Black wall mold fomr AC leak: DIY or call a pro?« Back to Previous Page

That black mold returning after a vinegar wipe means the underlying issue is active. In Dubai's climate, a persistent AC leak creates a continuous moisture source that mold thrives on. The damp smell confirms it's not just surface level; the wall is likely damp inside.

For a small area (under one square meter), you could try a stronger fungicidal cleaner specifically for masonry, not bleach. However, DIY is a temporary fix if the leak isn't repaired and the wall thoroughly dried. The moisture has probably seeped into the wall and possibly behind it, requiring professional-grade drying equipment to prevent regrowth.

You should call a professional. The AC unit itself needs inspection to stop the leak, which is a job for an HVAC technician. For the mold and water damage, a remediation expert should assess the wall's moisture content with a meter, not just visually. They can determine if the drywall needs replacement and ensure proper containment during cleaning to prevent spores from spreading. Saniservice's lab testing can also identify the mold type, which is crucial for assessing risk and verifying the cleanup was successful.