COMPACT COVERAGE: Efficiently cleans small to medium spaces up to 405 sq ft in one hour (CADR 92). Ideal tabletop purifier for homes, apartments, bedrooms, kid's rooms, baby nurseries, living rooms, offices, schools, classrooms, and businesses. TRUE HEPA H14 FILTRATION: Medify Air s HEPA filter material tested to remove 99.9% of particles from O.3 to 0.1 m by Intertek Laboratories, including allergens, odors, VOCs, smoke, wildfire smoke, pollen, pet dander, dust, smog, contaminants, and more down to 0.1 microns in size. Maintains a clean environment. ULTRA QUIET: Choose from 3 fan speeds, with the lowest setting operating virtually silent. Runs at 110 Volts at a maximum noise level of 57 dBA.