AC mold keeps returning, who should I call for help?« Back to Previous Page

Bleach only removes surface discoloration; it does not kill the mold's root structure (hyphae) penetrating the wall, nor address the moisture source. The rapid return and unbearable smell indicate a serious, active infestation behind the wall, likely in the insulation, requiring professional remediation.

You need two separate specialists. First, call a certified HVAC technician to fix the AC unit's leak and drain line—this is the root cause. In Dubai's climate, clogged condensate drains are a primary culprit due to dust and year-round operation. Until the leak is permanently stopped, the mold will always return.

For the mold itself, a specialized indoor environmental company is required for a case this severe. They will conduct an inspection, likely involving moisture meters and borescope cameras, to determine the full extent of the damage inside the wall cavity. Proper remediation involves isolating the area, removing contaminated porous materials (like damaged drywall and insulation), HEPA vacuuming, and applying EPA-approved antimicrobial solutions. For clothing, specialized ozone or hydroxyl treatment can remove the smell if washing doesn't work.

A reputable company will provide before-and-after testing to verify the spore count has been returned to safe levels. Given the hidden nature of this growth, a DIY approach risks spreading spores and inadequate removal.