AC mold from dripping unit: DIY clean or call pro?« Back to Previous Page

That black mold is a common issue here in Dubai, especially with the recent humidity spike causing more condensation in AC units. The dripping water means the drain line is likely partially clogged, creating the constant moisture that mold needs to grow.

You can clean the visible patch on the wall yourself with a mixture of detergent and water, but avoid bleach as it can damage paint and its fumes are problematic in enclosed spaces. However, this is only a temporary fix. The core issue is inside the AC unit itself—in the drip pan and drain line where the mold is actively growing. Without addressing this hidden source, the mold will return.

For a long-term solution, a professional AC and mold remediation service is necessary. They will fully clear the clogged drain line, disinfect the internal drip pan, and treat the air handler to stop the recurrence. In many cases, the internal insulation lining the ducts can also be contaminated if the issue has persisted, which requires specialized cleaning.

Given the climate, this is a persistent problem. After a professional cleaning, ensure your AC unit is serviced regularly to prevent future clogs. For apartments, the building management is typically responsible for the external drain line, so reporting the persistent dripping to them is also a good step. If the mold patch is large or you notice a persistent musty odor, a professional inspection is recommended to assess the full extent.