เคล็ดลับและบำรุงรักษาของใช้ในบ้าน ดูแลเครื่องใช้ไฟฟ้า Matching Your air purifier for your room sq. footage and type is essential for it to operate at its best. A typical general guideline is to decide on an air purifier having a CADR which is at the least two-thirds the dimensions on the area. The Shark NeverChange waiting for link from Social Network Posts (13)