Ultra-quiet air purifier for large spaces: recommended for spaces between 650 and 1100 m² Allergy protection with true HEPA filter: captures up to 99.97% of particles down to 0.3 microns, including allergens such as pollen, dust, pet dander and smoke Cold/Flu Ready: keep the air even cleaner during peak season with the Aera+ regimen, proven to reduce the spread of influenza A by 99.97% in independent lab tests. Eliminates odors: The carbon air filter actively removes odors and traps volatile organic compounds (VOCs) such as cleaning agents AeraSmart™ sensor monitors air quality and automatically adjusts fan speed to keep the air clean Built for long-term use with a 5-year warranty.