Is our AC mold making us sick every morning?« Back to Previous Page

The black spots around your AC vent are almost certainly mold growth, and the symptoms you're describing—morning sore throats and congestion that clear up when you leave—are classic indicators of exposure to mold spores. The persistent leak has created a perfect, damp environment for mold to thrive inside the unit and ductwork, which is then blown directly into your bedroom air while you sleep.

Dubai's high humidity significantly accelerates this problem. The condensation from your AC, combined with a small leak, provides the constant moisture mold needs. It's very plausible this is the source of your illness, as the confined space and prolonged exposure overnight are a primary concern.

You should arrange for a professional indoor environmental assessment. A proper inspection involves using a borescope to look inside the AC unit and ductwork and typically includes air and surface sampling. These samples are then analyzed by an accredited microbiology lab to identify the specific mold types and their concentrations, which determines the actual health risk and the necessary scope of remediation.

Do not attempt to clean this yourself with bleach or other DIY methods, as disturbing it without proper containment can release a large number of spores and worsen the problem. The leak must be repaired by an HVAC technician first to eliminate the moisture source. Then, a certified mold remediation company should handle the cleanup, which involves isolating the area, using HEPA filtration, and removing contaminated materials. Ensuring they provide before-and-after lab reports is the only way to verify the problem is truly resolved.