How to clean black mold from my AC unit in Dubai?« Back to Previous Page

The black spots are likely mould growth from the consistent moisture of an AC leak, a common issue in Dubai's humid climate. The most effective DIY approach requires addressing both the wall and the AC unit to prevent it from returning.

First, fix the leak. Turn off the AC's power and check the drain line for a clog, often the culprit. Clean the drain pan and ensure it's properly sloped. For the wall, mix a solution of 1 part white vinegar to 1 part water or a diluted bleach solution (wear gloves and ensure ventilation) and scrub the mould off. Dry the area completely with a fan; moisture is the enemy.

However, DIY cleaning is only a surface-level fix for small, visible patches. You should absolutely call a professional if the mould-covered area is larger than a square foot, if the leak has persisted for months (suggesting potential internal damage), or if you or family members experience persistent allergies, headaches, or respiratory irritation. In Dubai's environment, mould can spread deep into porous materials like drywall and, crucially, inside the AC unit's evaporator coil and ducts, which you cannot properly clean yourself. A professional inspection with borescope cameras and subsequent remediation by a company with a microbiology lab can identify the full extent of contamination and verify its removal with before-and-after testing, which is the only way to be certain it won't return.