Ideal for pet owners and families with babies. As quiet as 25dB in low mode. Noise Level:25-47dB. Optimal Coverage Area: 247 sq.ft. Protect Your Family. With a CADR of 112CFM, it can cleans an area of 252 sq.ft in 18mins, 420 sq.ft in 30 mins, 840 sq.ft in 60 mins.