And Two, it’s far more sensitive to filter existence than some other purifiers: We’ve measured rather sizeable drop-offs when testing yr-previous filters. Blueair endorses changing the filter “each and every 6 months or so,” and it’s best to stick to that routine. ตัวเครื่องอาจค่อนข้างใหญ่ไปสำหรับผู้ใช้บางท่าน Corbat suggests obtaining air purifiers tested and waiting for link from Social Network Posts (7)