And Two, it’s a lot more sensitive to filter existence than Various other purifiers: We’ve calculated relatively important fall-offs when screening 12 months-outdated filters. Blueair suggests replacing the filter “just about every 6 months or so,” and it’s best to persist with that plan. จัดส่งฟรี! เมื่อสั่งซื้อเครื่องกรองอากาศทุกรุ่น CADR (clear air shipping waiting for link from Social Network Posts (36)