This Venta humidifier and purifier in 1 unit that does not require filters to change. This unit will evaporate water daily to humidify the air in a dry heated room. Water is the filter. Fresh every day. Cleans with a consistently high level of effectiveness, as water doesn't clog the way filter pads do. Visible purifying performance. Pure water evaporates, leaving dirt trapped in the tank like salt in the sea.

Honeywell HydraPure Air Washer - 2-in-1 Air Purifier & Humidifier. The only air washer that humidifies the air and cleans the air with 99% efficient filtration. Permanent filter captures 99% of airborne particles such as dust, pollen, smoke, pet dander & mold spores. Provides 50% more humidity output than competitive models. Reduces airborne germs such as bacteria and viruses. Odor-Lock Pre-filter helps reduce common household odors.