Black mold in AC closet: DIY or professional removal?« Back to Previous Page

Based on the description of your situation—a long-term AC leak leading to black mold growth on a wall within a villa in Mirdif—this is unequivocally a case that requires professional assessment and remediation, not a DIY attempt.

The black discoloration strongly suggests the presence of Stachybotrys chartarum or another toxigenic species, which poses significant health risks, particularly respiratory issues and allergic reactions. The UAE's high humidity and year-round AC use create a perfect environment for such growth, especially when a moisture source like a leak is present. Attempting to clean this with bleach is ineffective and hazardous. Bleach only removes surface discoloration on porous materials like drywall; it does not kill the mold roots (hyphae) growing within the material. Furthermore, improper cleaning will aerosolize the spores, spreading the contamination throughout your home and HVAC system, drastically increasing exposure and the scope of the problem.

A professional company like Saniservice follows a strict protocol: first, identifying and rectifying the moisture source (the AC leak) to prevent recurrence. Then, the contaminated porous materials (the affected drywall and possibly insulation) must be carefully removed and disposed of under containment to prevent cross-contamination. The area is then HEPA-vacuumed and treated with professional-grade antimicrobial agents. Finally, post-remediation verification (PRV) testing is conducted to confirm the spore count has returned to acceptable, background levels.

For a small room or closet, the cost for a complete remediation and PRV can range from AED 1,500 to AED 4,000, depending on the extent of the damage behind the wall. Given the health risks to your family and the potential for the problem to be more widespread, a professional inspection is critical. I strongly recommend you call our experts at 800-MOLDS (800-66537) or email hello@saniservice.com for a detailed assessment and quotation.