How can I reduce moisture and prevent musty smells?« Back to Previous Page

After the heavy rains last month, I noticed a persistent musty smell in the lower level of our villa, which has damp patches on the walls. The AC seems to struggle to keep up with the humidity levels, even when it's on full blast. Is there anything we can do to prevent this from happening again and reduce the moisture in the air?
Posted by Lauren Martinez
Asked on December 16, 2025 8:31 am
To address the persistent musty smell and damp patches you're experiencing in your villa's lower level, it is crucial to understand that humidity control in such environments can significantly impact indoor air quality (IAQ). In dubai/UAE, where we often experience high temperatures and low relative humidities during the day, coupled with high nighttime humidities due to cooling processes, maintaining a balanced environment becomes quite challenging. This scenario calls for careful attention to dehumidification strategies.

Firstly, it's imperative to recognize that air conditioners (AC) alone may not be sufficient in managing humidity levels effectively, especially when dealing with external factors like heavy rains or high indoor moisture sources such as plumbing leaks or poor ventilation. In your case, the AC seems overwhelmed by the humidity levels, indicating a possible need for specialized dehumidification equipment.

It would be wise to conduct a professional inspection of the area to identify any hidden water sources and ensure proper drainage systems are in place. This step is particularly important given the UAE's regulations which require adherence to building codes that prevent moisture-related issues. The inspection should also evaluate your current HVAC system’s efficiency, as upgrading or adding dehumidification units might be necessary.

In terms of practical steps, consider installing a high-capacity dehumidifier in the affected area. Models with a capacity of at least 50 liters per day for an average villa would likely be adequate, but this can vary based on your specific space and humidity levels. It’s also beneficial to place the dehumidifier away from direct sunlight and close to areas where moisture is most prevalent, like bathrooms or kitchens.

Ventilation plays a critical role in moisture management as well. Ensure that exhaust fans are operational and used regularly, especially after showering or cooking. Opening windows during cooler parts of the day can also help reduce indoor humidity levels, but this must be done cautiously to avoid external moisture entering the home.

Another effective strategy is using desiccant dehumidifiers, which can operate at lower temperatures than conventional refrigerative dehumidifiers and are less affected by temperature changes. These units work well in environments where the AC struggles due to fluctuating humidity levels.

Regular maintenance of your HVAC system is also essential. Ensuring filters are clean and replacing them as needed will improve air flow and efficiency, which can indirectly help with moisture control. Additionally, inspecting and cleaning condensate pans and drain lines in your AC units can prevent water buildup that could lead to mold growth.

Lastly, it’s advisable to maintain a relative humidity level of around 40-60%, as recommended by the UAE’s health and safety standards for indoor environments. Monitoring tools like hygrometers can be helpful in tracking these levels and making adjustments as needed.

If you find it challenging to manage moisture issues on your own, don’t hesitate to contact a professional service provider such as Saniservice at 800-MOLDS or email hello@saniservice.com for expert assistance.
Posted by Sani Admin
Answered on December 19, 2025 6:17 am