An apparatus (100), for cleaning a surface (102), comprises a handle (126) and a bracket (104), connected to the handle (126). The apparatus (100) further comprises a drum (108), rotatably coupled to the bracket (104) and rotatable about a first axis (110) relative to the bracket (104), a drum motor (130), mounted to the handle (126), and a drum power-transmitting component (132), rotationally coupling the drum motor (130) and the drum (108). The apparatus (100) also comprises a brush motor (114), mounted to the drum (108), and a brush (112), rotatable by the brush motor (114) relative to the drum (108) about a second axis (116), which is parallel to the first axis (110).