PROBLEM TO BE SOLVED: To easily handle a heavy humidification tank, with respect to an air cleaner for cleaning large space by using a humidifying element including electrolytic water.SOLUTION: In an air cleaner, blower means 4 and air cleaning means 5 are disposed in a body case 1, and the air cleaning means 5 is composed of a tray 6, a water supply tank 7 for supplying water to the tray 6, an electrolysis unit 8, a filter portion 9, and a drain tank 20 for storing the water in the tray 6. The air sucked from an inlet port 2 by the blower means 4 is distributed to an outlet port 3 through the filter portion 9. A volume of the water supply tank 7 is more than a volume of the drain tank 20, and the water supply tank 7 has a first grip portion 21 and a second grip portion 22, so that a water supply work can be easily performed by carrying the water supply tank 7 not by one hand, but by both hands at the first grip portion 21 and the second grip portion 22.
