Could black mold in AC be causing our persistent cough?« Back to Previous Page

Yes, black mold in or around an AC unit can absolutely be the cause of persistent coughing, especially in children. The damp, dark environment of an AC system is a prime breeding ground for mold, and spores are then blown directly into your living space.

In Dubai's climate, this is a common issue. The combination of high outdoor humidity and cold AC surfaces creates significant condensation, which provides the constant moisture mold needs to grow. The heavy rain you mentioned likely increased ambient moisture, potentially overwhelming your AC's drainage or seeping into walls, kickstarting the growth you're now seeing.

The black spots along the baseboard are a major red flag, strongly suggesting a moisture problem from either a drainage leak from the AC unit or water intrusion from the recent weather. A proper inspection is crucial to identify the source. Do not attempt to clean it yourself, as disturbing it will release a large number of spores and can exacerbate health issues.

You need a professional mold inspection that includes three key elements: a visual assessment to find all growth and the moisture source, air quality testing to measure spore levels in the bedroom's air, and surface sampling of the black spots. The surface sample must be analyzed by a microbiology lab to accurately identify the mold species, as some types are more strongly linked to respiratory irritation than others. This lab-confirmed diagnosis is the only way to know for certain if the mold present is the cause of your family's symptoms and to guide an effective remediation plan.