Is AC mold causing my kids' constant cough?« Back to Previous Page

It is very possible. The symptoms you describe -- persistent cough, dusty smell, and visible black specks around the vent -- are classic indicators of a contaminated AC system. In Dubai's climate, where ACs run almost continuously, the combination of humidity inside the ducts and fine dust from outside creates an ideal environment for mold and bacterial growth. When the unit turns on, it can blast these contaminants into your living space.

For a situation involving children's health, a professional inspection is the necessary first step. Do not attempt to clean the visible substance yourself, as this can disturb and spread spores. A reputable indoor environmental professional will conduct a thorough assessment, which should include taking surface and air samples. These samples are then cultured in a microbiology lab to identify the specific type of mold present and its concentration, which determines the appropriate remediation method.

The cleaning process itself is intensive. A proper duct cleaning involves using specialized HEPA-filtered vacuum equipment to remove debris from the entire system, not just the visible vents. The interior of the AC unit and evaporator coils must also be cleaned with EPA-approved biocides. The most critical step is asking for verifiable proof of the results, such as before-and-after lab reports showing a reduction in microbial counts. This lab-based approach ensures the problem is solved, not just covered up.