Abstract: A cleaning system and method for cleaning window glass or another smooth surface utilizes a first reservoir, a second reservoir, a first battery-operated pump for delivering liquid medium from the first reservoir onto the surface to be cleaned and a second battery-operated pump for drawing spent liquid medium from the surface for transport to the second reservoir. A hand-held wand includes a head having a first face through which the liquid medium is dispensed onto the surface and a second face through which spent liquid medium is drawn from the surface. In addition, a switch is mounted on the wand which permits the user to selectively dispense the liquid medium through the wand or draw the spent liquid medium from the surface, and the reservoirs and pumps are mounted upon a backpack frame enabling these components of the system to be carried upon the back of a user.