AC unit dripping and black spots on ceiling?« Back to Previous Page

The black spots are likely mold growth caused by the condensation drip from your AC unit. In Dubai's high humidity, this is a common issue, especially when an AC drain line is clogged or the unit's insulation is failing, allowing cold surfaces to condense moisture.

For your safety, do not attempt to clean it yourself with bleach or other household cleaners. Disturbing the mold can release spores into the air. A professional inspection is needed to identify the mold species and the exact cause of the water leak. The underlying condensation issue must be fixed first; otherwise, the mold will return quickly after cleaning.

The repair requires an HVAC technician to clear the clogged drain line, check the drain pan, and ensure proper insulation. For the mold remediation, call a company that uses containment procedures to prevent cross-contamination and can provide before-and-after lab testing to verify the spore count has been reduced to a safe level. In many cases, a small section of the ceiling may need to be cut out and replaced if the gypsum board is saturated.

For villas in Al Barsha, look for providers with Dubai Municipality approval and ask for their methodology and proof of post-remediation verification.