Create a healthy home with De’Longhi’s line of Air Purifiers. All De’Longhi air purifiers feature the unique AQS (Air Quality Sensors) technology. This intuitive system’s sensors continuously monitor the air quality, providing you with the visual assurance to “see the clean air” through color changing LEDs. The De’Longhi AC150 air purifier model features 5 layers of filtration, trapping allergens, asthma triggers, odors, chemicals and even bacteria and viruses. With ultra low noise levels and easy to use display features, a De’Longhi Air Purifier is perfect for any room in the house, including living rooms and bedrooms. The De’Longhi AC150 air purifier model is suitable for rooms up to 150 sq ft.