Envion Humidiheat Electric Heater and Humidifier 3-in-1 Heater, Humidifier and Air Washer, 90IP20HH01-W HEATS &amp; HUMIDIFIES while simultaneously cleaning the air in your home CLEANS the air in medium to large size rooms up to 3x in one hour FEATURES and auto-shut-off and low-water sensor CLEANABLE filter elinimates need for costly filter replacement. OUTPUTS 2.2 GALLONS per 24 hours and saves skin from the damaging effects of dry heat