AC Mold Causing Our Cough? First Step to Fix?« Back to Previous Page

Yes, a leaking AC unit causing black speckles on the vent is a classic source of mold exposure, and the resulting persistent dry cough is a very common symptom, especially at night when you're in that room for hours. The combination of condensation from the leak and Dubai's high humidity creates a perfect environment for mold to thrive inside the unit and ductwork, which then gets blown into your bedroom.

The first and most critical step is to stop using that AC unit immediately to prevent further inhalation of spores. You should then arrange for a professional indoor health inspection. In serious cases with visible growth and health symptoms, a visual check isn't enough; the inspector should use a borescope to look inside the ductwork and take air or swab samples for a microbiology lab to identify the mold type and concentration. This evidence-based approach is what the Dubai Municipality's public health guidelines are based on.

While you wait for inspection, increase ventilation in the room by opening windows if the outside air quality permits. Do not attempt to clean the vent yourself with bleach, as this can agitate the spores and make the air quality worse temporarily. The remediation process will involve repairing the leak to eliminate the moisture source, followed by a thorough cleaning of the entire AC system and affected areas like the carpet to ensure the problem is resolved at its root.