This air purifier has a three-stage filter system comprised of a Mesh Dust pre-filter and a HEPA filter with a Virgin Carbon layer for minimizing odors.
As per the manufacturer, you'll need to clean the pre-filter under water or with a vacuum whenever you notice it getting dirty, though no specific maintenance interval is specified. On the upside, you'll be alerted when the pre-filter needs to be cleaned or replaced, as the air quality indicator ring will flash red, and the central display will show a 'Check Dust Filters' message. If you wash the pre-filter under water, let it dry for at least 12 hours before reinstalling it. The manufacturer also recommends that you vacuum or dust off the outside of the HEPA filter every two months.
The HEPA filter has a manufacturer-estimated lifespan of five years, though that can vary depending on how often and where you use this air purifier. In any case, this is a significantly longer service life than the filters found in most other air purifiers, like the Levoit Core 600S, which needs to have its filter changed every year or so. You can find a replacement here.
This air purifier also features a replaceable cartridge that emits a detergent-like scent to mask foul odors. You can adjust the intensity of this scent by twisting the cartridge dial, as explained in the user manual here. This feature is very similar in concept to the system found in newer Shark vacuum cleaners like the Shark Stratos Cordless. As with those vacuums, this scent can quickly become cloying, especially if you crank the dial to its maximum intensity for hours. The manufacturer recommends replacing the scent cartridge every three months; you can buy a replacement here.
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