Surface cleaning apparatus

A surface cleaning apparatus, comprising:

• a housing including an upright handle assembly and a base mounted to the upright handle assembly and adapted for movement across a surface to be cleaned, wherein the base comprises a brush chamber and at least one brushroll mounted therein;
• a suction source;
• a suction nozzle assembly provided on the base and defining a suction nozzle in fluid communication with the suction source;
• a fluid delivery system comprising:
• a fluid supply chamber provided on the upright handle assembly and adapted to hold a supply of liquid;
• a fluid dispenser provided on the base in fluid communication with the fluid supply chamber, wherein the fluid dispenser is configured to dispense fluid onto the at least one brushroll;
• a fluid delivery pathway between the fluid supply chamber and the fluid dispenser;
• and
• at least one fluid delivery channel forming a portion of the fluid delivery pathway, the at least one fluid delivery channel extending adjacent to a portion of the suction nozzle assembly;
• and
• an interference wiper provided on the base and adapted to interface with a portion of the at least one brushroll to remove excess liquid from the at least one brushroll.