🌟 Clear the air, elevate your space! Uses less energy than a standard lightbulb—eco-friendly and cost-effective! Control your air quality with Alexa and our intuitive app. Enjoy peace and quiet with noise levels as low as 23 dB. Experience cleaner air in just 30 minutes! HEPASilent technology captures 99.97% of airborne pollutants. 1858 sqft coverage 23-50 dB noise level 99.97% particle removal The Blueair Pure 311i Max is a high-performance air purifier designed for medium rooms, effectively cleaning up to 1,858 square feet in just one hour. Featuring HEPASilent technology, it operates quietly while removing 99.97% of airborne particles, including allergens and odors. With smart features like app control and Alexa compatibility, this purifier is both efficient and user-friendly, making it a must-have for health-conscious households.