And two, it’s much more delicate to filter everyday living than some other purifiers: We’ve measured relatively sizeable fall-offs when testing 12 months-old filters. Blueair recommends replacing the filter “every single six months or so,” and it’s best to stay with that routine. มีขนาดกะทัดรัด พกพาไปใช้งานได้อย่างสะดวกในทุกที่ CADR (clean up air shipping https://www.mannature.com