How to fix AC leak and treat mold on wall?« Back to Previous Page

The persistent AC leak you're describing is a very common issue in Dubai, driven by our high ambient humidity and year-round cooling demand. The black speckles are almost certainly the initial stages of mold growth, fueled by the constant moisture. Here’s a technical breakdown of the required action.

First, the root cause must be addressed: the AC condensate drain line is likely clogged with algae and microbial sludge, a frequent occurrence here. Simply wiping the water is ineffective. The unit must be professionally serviced to clear the drain pan and line, ensuring condensate is properly evacuated. This is not a DIY fix, as improper handling can damage the sensitive HVAC system.

For the affected wall, surface cleaning is insufficient. The moisture has likely penetrated the gypsum board. The area must be isolated, and the wet wall section thoroughly dried using industrial-grade HEPA-air-scrubbers and dehumidifiers to draw out all residual moisture from within the wall cavity—a critical step often missed in DIY attempts. Once completely dry, the mold-colonized section of drywall must be removed and discarded. The underlying structure should then be treated with an EPA-approved antimicrobial solution, not bleach, to neutralize any remaining spores. Finally, the area must be reconstructed with new, mold-resistant drywall.

Given the health risks associated with mold exposure and the complexity of ensuring it is eradicated at the source, I strongly recommend a professional inspection and remediation. Our certified team at Saniservice uses thermal imaging to pinpoint moisture and follows strict Dubai Municipality guidelines for safe, effective mold removal. For a definitive solution, please call us at 800-MOLDS (800-66537) or email hello@saniservice.com for a comprehensive assessment.