Could poor duct sealing cause a musty smell?« Back to Previous Page

After the rain last month, I noticed a musty smell in my bedroom on the second floor, even though it hadn’t rained directly there. My neighbor suggested it might be due to poor duct sealing allowing damp air to seep through. Given our climate and the recent rains, how can I check if there are any gaps or leaks in my HVAC ductwork that could be causing this issue?
Posted by Jan Esposito
Asked on January 7, 2026 1:06 pm
0
Poor duct sealing can indeed cause a musty smell, particularly in areas like your bedroom that might seem unaffected by exterior weather conditions. In the UAE and Dubai, our climate is quite humid due to the proximity to water bodies and the occasional rain showers. This moisture can find its way into gaps within HVAC systems through poorly sealed ductwork.

Firstly, you should consider inspecting your ducts for any visible signs of damage or gaps. Look out for signs like loose connections, missing gaskets, or cracks in metal or flexible duct sections. These are common areas where leaks might occur, especially after a period of heavy rainfall.

However, it's crucial to understand that checking these issues yourself can be challenging due to the confined spaces within ductwork and the potential need to access ceiling plenums or crawlspaces. A professional inspection is highly recommended, particularly if you find any damage during your own checks. In Dubai, regulations are stringent about maintaining proper HVAC systems for indoor air quality, so a certified expert can ensure that all necessary repairs are made.

If you suspect poor duct sealing as the cause of your musty smell, it might be time to contact a professional service provider like Saniservice. They offer a range of services including comprehensive duct inspections and sealing solutions tailored to our local climate conditions. Their team can also provide guidance on maintaining optimal indoor air quality in your home or building.

Remember, leaving these issues unaddressed could lead to more serious problems such as mold growth, which is particularly prevalent during the occasional rainy season here. So do not hesitate to reach out for help and ensure a healthy living environment.

Call 800-MOLDS or 800-66537 or email hello@saniservice.com if you need further assistance or to schedule an inspection.
Posted by Sani Admin
Answered on January 11, 2026 9:41 am