This device has a three-stage filter system comprised of a pre-filter, an H13 True HEPA filter, and a High-Efficiency Activated Carbon filter. You’ll only need to clean the pre-filter with a soft-bristle dusting brush or a vacuum periodically, but make sure not to damage any other parts of the filter system when doing so.

You’ll need to replace this filter assembly every six to eight months, and you can find a replacement here.

The manufacturer also offers several replacement filters intended for more specific kinds of particles:

• 4-stage Smoke Remover Filter: The manufacturer advertises this filter to provide additional protection against dust, smoke particles, pollen, and pet dander. You can buy this filter here.
• 3-Stage Toxin Absorber: The manufacturer advertises this filter to cut down on odors from smoke and smog, as well as volatile organic compounds (VOCs) that cigarettes, cleaning products, or paint and glue can emit. You can buy this filter here.
• 3-Stage Pet Allergy Filter: This filter is designed to better trap pet dander and cut down on pet odors. You can buy this filter here.