How to permanently fix AC leak and black mold?« Back to Previous Page

Based on your description, that's a classic case of mold growth due to an AC condensate leak, exacerbated by our high Dubai humidity. You need to address both the moisture source and the existing contamination to fix it permanently.

First, shut off the AC unit to stop the water flow. The black spots are likely Stachybotrys or Aspergillus, which can pose health risks. For a small area, you can carefully clean it with a solution of diluted white vinegar or a specialized EPA-approved fungicide, wearing an N95 mask and gloves. However, cleaning only removes the visible growth; it doesn't address the spores embedded in the porous wall material.

The permanent fix is resolving the AC leak. This is almost always a job for a certified HVAC technician. Common causes here include a clogged condensate drain line from dust and sand, a damaged drain pan, or a misaligned pipe. They will need to clear the line, ensure proper drainage, and check the unit's insulation.

Crucially, the hidden moisture within the wall cavity must be professionally dried using dehumidifiers and air movers to prevent immediate regrowth. Given the spread you've described and the potential for hidden damage, a professional inspection is strongly advised. We use thermal imaging to map the moisture extent and air testing to identify spore types and concentration, which is essential for a proper remediation protocol.

For a guaranteed permanent solution, please call our specialists at 800-MOLDS (800-66537) or email hello@saniservice.com for a comprehensive assessment.