Why are some air filters labeled as "washable"?

Air filters labeled as "washable" are specifically designed to be cleaned and reused. This means that instead of being discarded after a certain period, these filters can be taken out, cleaned thoroughly, and then put back into use. This design is advantageous for both cost savings and environmental considerations, as it reduces waste by allowing for multiple cycles of use.

Washable filters are typically made from materials that can withstand washing without degrading, ensuring they maintain their filtering efficiency over time. Regular maintenance, such as washing, is necessary to keep the filter functioning optimally, as dirt and contaminants build up on the filter’s surface.

In contrast, filters that are designed to be replaced regularly are typically disposable and not meant for cleaning. Additionally, filters that cannot be reused are generally made from materials that do not support cleaning, while self-cleaning filters, which are not commonly found, would have a mechanism to clean themselves without user intervention, differing from the purpose of washable filters.