causing a larger infestation than is visible. The affected material often requires controlled removal, followed by application of EPA-approved antimicrobial agents to eliminate any residual spores. Given the health risks associated with mold exposure and the strict indoor air quality standards expected in Dubai properties, a professional assessment is strongly recommended.

For a certified inspection and a permanent remediation solution that complies with local regulations, I advise you to contact our specialists at Saniservice. Call 800-MOLDS (800-66537) or email hello@saniservice.com to schedule a diagnostic visit. Delaying treatment will only allow the problem to escalate.