Broan™ ventilation fans allow your home to exhale, eliminating humidity, odor and airborne particulates from your bathrooms, closets, mud room, laundry, work out space and more. Ventilation fans improve indoor air quality by venting moist air quickly outside, which helps to control mold and mildew growth. Broan bath fans eliminate odor, humidity, and other air-borne pollutants that affect indoor air quality.