Certain embodiments of the present disclosure describe a surface cleaning system, particularly for use in cleaning carpets. The surface cleaning system includes an external tank, a connection line, and a wand assembly. The wand assembly is detachably connected to the connection line at a handle portion. A vacuum motor is included on the wand assembly to provide suction when the wand assembly is detached from the connection line. A wand head included on the wand assembly includes a suction tube attached to the vacuum motor and an internal wand head cavity that may hold a brush. An internal tank adjacent the internal wand head cavity may hold liquid and debris that is picked up by the suction supplied to the suction tube and/or the wand head cavity. Liquid from the internal tank may be pumped or suctioned to the external tanks and discharged through an outlet line.
