Are Fresh Air purifiers quiet?
Fresh Air purifiers make about the same amount of noise as the average computer fan, much less than a micro-wave or air conditioner, and slightly more than a toaster. The purifiers use a quiet five-speed fan. Similar to a computer fan, this pulls enough air through the air purification chamber at a rate that creates optimum levels of purification. On low speed Fresh Air purifiers are quiet enough for you to have to lean down and stick your ear within inches to even be able to hear fan running. Even then, most of the sound would be the slight whoosh of air passing through the air purifier.
