Is mold from pipes causing AC issues?« Back to Previous Page

After the heavy rains last month, I noticed a musty smell coming from the basement, which we use as storage space. Upon checking, I found some mildew on the walls near where the pipes run to the chiller unit. The AC in our apartment seems to be struggling more than usual lately too. Could this be related to mold growth, and should we replace or clean the mold chiller?
Posted by Akira Takahashi
Asked on December 23, 2025 12:31 pm
Yes, mold from pipes can indeed cause air conditioning issues. In Dubai and the UAE, we've seen several cases where water intrusion due to heavy rains has led to the growth of mold on walls and other surfaces, including the vicinity of chillers. This moisture-rich environment provides an ideal breeding ground for molds like Aspergillus, Penicillium, and Cladosporium.

When these molds grow near or inside your AC system or the chiller unit, they can cause several problems:
1. Air Quality Degradation: Mold releases spores into the air, which can exacerbate allergies and asthma symptoms.
2. Reduced Efficiency of AC: Moldy coils and filters can obstruct airflow and reduce the cooling capacity of your system. This leads to the AC struggling more than usual to maintain a comfortable temperature.
3. Potential Health Risks: Exposure to mold spores can cause respiratory issues, skin irritations, and other health problems.

Given your observations in the basement, it is highly likely that the musty smell and the mildew on the walls near the pipes are related to the recent heavy rains. This moisture could have entered through leaks or poor sealing around the AC unit or chiller system.

To address this issue, I would recommend a thorough inspection by a professional mold remediation company familiar with UAE standards. They can assess the extent of the contamination and provide appropriate solutions. For immediate steps:

1. Seal Leaks: Ensure that any water leaks are sealed to prevent further moisture intrusion.
2. Dry Out Affected Areas: Use dehumidifiers or fans to dry out wet areas quickly to inhibit mold growth.
3. Clean and Replace Filters: Regularly clean your AC filters, especially if they appear moldy. Consider replacing them with better quality filters that are less prone to accumulating contaminants.

In Dubai, it's crucial to adhere to local health and safety regulations (like those outlined in the UAE’s Health Regulations No. 2 of 1987) when dealing with mold issues. If left untreated, mold can spread rapidly and pose significant risks to your health and property value.

Should you need assistance, feel free to contact us at 800-MOLDS or email hello@saniservice.com for professional guidance and remediation services tailored to the UAE market.
Posted by Sani Admin
Answered on December 25, 2025 4:39 am