Airthings Renew, designed by the leader in home air quality monitoring, proves that a smart and effective air purifier can also be beautiful. Enjoy peaceful sleep and peace of mind with the 4-stage HEPA-13 cleaning system that removes particulates, gasses, and odors from your air. On Silent mode, it’s so quiet you’ll hardly know it’s there. Set to Auto mode and take clean air for granted - the laser-based particulate sensor intelligently adjusts the fan speed according to the actual air quality, keeping your air clean and healthy. Ideal for bedrooms but effective in any room up to 525 sq ft (cleans the air in 30 minutes in a space up to 525 sq ft on boost mode). It's portable so use the integrated strap handle to easily move Renew where you need it.