And two, it’s more sensitive to filter lifestyle than Several other purifiers: We’ve measured quite significant fall-offs when tests year-aged filters. Blueair recommends replacing the filter “each and every 6 months or so,” and it’s best to stay with that agenda. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น The Blue Pure 211+ aced our tests, https://mannatureairpurifier.com/