How to clean mold from AC and prevent its return?« Back to Previous Page

Your symptoms and the visible speckles strongly suggest microbial growth within the AC system, a common issue in Marina's high-humidity environment where condensation constantly feeds mold in ducts and drip pans.

For a proper clean, start by turning the AC off. Remove the vent grilles and wash them with a mild detergent. Wipe visible mold from around the opening with a microfiber cloth dampened with a solution of white vinegar or a dedicated HVAC coil cleaner, never bleach. Never attempt to clean deep inside the ducts yourself, as this can dislodge spores and contaminate your entire apartment.

Prevention is more critical than the cleaning itself. The musty smell indicates a deeper issue, likely a clogged condensate drain line or a dirty evaporator coil—both require a professional HVAC technician to address. To prevent recurrence, ensure your AC unit is serviced at least twice a year. A proper service includes cleaning the evaporator and condenser coils, flushing the condensate drain line with an algaeecide, and checking the drain pan. Consistently running your AC on "auto" instead of "fan on" mode helps reduce humidity buildup inside the unit when it's not cooling. Using a dehumidifier in conjunction with your AC can also help maintain indoor humidity below 50%, making the environment far less hospitable for mold.

Given the scratchy throat and visible growth, a professional inspection is strongly advised to assess the extent of the contamination inside the ductwork, which is not a DIY task. In Dubai, providers with their own microbiology lab can offer culture testing to identify the specific species, which informs the correct remediation protocol.