How to stop AC leak and remove black mold for good?« Back to Previous Page

The leak must be fixed first, or the mold will return. AC leaks in Dubai are often due to a clogged condensate drain line from dust and microbial growth, a common issue in our climate. Turn off the AC unit, then check the white PVC drain pipe for a blockage. A wet-dry vacuum can sometimes suction out the clog from the pipe end outside.

For the existing mold, never just spray bleach. On porous surfaces like skirting boards, it only bleaches the surface and doesn't kill the root. Scrub the area with a dedicated mold remover or a solution of detergent and water. Wear an N95 mask and gloves to avoid inhaling spores.

However, visible mold on the surface often indicates deeper growth within the wall or under the carpet if the leak has been ongoing. The only way to know the full extent is with a professional inspection, including moisture mapping. For a villa in JVC, this is recommended to ensure the structure isn't compromised.

To prevent recurrence, ensure your AC unit receives biannual professional maintenance that includes cleaning the drain pan and flushing the condensate line with an algae inhibitor. Keeping relative humidity indoors below 60% will also help prevent condensation issues. If the leak persists after your attempts, a certified HVAC technician should assess the unit for issues like a faulty drain pump or improper insulation.