The Honeywell HCM6009 is a high output console humidifier which comes with a unique Air Washing system to "wash the air as it humidifies". The wicking filter in the humidifier includes a specially formulated pre-filter which helps capture dust, dirt and pollen while freshening the air. The HCM6009 is a whole house humidifier with an output of 9.0 gallons per day. The humidifier is capable of humidifying up to 2300 square feet and running up to 3 nights or 25 hours without a refill.