As Noted in our guideline to best-rated quiet air purifiers, we propose cross-checking claimed decibel amounts with purchaser groups like Peaceful Mark, a United kingdom-centered unbiased international certification software that identifies the quietest items. มีการรับประกันและบรการหลังการขายที่เชื่อมั่น In combination with a HEPA filter, the Air Professional as well as Mini+ utilize the Successfully Submitted (Awaiting Approval)