Abstract: An apparatus for cleaning air filters by a combination of vibration, air pressure, and suction. A support member includes a first inclined wall sloped more steeply than a second inclined wall, providing generally V-shaped supporting surfaces which cause the filter being cleaned to rotate as it is vibrated. The vibration of the filter also loosens trapped impurities therefrom, and this vibration is enhanced by resiliently suspending the support member from a housing. The loosened impurities fall down the slopes of the inclined walls and are removed by suction provided in a channel extending lengthwise along the bottom of the support member. An exhaust blower is connected to a port in the suction channel to apply suction to the filler and to remove loosened impurities. The exhaust blower is also connected to an inner suction tube, which applies suction to an inner periphery of the air filter.