Black mold from AC leak causing child's runny nose?« Back to Previous Page

The black speckles and fuzzy patch are very likely mold growth caused by the constant moisture from the AC leak. In Dubai's high humidity, this persistent dampness creates an ideal environment for mold, and the connection to your child's persistent runny nose is a legitimate concern, as mold spores are a common irritant.

For a small, surface-level patch you just noticed, a DIY clean with a vinegar solution can be a first step. However, given the leak has persisted for months, the mold has likely penetrated the porous wall material behind the surface. Vinegar only addresses surface growth and will not remediate the root problem inside the wall. The AC unit itself and its internal drip pan are also probable contamination sources that require specialized cleaning.

In this scenario, with a health symptom present and a long-standing moisture issue, a professional inspection is strongly advised. They can assess the full extent of the damage inside the wall cavity and the AC system, which is critical for a complete solution. Reputable providers use moisture meters and borescopes to see inside walls and will typically recommend lab analysis of a tape lift sample to accurately identify the mold type, which informs the correct remediation protocol. This evidence-based approach is the best way to resolve the issue for your family's health and prevent its return. You can request this assessment from a company with documented before-and-after testing capabilities.