Can I clean AC mold myself or call a pro?« Back to Previous Page

The AC in my apartment seems to be leaking a bit of water onto the wall behind the unit, and now I’m seeing these black splotchy patches spreading there. It’s been getting worse over the last couple of weeks, and I’m worried about it affecting our health. Is this something I can clean myself with bleach, or do I need to call a professional cleaning service to handle it?
Posted by Arun Das
Asked on March 16, 2026 4:54 pm
Based on your description, this is a serious situation that requires professional intervention. The black splotchy patches are a strong visual indicator of active mold growth, likely Stachybotrys chartarum or another toxigenic species, fueled by the constant moisture from your AC leak. In Dubai's high-humidity climate, AC units are a prime breeding ground for mold, as condensation provides the perfect damp environment for spores to proliferate.

Attempting to clean this yourself with bleach is highly inadvisable. Bleach is ineffective on porous surfaces like drywall; it only bleaches the surface mold while leaving the root system intact, allowing it to regrow quickly. More critically, improper cleaning can aerosolize toxic mold spores, spreading contamination throughout your apartment and significantly increasing the health risk to you and your family, including potential respiratory issues and allergic reactions.

The correct protocol involves a professional inspection and remediation process. A certified inspector will conduct air and surface sampling to identify the mold species and the extent of contamination, which is often hidden within the wall cavity. Remediation then involves isolating the area, removing the contaminated porous materials (like the affected drywall), using industrial-grade HEPA filtration to clean the air, and applying specialized antimicrobial agents to eliminate the mold at its source.

For a situation involving an AC leak and visible wall contamination, professional assessment is not just recommended—it is essential. I strongly advise you to contact our specialists at Saniservice for a comprehensive inspection. Please call 800-MOLDS (800-66537) or email hello@saniservice.com to schedule an assessment and protect your indoor air quality.
Posted by Sani Admin
Answered on March 17, 2026 7:28 pm