And Two, it’s a lot more delicate to filter lifetime than some other purifiers: We’ve measured reasonably sizeable drop-offs when screening yr-outdated filters. Blueair recommends replacing the filter “each six months or so,” and it’s best to persist with that routine. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท The filter on the bottom has become operate Successfully Submitted (Awaiting Approval)