How to stop AC leak causing mold in Dubai apartment?« Back to Previous Page

An AC leak creating damp conditions is a primary cause for mold growth in Dubai's climate. Your description of black speckles and an earthy smell when the unit runs strongly suggests active mold is present.

First, address the source: stop the leak. The most common causes are a clogged condensate drain line or a disconnected drain pipe. Turn off the AC unit at the circuit breaker. Check the drain line (usually a white PVC pipe) near the outdoor unit for a blockage; a wet/dry vacuum can sometimes clear it. If the leak is from the indoor unit itself, this indicates a more complex issue requiring a certified HVAC technician to resolve, as mandated by Dubai regulations for proper refrigerant handling.

For the existing mold, cleaning visible patches on hard, non-porous surfaces like the skirting board with a diluted detergent solution can help. However, if the carpet or drywall behind the skirting is damp and affected, surface cleaning is insufficient. These porous materials often need professional remediation to prevent spores from spreading and the mold from returning. The high humidity will cause it to regrow quickly if any moisture remains.

Preventing recurrence is critical. Ensure the HVAC technician fully resolves the leak. Afterwards, consistently running your AC helps control indoor humidity levels, which is vital for preventing condensation. In many Dubai apartments, having a professional service, including a full system clean and application of an EPA-approved anti-microbial coating on the coil and drain pan, can help reduce future microbial growth. For confirmation the mold is gone, a post-remediation verification test from an independent lab provides documented evidence. Given the description, a professional inspection is recommended to assess the full extent.