How to quickly test and clean AC mold safely?« Back to Previous Page

The AC in our bedroom has been leaking a little for a couple of months, and now we've found black spots spreading along the wall behind the wardrobe. My wife has been waking up with a stuffy nose and itchy eyes for weeks. What is the fastest way to get this professionally cleaned and tested to make sure it's safe?
Posted by Monika Bakker
Asked on April 30, 2026 11:30 am
Stop using the AC in that room immediately. The black spots spreading from a leak indicate active growth, and your wife's symptoms are a common reaction to mould exposure. The fastest, safest approach requires professional assessment first, not cleaning.

In Dubai's climate, the constant humidity and condensation from AC leaks create an ideal environment for mould. A proper inspection will identify the full extent of the contamination, which is likely inside the AC unit itself and potentially within the wall cavity behind the wardrobe. Cleaning visible spots without addressing the hidden source will result in immediate regrowth.

For testing, a company with its own microbiology lab can provide the fastest turnaround. They should take surface samples from the wall and air samples from the room to identify the mould species and spore count. This is crucial for assessing health risks and verifying the cleanup's effectiveness afterwards. The entire remediation process must follow standards like the IICRC S520 for mould removal.

The cleanup involves isolating the area, removing contaminated porous materials like drywall, HEPA vacuuming, and antimicrobial treatment. The AC unit will require a full internal cleaning and disinfection of the drip pan and coils. Finally, post-remediation verification testing is essential to confirm the space is safe. For a situation with health symptoms and visible growth, a professional assessment is the necessary first step to get a correct and lasting solution.
Posted by Sani Admin
Answered on April 30, 2026 6:05 pm