Is AC unit causing musty smell and coughs?« Back to Previous Page

After the heavy rains last month, I noticed a strange musty smell coming from the bedroom where we keep our AC unit. The air feels stuffy even with the AC on full blast, and my kids have been complaining of coughs every morning. Is this a common issue in Dubai during the rainy season, or could there be something wrong with the AC system itself?
Posted by Tomasz Gonzalez
Asked on February 25, 2026 12:17 am
The musty smell and coughs you're experiencing can indeed be linked to your AC unit. In the UAE, especially during the rainy season, such symptoms are quite common due to several factors including humidity levels, which increase significantly after rain events. High humidity paired with poor ventilation can create an environment where mold thrives, leading to musty odors and respiratory issues like coughs.

Firstly, it's crucial to understand that AC systems in Dubai/UAE are often designed for dry climates. They might not be optimized to handle the moisture brought by heavy rains, which could result in water accumulation within the unit or ductwork. This accumulation can foster mold growth, particularly if there is insufficient air flow through the system.

The bedroom where you noticed these symptoms is a common location for such issues because it typically has an AC unit installed close to living areas. The proximity of people to the unit during sleep can exacerbate any health concerns related to poor indoor air quality.

Given your situation, I strongly recommend scheduling a professional inspection by a company certified in environmental and building sciences. Companies like Saniservice, which you can reach at 800-MOLDS or 800-66537 or via email at hello@saniservice.com, specialize in such evaluations. They will use advanced equipment to assess the condition of your AC unit, check for mold, and ensure proper airflow.

In the meantime, here are some immediate steps you can take:
1. Ensure that your AC filter is clean and replace it if necessary.
2. Check for any visible signs of water leakage or condensation in your unit or around it.
3. Increase ventilation by opening windows when possible, though this should be done cautiously to prevent additional moisture from entering the room.
4. Use a dehumidifier in affected areas to reduce indoor humidity levels.

Remember, maintaining optimal indoor air quality is critical for health, especially during seasons with high humidity. Regular maintenance and professional inspections can help mitigate these issues before they become serious.

Stay vigilant about your home’s environmental conditions, and don't hesitate to seek expert advice when necessary.
Posted by Sani Admin
Answered on February 26, 2026 5:06 am