AC mold spreading behind unit: DIY or professional in Dubai?« Back to Previous Page

The black spots spreading behind your AC unit indicate active mold growth, which is common in Dubai due to high humidity and constant AC use creating condensation. Vinegar often fails because it doesn't address the moisture source or penetrate porous materials like drywall.

For a small area, you can attempt a DIY approach using a mold-specific cleaner from Ace Hardware (not just bleach) and thoroughly dry the area. However, the leak must be fixed first—this is often a clogged drain line or faulty installation, which requires an AC technician. If the mold returns after proper cleaning and fixing the leak, or if the affected area is larger than one square meter, professional assessment is needed.

In Dubai, remediation involves containing the area, removing affected materials if necessary, and using HEPA filtration. Expect the cost for a small area to be reasonable, but prices vary based on the extent of damage behind the wall. Always request a post-remediation verification test to confirm the mold is gone; this is a standard practice for reputable companies.