Is AC leak mold dangerous, or can I clean it myself?« Back to Previous Page

That black spot returning darker after a bleach wipe is a clear sign of active mould growth beneath the surface, and the scratchy throat suggests it's already affecting your indoor air. In Dubai's climate, an AC leak creates a perfect, continuous source of moisture that mould thrives on, making DIY solutions often temporary.

Bleach only removes surface discolouration on non-porous materials; it doesn't kill the root structure penetrating drywall or ceiling plaster. The moisture from the leak has likely seeped into the building material itself. For a recurring problem like this, a professional inspection is strongly recommended to assess the extent of the hidden damage and identify the mould species, as some types commonly found in AC systems can cause more significant irritation.

The priority is stopping the source. You must get the AC leak repaired first; otherwise, the mould will return regardless of any cleaning. For a small, surface-level area, a thorough cleaning with a dedicated mould remover (not bleach) can sometimes suffice if the material is completely dried out. However, given the leak history, the recurrence, and your physical reaction, the mould has likely established itself beyond a simple clean.

A proper inspection involves moisture meters to find hidden dampness and often air or tape-lift sampling to identify the spores present. This diagnostic approach, which we conduct through our microbiology lab, determines the necessary remediation steps, from targeted cleaning to controlled removal of affected materials. For your health and to prevent structural damage, an assessment is the safest course of action.