How to control humidity in a sealed Dubai closet?« Back to Previous Page

Our master bedroom walk-in closet, which has no external windows, has developed black spots on the leather bags and shoes we stored in there. We keep the AC running but the room always feels a bit damp. I’m worried it’s going to ruin all our clothes and spread. What’s the most effective way to control the humidity in a sealed closet here in Dubai to stop this for good?
Posted by Karen Lee
Asked on April 17, 2026 7:15 pm
The black spots are likely mold growth caused by Dubai's high ambient humidity being trapped in the sealed, unventilated closet. The constant AC cooling creates a significant temperature difference with the warmer, stagnant air inside, leading to condensation on surfaces and your leather goods, which then provides the moisture mold needs to thrive.

The most effective long-term solution is to actively manage the closet's microclimate. Start by removing all affected items to prevent further damage and cross-contamination. For the closet itself, install a small, plug-in dehumidifier or several rechargeable desiccant dehumidifier bags (like silica gel) and place a small hygrometer inside to monitor the relative humidity—aim to keep it consistently below 60%. Ensure the closet door is not completely sealed; leaving it slightly ajar allows some air exchange with the room's air-conditioned environment.

For a more permanent fix, consider having an HVAC technician assess if a small duct can be run to supply a slight amount of cooled, dehumidified air from your bedroom's AC unit directly into the closet space. This addresses the root cause by introducing the dry air the main system is producing.

Given the visible growth, a professional inspection is advisable to confirm the mold type and check for hidden moisture in walls or under flooring that could be feeding the problem. In Dubai's climate, this situation often indicates a localized humidity issue that requires targeted, mechanical intervention to resolve permanently.
Posted by Sani Admin
Answered on April 18, 2026 7:48 pm