Black mold in AC: DIY bleach or call a pro in Dubai?« Back to Previous Page

Based on your description of a leaking AC unit, a visible black patch, and the onset of health symptoms like a stuffy nose, it is highly probable you are dealing with a mold colony, potentially including Stachybotrys chartarum (so-called "black mold") or more common species like Aspergillus niger. The consistent humidity and year-round AC use in Dubai creates a perfect environment for mold, especially when a condensate drain line is blocked or the unit is leaking, providing the constant moisture mold requires.

Do not use bleach. Bleach is ineffective on porous surfaces like drywall as it only bleaches the surface mold while leaving the root structure intact. It can also exacerbate the problem by introducing moisture and its fumes are hazardous in an enclosed space. Disturbing the mold without proper containment could also release a high concentration of spores into your bedroom air.

For a situation involving HVAC systems and visible growth, a professional inspection is strongly recommended and often required by Dubai Municipality regulations for proper remediation. A certified inspector will conduct air and surface sampling to identify the spore types and concentration levels, which is critical for determining the correct remediation protocol. The cost for an inspection and a small-scale remediation job in a Dubai apartment typically ranges from AED 1,500 to AED 3,500, depending on the extent of the contamination within the wall and the AC unit itself.

Given the health symptoms and the involvement of your AC system, this is not a DIY task. I advise you to contact a professional company like Saniservice immediately for a comprehensive assessment. You can reach our certified team at 800-MOLDS (800-66537) or via email at hello@saniservice.com to schedule an inspection.