Honeywell HPA830W Designer Series HEPA Air Purifier helps provide cleaner, fresher air in medium to large rooms. Along with designer styling, it features certified HEPA Filtration, which helps capture up to 99.97% of the following microscopic airborne allergens and particles: dust, pollen, pet dander, dust mite debris and smoke.* This Honeywell air purifier is independently tested and AHAM Verifide to circulate and filter room air up to 4.8x per hour in a 190 sq. ft. room.**