Could AC be causing bedroom closet mold?« Back to Previous Page

After the rain last month, I noticed a strange musty smell accumulating in my bedroom closet. Upon closer inspection, there seemed to be some discoloration on the wall near the floor, and when I touched it, it felt slightly damp. The AC seems fine, but could that still be contributing to the mold issue? Could you help me figure out what’s going on here?
Posted by Jaya Mukherjee
Asked on February 23, 2026 7:54 am
Certainly. The scenario you've described sounds like a potential mold issue that could be exacerbated by several factors including the air conditioning (AC) system, humidity levels, and perhaps poor ventilation within your bedroom closet.

In the UAE, particularly Dubai, we experience varying climatic conditions throughout the year which can create an environment conducive to mold growth. The AC unit itself is not necessarily a direct cause of mold; rather, it might contribute indirectly if there are issues with its maintenance or the indoor air quality. Mold thrives in moist environments and requires temperatures between 14°C to 37°C (57°F-99°F) for rapid growth.

The discoloration on your wall near the floor, coupled with a musty smell upon touch, is indicative of potential mold presence. In Dubai, it's crucial to address such issues promptly as mold can lead to health problems and structural damage over time.

Given the location, it would be prudent to conduct an inspection by a professional environmental consultant or service provider like Saniservice, who operates under UAE regulations. They will use advanced tools such as moisture meters and thermal imaging cameras to identify areas of high humidity that could harbor mold growth.

In the meantime, here are some steps you can take:

1. Ensure your AC system is functioning optimally by having it serviced regularly. Check for any signs of water leakage or condensation accumulation which can increase humidity levels.
2. Improve ventilation in your bedroom closet. Consider using exhaust fans or opening windows when weather permits to reduce moisture buildup.
3. Keep the interior temperature and relative humidity (RH) under control. Aim for a RH level below 60% as per WHO guidelines, especially during summer months.
4. Dry out any affected areas thoroughly once identified. Use dehumidifiers in high-risk spaces if necessary.

Remember that prolonged exposure to mold can cause respiratory issues, allergies, and other health complications. Therefore, it is advisable not to delay professional intervention. Should you require immediate assistance or have further questions, feel free to contact Saniservice at 800-MOLDS (800-66537) or via email at hello@saniservice.com.

It's worth noting that while AC units are generally well-maintained in the UAE due to the harsh climate, occasional malfunctions can indeed contribute to moisture issues. However, this is not always the case, and addressing indoor humidity levels through proper ventilation and dehumidification strategies remains key.
Posted by Sani Admin
Answered on February 25, 2026 2:12 pm