How to treat and prevent mold from AC leak?« Back to Previous Page

The black spots you're observing are a classic indicator of active mold growth, specifically triggered by the ongoing moisture from your AC leak. In Dubai's high-humidity climate, this situation can escalate rapidly. Bleach is a common but ineffective DIY solution; it only bleaches the visible pigmentation on the surface and does not address the root system (hyphae) penetrating the porous materials like drywall and carpet backing. The moisture reactivates the colony immediately.

The most effective treatment requires a systematic approach. First, and most critically, you must stop the moisture source. A certified HVAC technician should service the AC unit to address the condensate drain line clog or pan crack causing the leak. Until this is fixed, any remediation is temporary.

For the affected area, the porous materials are likely compromised. The carpet and the bottom section of the drywall where the water has wicked upwards must be removed and properly disposed of. The underlying concrete slab and remaining wall studs then require professional-grade antimicrobial application and HEPA vacuuming to eliminate all residual spores. Simply wiping the surface is insufficient and can aerosolize spores, spreading the contamination.

Prevention is key. Ensure your AC unit is serviced quarterly to prevent drain line blockages, a common issue here due to dust and rapid microbial growth in the lines. Maintain indoor humidity levels below 60% using dehumidifiers if necessary. For a situation like this, where moisture has been present for weeks and visible growth has recurred, a professional inspection is strongly recommended to assess the full extent of the damage behind walls. We offer comprehensive mold inspections and remediation services in full compliance with Dubai Municipality guidelines. For an immediate assessment, please call our experts at 800-MOLDS (800-66537) or email hello@saniservice.com.