Is AC mold causing our illness in Dubai villa?« Back to Previous Page

The AC in our master bedroom in our Jumeirah villa has been leaking a bit, and now I've found black spots along the wall behind the curtain. My husband has had a constant stuffy nose and a weird cough for the past three weeks, and I'm starting to get headaches. **Could this mold be the cause of our symptoms, and what's the first thing we should do besides just cleaning the visible spots?**
Posted by Marco Kowalski
Asked on April 6, 2026 11:00 pm
It's very possible the mold from your AC leak is contributing to your symptoms. The constant humidity and condensation from Dubai's climate create an ideal environment for mold growth, and the types commonly found in AC systems (like Cladosporium) are known irritants. A persistent cough, congestion, and headaches are classic reactions to mold exposure, especially in a confined space like a bedroom.

The first step is to stop the moisture source. Have an HVAC technician repair the AC leak immediately; this is non-negotiable. Simply wiping the visible black spots is insufficient, as the hidden mold colony inside the AC unit and possibly inside the wall cavity is likely much larger and is the primary source of the spores you're breathing.

For a situation with active symptoms, a professional inspection is strongly advised. They will use moisture meters and borescopes to assess the wall cavity and the AC unit's interior evaporator coil, which is a common mold reservoir. In Dubai, remediation must follow standards like the DM Guidelines or NIOSH to ensure spores aren't spread throughout your home during cleanup.

Verification is key. The only way to confirm the mold type and its potential for producing mycotoxins is through a lab analysis of a sample. This provides a clear target for the remediation strategy and peace of mind. Until it's handled, consider using a dehumidifier in the room and keeping the bedroom door closed to limit spore circulation to other parts of the house.
Posted by Sani Admin
Answered on April 8, 2026 7:44 pm