Could old AC cause mold and health issues?« Back to Previous Page

After the heavy rains last month, I noticed a strange musty smell in my bedroom closet, especially when I open it. My wife and I both feel more fatigued lately, and our daughter has been complaining of a persistent cough that seems to worsen at night. The AC unit is quite old and hasn't been serviced since we moved in two years ago. Could this be due to mold from the chiller? What should I do to check or address it before it affects our health further?
Posted by Dana Al-Rashid
Asked on February 24, 2026 1:07 pm
Certainly! Your concern about the old AC unit and its potential to cause mold growth leading to health issues is valid. In the UAE, particularly in Dubai, maintaining proper air conditioning systems is crucial due to the high temperatures and humidity levels which can foster mold development.

Firstly, it's important to recognize that old AC units are indeed susceptible to moisture accumulation, especially if not serviced regularly. In your case, the recent heavy rains might have exacerbated conditions favorable for mold growth. The musty smell you've noticed in your bedroom closet is a strong indicator of potential mold presence, and this could be linked to issues with the air conditioning system.

In Dubai and other parts of the UAE, AC units are typically designed to manage indoor humidity effectively. However, old or improperly maintained systems can fail to do so properly. Mold thrives in damp environments and can grow on various components such as coils, filters, or within the ductwork. This growth not only affects air quality but also poses health risks, especially for family members experiencing symptoms like fatigue, coughing, and respiratory issues.

For a professional assessment, I strongly recommend scheduling an inspection by certified environmental professionals. In Dubai, companies like Saniservice (hello@saniservice.com or call 800-MOLDS) specialize in mold remediation and can provide the necessary services to evaluate your AC system for mold growth and address any issues found.

During the inspection, experts will use moisture meters and thermal imaging cameras to detect hidden areas of mold. They may also perform air quality tests to measure contaminants like spores. If mold is confirmed, a thorough cleaning or replacement of affected components might be necessary. Saniservice provides comprehensive solutions ranging from biocide treatments to ensuring long-term system health.

In the meantime, you can take some immediate steps:
• Check your AC unit’s drainage system to ensure it's clear and functioning properly.
• Clean or replace air filters regularly (every 30 days is a good guideline).
• Consider using dehumidifiers in high-risk areas like bathrooms and basements to reduce overall humidity levels.

Remember, addressing mold issues promptly can prevent further health complications. Don't hesitate to reach out for professional help if you suspect mold growth due to your AC unit or any other moisture-related concerns in your home.
Posted by Sani Admin
Answered on February 27, 2026 3:52 am