This air purifier has a three-stage filter system comprised of a H13-grade HEPA filter with a separate mesh layer, along with an Activated Carbon layer for trapping odors and gases and a Selective Catalytic Oxidisation (SCO) filter with a formaldehyde sensor to trap and destroy formaldehyde particles.

The manufacturer doesn’t issue any maintenance requirements for the filter system. That said, you’ll need to replace the Activated Carbon filter every year, and you can find replacements here. Meanwhile, there’s a slight divergence as far as the H13 HEPA filter is concerned. The user manual for the BP06 recommends changing the filter every ten years, while the filter’s product page lists its lifespan as five years. In any case, replace the filter whenever you notice a downturn in overall device performance. You can find a replacement HEPA filter here.

The Selective Catalytic Oxidisation (SCO) filter isn’t intended to be replaced and is meant to last throughout the device’s lifespan.