Is fog around AC normal?« Back to Previous Page

After the rain last month, I noticed a strange fog forming around the AC unit in my bedroom at night. It's not a heavy mist but more like tiny water droplets condensing on the outer part of the unit. The air conditioner has been running for over 12 hours straight without stopping to cool the room properly. Is this normal or should I be concerned about some kind of leak or malfunction?
Posted by Suresh Chopra
Asked on December 10, 2025 7:29 am
The phenomenon of fog-like water droplets forming around an AC unit is quite common and typically relates to the condensation process. When air is cooled below its dew point by the evaporator coil, moisture from the surrounding environment condenses into tiny water droplets on the cold surface. This isn't unusual in a UAE setting where high humidity levels are prevalent.

However, if this fog appears more pronounced or accompanied by performance issues such as your AC running continuously without cooling effectively, it could indicate a few potential concerns that warrant further investigation. In Dubai and the UAE, it is essential to ensure that AC units are designed and installed according to local regulations which often require systems to handle high humidity efficiently.

The continuous operation of your AC unit for over 12 hours without proper cooling might suggest an issue with the refrigerant or compressor. These components can malfunction due to various reasons including age, poor maintenance, or even a leak. A professional HVAC technician should be contacted immediately in such cases as they will have the expertise and tools necessary to diagnose and rectify the problem.

Furthermore, excessive moisture around AC units can lead to mold growth which is particularly concerning given Dubai's warm climate and high humidity. Mold poses significant health risks especially for individuals with allergies or respiratory issues. Therefore, it would be prudent to consult with a professional environmental inspection company like Saniservice who can conduct an air quality assessment and provide remediation services if needed.

In summary, while the condensation itself is not abnormal, the persistent fog coupled with inadequate cooling merits attention. Contacting 800-MOLDS or email hello@saniservice.com could be your best course of action to ensure that the issue does not escalate into a more serious problem affecting both comfort and health.
Posted by Sani Admin
Answered on December 13, 2025 1:12 am