AC mold and cough: DIY bleach or call professional?« Back to Previous Page

The AC in my apartment seems to be constantly leaking, and I’ve just found a patch of black, fuzzy mold on the wall behind our bedroom wardrobe. We’ve lived here for 2 years and just noticed it while deep cleaning, and my husband has had a persistent cough for the last month. Should I just scrub this myself with bleach or is this serious enough that we need to call a professional mold remediation company?
Posted by Thanh Zhao
Asked on March 30, 2026 11:50 pm
The persistent cough and visible mold growth behind the wardrobe indicate a situation that requires professional assessment, not a DIY bleach solution. In Dubai's humid climate, AC condensation leaks are a primary cause of hidden mold, and the black patch you see is likely just the surface manifestation of a larger problem inside the wall cavity. Bleach only removes surface discoloration and does not address the root moisture issue or kill the mold's root structure (hyphae), allowing it to quickly return.

For health concerns like a persistent cough, identifying the mold species is critical. Some types, like Aspergillus, are common here and can exacerbate respiratory issues. Scrubbing it yourself can aerosolize spores, potentially worsening your husband's symptoms. Dubai Municipality guidelines for healthy buildings recommend addressing underlying dampness and ensuring proper indoor air quality, which a professional approach achieves.

A certified inspector will use moisture meters to find the leak's source and the full extent of growth, then provide a protocol for safe containment and removal to prevent cross-contamination. Remediation involves fixing the AC leak, removing affected materials, and HEPA vacuuming followed by antimicrobial treatment. For verifiable results, the process should conclude with post-remediation testing to confirm the air and surfaces are back to a healthy baseline. This comprehensive approach is the only way to resolve both the moisture problem and the health risk.
Posted by Sani Admin
Answered on April 2, 2026 2:35 pm