Is my AC mold causing health problems?« Back to Previous Page

The black fuzzy patches are very likely mold, and your symptoms are a common reaction. Dubai's high humidity, combined with a small, persistent AC leak, creates the perfect damp environment for mold growth. The fact your symptoms improve when you leave the apartment strongly suggests an indoor air quality issue originating from that source.

While not all mold is highly toxic, the types that grow in damp indoor environments—like the common Cladosporium or Aspergillus often found here—are known to cause the exact upper respiratory irritation you're describing: congestion, coughing, and worsened allergy symptoms, especially upon waking.

For a situation involving visible growth and active leakage, a professional inspection is strongly recommended. They can identify the mold species and the full extent of the problem, which often spreads inside the wall cavity. In Dubai, remediation should follow standards like the NADCA ACR guidelines to ensure it's properly contained and removed, not just superficially cleaned.

Until it's addressed, increase ventilation in the room as much as possible and consider using a dehumidifier. The root cause, the leaking AC unit, must be repaired by an HVAC technician to prevent immediate recurrence after any cleanup. A company with its own microbiology lab can provide the necessary before-and-after testing to confirm the environment has been returned to a healthy state.