Could old AC filters cause a musty odor?« Back to Previous Page

Could old AC filters cause a musty odor? Yes, definitely. Old and dirty air conditioning filters can accumulate dust, mold spores, and other particulates which could indeed lead to that musty smell you're experiencing. This is especially common after an intense sandstorm like the one last month, as it brings in fine particles that can easily infiltrate your filter.

In Dubai/UAE, regulations might not be overly stringent on HVAC systems but it's crucial to maintain them properly for health and comfort reasons. If you've noticed a persistent musty smell particularly when turning on the AC after being away for days, this is likely indicating an issue with your air filters or possibly the air handler itself.

A good practice would be to replace your AC filters regularly - every 30-45 days depending on usage and environment. For homes in dusty areas like Dubai, a more frequent replacement might be necessary. If you haven't changed them since the storm, that could easily explain this smell. Make sure to use high-quality filters recommended by your HVAC system's manufacturer.

However, if replacing the filter doesn't resolve the issue or if the smell persists, it’s best to call in a professional for an inspection. Mold can grow in moist environments and old filters might not be trapping moisture properly, leading to mold development. In such cases, Saniservice at 800-MOLDS (800-66537) or email hello@saniservice.com could provide the necessary assessment and remediation.

Remember, it's always better to address these issues early on for your health and the longevity of your AC unit. Keeping your air conditioning system clean is a key part of maintaining indoor air quality in our hot and humid climate.