Clean air made easy. Introducing the BISSELL® air400. A reliable, holistic approach to indoor air care. Designed for performance from the inside out. Equipped with 3-stages of filtration to capture airborne particles and odors, CirQulate System for set it and forget it convenience, and an Air Quality Feedback Indicator that numerically identifies your homes air quality in real-time. It's clean air you can count on! It also has a large fan and digital 20,000-hour DC motor, that together exchange the air in a 400 sq. ft. room three times per hour when on max mode. Life happens - kids, pets, odors, allergens, dust, and beyond. Let us worry about cleaning the unseen while you rest assured that your family is breathing easy, clean air.