Mold from AC leak causing illness: DIY or professional?« Back to Previous Page

Given your symptoms and the duration of the leak, this is almost certainly a professional job. The black spots you see are just the surface growth; the real concern is the hidden mold inside your wall cavity, feeding on the damp drywall and insulation. Bleach only removes surface discoloration and is ineffective on porous materials.

The persistent stuffy nose and dry cough you both have are classic indicators of prolonged exposure to mold spores and mycotoxins in your indoor air. In Dubai’s climate, with high humidity and year-round AC use, this creates a perfect environment for mold to thrive, and an AC leak provides the constant moisture source it needs.

A proper remediation involves more than just wiping the wall. It requires isolating the area, removing and disposing of the contaminated building materials (drywall, insulation), HEPA vacuuming, and treating the cavity with antimicrobial solutions to prevent regrowth. Crucially, the source of the AC leak must be identified and repaired; otherwise, the problem will recur.

For a case like this, a professional inspection with proper testing is advised to understand the full extent. Reputable companies in the UAE should provide a detailed scope of work and, upon completion, verification that spore counts have returned to normal indoor levels. This is not a DIY situation given the health implications and potential for structural damage.