How to safely remove mold from AC dampness and prevent it?« Back to Previous Page

The black spots are likely mildew or mould from condensation, a common issue in Dubai's humidity when cold AC air meets warmer surfaces. For a small area, wear an N95 mask and gloves. Scrub the baseboard with a solution of one part white vinegar to four parts water; avoid bleach as it only removes the colour and can worsen indoor air quality. Dry the area thoroughly with a fan afterwards.

To prevent recurrence, you must address the humidity source. Move the potted plant, as soil and trapped moisture promote mould growth. Ensure the upstairs AC unit is set to a consistent temperature, ideally between 22-24°C, to reduce excessive condensation. Check that the unit's condensate drain line is not clogged, as a blocked line can cause excess dampness.

For persistent dampness in the hallway, the issue may be a leaking AC duct or inadequate insulation, both common in villas. A professional inspection can identify if the ductwork is sweating or if the unit's capacity is mismatched for the space. In many cases, improving ventilation or adding a dedicated dehumidifier in problem areas is necessary to manage the high ambient moisture levels, especially during the summer months. If the mould covers more than one square meter or returns quickly after cleaning, a certified mould assessment is recommended to identify the species and full extent.