How to permanently stop AC water leak and black mold?« Back to Previous Page

The issue you're describing in Mirdif is a classic symptom of a failing AC condensate management system, exacerbated by Dubai's high ambient humidity. The black spots are almost certainly mold growth, fueled by the constant moisture from the leak and the organic material in the wall's plaster and paint.

The only permanent solution requires a systematic approach. First, the root cause—the AC leak—must be addressed by a certified HVAC technician. This typically involves unclogging the condensate drain line, ensuring the drain pan is properly sloped and not cracked, and verifying the unit's insulation is intact to prevent condensation on cold surfaces.

Once the leak is permanently stopped, the mold must be professionally remediated. Simply wiping it is insufficient, as the fungal roots (hyphae) penetrate porous surfaces like drywall. The affected section of the wall needs to be assessed. If the moisture penetration is deep, the drywall may require cutting out and replacement. For surface-level growth, a certified remediation expert will use EPA-approved, UAE-approved biocides to kill the mold at its root, followed by sanding and sealing the area with anti-microbial primers to prevent recurrence. This process also controls airborne spores, which is critical for health.

Given the humidity, a standalone dehumidifier in the room during the upcoming humid season is a highly recommended secondary control measure. For a proper assessment and a guaranteed permanent solution, I strongly recommend a professional inspection. Our team at Saniservice can diagnose the AC issue, perform the mold remediation to Dubai Municipality standards, and provide a hygienization certificate for your peace of mind. Call us at 800-MOLDS (800-66537) or email hello@saniservice.com to schedule an inspection.