Honeywell indoor air purifier having three-stage filtration combined with Patented HiSiv with unique honeycomb design & HEPA H11 filter removes the pollutants with 99% accuracy. It has smooth touch control panel & low power consumption at high speed make it one of best in this category. Washable Prefilter removes larger dust, pet hair/dander, soil etc. Three stage Advance filtration system removes microscopic allergens, PM2.5, pollens, Toxic gases, VOCs, formaldehyde &odour in the room. It has low noise compared to other filters, ozone free & has the filter life of 3000+ hours if used for 8 hours a day.