And Two, it’s more sensitive to filter life than Various other purifiers: We’ve measured reasonably substantial fall-offs when screening 12 months-aged filters. Blueair endorses changing the filter “just about every 6 months or so,” and it’s best to stay with that agenda. ฝุ่นละออง, เชื้อรา, ละอองเกสร และแบคทีเรีย CADR (clean up air waiting for link from Social Network Posts (4)