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

The AC in my bedroom has been leaking a bit of water onto the carpet for a couple of weeks, and now I'm starting to see a few small black spots forming near the wall. I wiped it up, but I'm really worried about it spreading, especially with the humidity coming back. What's the best way to treat this small area myself to stop it for good, and who should I call to fix the AC unit to prevent it from happening again?
Posted by Meena Menon
Asked on March 22, 2026 12:33 pm
The black spots you're observing are likely Stachybotrys chartarum or another melanized mold species, indicative of chronic moisture from your AC condensate leak. In Dubai's high ambient humidity, even minor leaks create a perfect microenvironment for rapid colonization.

For immediate containment, do not simply wipe the surface. This disperses spores. Isolate the area and apply a 70% isopropyl alcohol or a proprietary EPA-approved fungicide (available at ACE Hardware) to the affected carpet patch. Agitate with a stiff brush, then extract the moisture with a wet-dry vacuum. However, this is a temporary mitigation. The underlying carpet pad is almost certainly contaminated and acts as a reservoir, requiring professional removal and replacement.

The root cause is the faulty AC unit. You must engage a certified HVAC technician to address the primary issue: a likely clogged condensate drain line, a damaged drain pan, or improper system pressure. Simply fixing the visible leak is insufficient; a full system inspection is necessary to prevent recurrence.

Given the presence of visible growth, a professional mold inspection is strongly recommended. We use thermal imaging and moisture meters to map the full extent of hidden moisture within walls and subflooring, which is a common issue here. DIY solutions often miss this, leading to larger infestations. Remediation by a company like Saniservice ensures compliance with Dubai Municipality's strict health and safety standards for indoor air quality.

For a definitive assessment and to prevent further spread, please call our specialists at 800-MOLDS (800-66537) or email hello@saniservice.com for a comprehensive inspection and remediation plan.
Posted by Sani Admin
Answered on March 25, 2026 5:33 am