AC leak causing black spots and health issues?« Back to Previous Page

Yes, that combination of a persistent AC leak and black spots is almost certainly a mold issue, and your symptoms are very consistent with mold exposure. Dubai's high humidity and constant AC use create perfect conditions for mold growth when a leak provides the moisture.

The black spots are likely Cladosporium or Stachybotrys (black mold), both common here from chronic water intrusion. A stuffy nose and persistent headache upon waking are classic signs of inhaling mold spores circulating from the AC system and colonizing the damp closet area. The leak has been feeding the growth for months.

Immediate steps: First, have a certified technician repair the AC leak at the source—this is the critical first step. Do not attempt to clean the black spots yourself with bleach, as this can aerosolize toxic spores. For a small area, a solution of white vinegar can help surface-clean, but proper remediation is needed for porous materials like drywall or wood.

Given the duration of the leak and your health symptoms, a professional inspection is strongly advised. They will identify the full extent of the hidden growth, often inside walls or AC ducts, and perform air and surface sampling. This is sent to a microbiology lab (like ours) to identify the species and spore count, which dictates the remediation protocol. In Dubai, this is a common issue we see in apartments, and proper identification is key to resolving it safely.