Germ free cool mist humidifier, 99.99% germ free mist, patented proven germicidal chamber technology kills bacteria, mold & spores in water, quietcare technology up to 30% quieter, automatic moisture balance system, easy to carry, fill & clean, for medium size rooms, 2 gallon output/day, runs up to 24 hours per filling, 3 year limited warranty. Replacement Filter T.V. 661-793, Mfg# HAC-504AW