And two, it’s more delicate to filter everyday living than Another purifiers: We’ve calculated pretty substantial fall-offs when screening 12 months-old filters. Blueair recommends replacing the filter “each six months or so,” and it’s best to stick with that plan. กิจกรรมเพื่อสาธารณะประโยชน์ของบริษัท Two Coway filters that we obtained in February 2021 https://www.mannature.com/products/detail/airpurifier