Is AC filter causing kitchen mustiness?« Back to Previous Page

After the rain last month, I noticed a musty smell coming from the kitchen area, which is right next to our AC unit. The filter has been replaced only once in the past two years, and now it seems like the smell is getting stronger. Could this be related to an issue with the AC filter, and how often should it really be changed to prevent such odors?
Posted by Hong Kimura
Asked on December 5, 2025 3:50 pm
0
Yes, the AC filter could indeed be causing that musty smell in your kitchen. In Dubai and the UAE, we often see such issues after a spell of rainy weather, as you mentioned. The humidity can lead to moisture accumulation within the air conditioning system which can breed mold or mildew, especially if the filter hasn't been replaced for two years.

In the UAE, per the Building Code (B2013) and the Abu Dhabi Energy Center’s guidelines, it is recommended that AC filters be cleaned or changed every three months to maintain optimal performance and prevent air quality issues. Given your situation where the smell has gotten worse, I'd recommend scheduling a professional inspection right away.

The musty odor can indicate that there's moisture build-up within the system due to an old filter not allowing proper airflow, which in turn promotes bacterial growth or mold development. A blocked or uncleaned filter can also reduce the efficiency of your AC unit and increase energy consumption.

To mitigate this issue, you should replace the air filter as soon as possible with a high-efficiency one that fits your specific model. Also, consider having a thorough inspection by an HVAC professional to ensure there are no other underlying issues like leaks or moisture condensation that need addressing.

If the smell persists after cleaning and replacing the filter, it may indicate more serious problems such as water damage within the AC unit itself. In such cases, don’t hesitate to reach out for expert help. You can contact Saniservice at 800-MOLDS (800-66537) or email them at hello@saniservice.com for professional assistance.

Remember, maintaining a clean and healthy indoor environment is crucial, especially in the humid conditions we experience during the monsoon seasons in Dubai. Keeping your AC system well-maintained can help prevent these kinds of issues from arising.
Posted by Sani Admin
Answered on December 11, 2025 8:16 am