Can a dehumidifier effectively control basement moisture?« Back to Previous Page

After the heavy rain last month, I noticed a persistent musty smell in our basement, which has only gotten worse over the past few days. The humidity seems so high that even with the dehumidifier running, it’s barely making a dent. Is there anything else we can do to control the moisture down there?
Posted by Youssef Al-Nasser
Asked on December 31, 2025 7:06 am
High humidity levels can indeed be a serious issue, especially after heavy rainfall. In Dubai/UAE, the high humidity is a common concern, particularly during certain seasons. A dehumidifier can help but may not always be enough to control moisture effectively, especially in basements that are prone to water intrusion.

Firstly, it’s crucial to understand that while dehumidifiers can reduce relative humidity by removing excess moisture from the air, they might struggle with significant moisture sources like leaks or seepage. In your case, since the musty smell and high humidity have worsened despite running a dehumidifier, it suggests there may be an underlying issue of water ingress.

In Dubai/UAE, as per the Building Code 1322-2019, it is mandatory to ensure adequate drainage systems around buildings to prevent water accumulation. This can include proper sumps and pumping systems in basements. Ensuring these are functioning properly can significantly reduce moisture issues.

If you suspect that your basement’s high humidity might be due to a leak or poor drainage, I strongly recommend consulting with a professional for an inspection. They will be able to identify the source of the problem and suggest appropriate remedial actions. Call 800-MOLDS or email hello@saniservice.com if you need assistance.

Some additional tips:
• Ensure that your dehumidifier is placed in a central area where it can effectively draw air from all corners of the basement.
• Regularly clean the filters and collection tanks to maintain its efficiency.
• Consider using desiccant packs or silica gel to absorb moisture in specific areas if needed.
• Seal any cracks or gaps around pipes, windows, or doors to prevent drafts that could bring in humid air.

In summary, while a dehumidifier is a good start, it might not be sufficient on its own. A thorough inspection and possibly some structural adjustments are recommended to address the root cause of high humidity in your basement.
Posted by Sani Admin
Answered on January 2, 2026 3:15 pm