Black mold in AC causing sickness; how to clean safely in Dubai?« Back to Previous Page

Black spots around an AC vent with a damp smell and accompanying respiratory symptoms strongly suggest a mould issue, which is common here due to high humidity and year-round AC use causing condensation. Your husband's persistent cough and your headaches are typical reactions to mould exposure.

The safest first step is a professional inspection. Do not attempt to clean visible mould yourself, as improper cleaning can aerosolize spores and worsen contamination. In Dubai, look for a company that provides a verifiable diagnosis, not just a cleaning service. A legitimate inspector will use a borescope to examine the internal AC ducts and evaporator coil—the most common source—and should recommend air or surface sampling to be analysed by an accredited microbiology lab. This identifies the mould type and concentration, which dictates the correct remediation protocol.

For cleaning, ensure any company follows NADCA standards and uses HEPA-filtered vacuum equipment to contain spores. They should treat the source—not just spray a fragrance—and provide documented before-and-after proof of contamination removal. To avoid scams, any provider should be able to explain their process clearly and show third-party lab results; if they can't, your skepticism is warranted. Post-remediation, maintaining low indoor humidity (below 60%) and ensuring your AC unit is regularly serviced to prevent condensation buildup are key to preventing recurrence.