Abstract: A carpet wheel is provided for a rotary cleaning apparatus of the type having an electric motor in a housing, a brush member attached to a drive shaft of the motor, a holding tank for a liquid cleaning fluid and a handle extending at an angle upwardly from the holding tank. The carpet wheel comprises a circular shaped base member. Elements are on the base member in a pattern, for forming a plurality of radially extending grooves. The groove forming elements can be releasably positioned against the underside of the brush member, to be rotated thereabout. A plurality of balls are also provided. A structure is for rotatively carrying the balls in the base member, in spaced apart radially extending locations under every other groove, so that the balls will contact and roll upon a carpet.