Could AC issues cause wall dampness and mold?« Back to Previous Page

After the rain last month, I noticed a persistent dampness in the corner of my bedroom near the window. Upon closer inspection, there seems to be mold growing on the wall, even though we regularly clean and maintain the area. The AC in this part of the apartment also seems to struggle more than usual, making it harder to keep the space dry. Could this be contributing to both the dampness and the musty smell?
Posted by Margaret Thomas
Asked on December 19, 2025 1:46 pm
Absolutely, it's quite plausible that AC issues could contribute to wall dampness and mold growth. In the UAE climate, where extreme temperatures are common, the AC system plays a significant role in maintaining indoor comfort and preventing moisture-related issues.

In your situation, if you're experiencing persistent dampness near the window and noticeable mold despite regular cleaning, it's crucial to investigate potential HVAC (Heating, Ventilation, and Air Conditioning) related causes. In Dubai, as in many other areas, AC units are often installed improperly or not maintained adequately, leading to inefficiencies that can exacerbate moisture problems.

Firstly, let’s consider the air flow dynamics around your bedroom window. If the AC unit is not properly balanced, it might cause a negative pressure situation where outside air infiltrates through cracks and openings near windows or doors. This influx of moist outdoor air could be the catalyst for increased humidity levels and subsequent mold growth on the walls.

Furthermore, check if there are any issues with your AC’s dehumidification capabilities. In Dubai, which experiences high humidity during certain times of the year, an inefficient AC might not adequately remove moisture from the air, leading to condensation on cooler surfaces like windows or walls, especially in corners where airflow is restricted.

It's also worth considering whether the AC filter needs replacement or cleaning. A dirty or clogged filter can reduce airflow and cooling efficiency, potentially leading to increased humidity levels inside your apartment.

Given these potential issues, I strongly recommend a professional inspection by an HVAC specialist familiar with UAE standards. In Dubai, you might want to contact companies like Saniservice who offer comprehensive air quality assessments that include checking for AC system inefficiencies contributing to dampness and mold growth.

Remember, in the UAE, specific regulations regarding indoor environmental quality do exist. For instance, the Federal Institute of Public Health has guidelines on maintaining air quality and preventing mold growth which HVAC systems must adhere to.

Do not hesitate to call 800-MOLDS or email hello@saniservice.com for a professional assessment. Early intervention can prevent further deterioration of your living space and protect both your health and property value.
Posted by Sani Admin
Answered on December 22, 2025 8:23 am