Can mold from AC leak cause illness and how to clean?« Back to Previous Page

Yes, the mould from your AC leak can definitely be causing your wife's symptoms. The constant moisture from the drip creates an ideal environment for mould growth, and the spores are then circulated by the AC unit. Waking up with a stuffy nose and sore throat are classic signs of exposure to mould in a sleeping environment.

For a small area on a painted wall, you can clean it yourself with caution. First, fix the AC leak—this is the most critical step to prevent immediate regrowth. Then, mix a solution of one part white vinegar with four parts water. Wear an N95 mask, gloves, and safety glasses. Gently scrub the area with a soft brush or cloth, being careful not to oversaturate the wall or spread the spores. Do not use bleach, as it only removes the colour and can release harmful fumes, especially in a closed space.

However, given the symptoms and the fact the mould is hidden behind a curtain (suggesting it may be more widespread inside the wall cavity), a professional inspection is strongly recommended. In Dubai's humid climate, water damage behind walls can lead to extensive, unseen colonization. A proper assessment, often including moisture meters and borescope cameras, can determine the full extent. Remediation for larger issues involves containment, HEPA filtration, and antimicrobial treatment to ensure spores are not spread throughout your home during cleaning.