Is AC leak mold causing our allergies? How urgent?« Back to Previous Page

The AC in my bedroom has been leaking a bit for a couple of months, and now I’m seeing black spots spreading on the wall behind the wardrobe. My husband and I have both had a constant stuffy nose and itchy eyes for weeks, and it’s only bad when we’re at home. Could this mold be the cause of our allergies, and how urgent is it to get it professionally cleaned?
Posted by Jin Matsumoto
Asked on April 16, 2026 11:45 am
Based on your description, the black spots and your persistent symptoms are almost certainly connected. The constant moisture from an AC leak creates an ideal environment for mold growth, and the types commonly found in such situations, like Cladosporium or Stachybotrys, are known to cause the exact allergic reactions you're describing—stuffy nose, sinus congestion, and itchy eyes.

The urgency is high. In Dubai's climate, where high humidity and year-round AC use are constant factors, a small leak can lead to a significant infestation within walls or under flooring in a matter of weeks. The mold will continue to spread and release spores into your bedroom's air, prolonging your exposure and symptoms. Leaving it also risks structural damage to the wall and the AC unit itself.

A professional inspection is critical here. The visible spots are likely just a small part of the problem; moisture will have wicked up the wall behind the wardrobe and potentially into adjacent materials. A proper assessment involves using moisture meters and thermal imaging to find the full extent of the water damage and mold growth before any cleaning can be effective.

Remediation is not a simple wipe-down. It requires containing the area, safely removing contaminated porous materials like drywall, HEPA vacuuming, and antimicrobial treatment of the area. Once the source is removed and the AC leak is repaired, your symptoms should subside. For verification, a company with its own microbiology lab can test air or surface samples to identify the mold type and confirm the environment is safe post-remediation.
Posted by Sani Admin
Answered on April 17, 2026 10:21 pm