Docking unit and surface cleaning apparatus

A surface cleaner and floor standing unit, the surface cleaner comprising an air treatment chamber and a dirt collection region, the air treatment chamber comprising an air treatment chamber air inlet, a closure flap associated with the air treatment chamber air inlet and an air treatment chamber air outlet, the dirt collection region collects dirt during a cleaning mode of operation of the surface cleaner, the floor standing unit comprising a dirt collection region which, in a surface cleaner emptying mode of operation when the surface cleaning apparatus is docked with the floor standing unit, receives dirt collected by the surface cleaner during the cleaning mode of operation of the surface cleaner, the surface cleaner having an openable door which, in the surface cleaner emptying mode of operation, is open whereby the dirt collected in the dirt collection region of the surface cleaner is transferrable to the dirt collection region of the floor standing unit, wherein an electromechanical actuator is drivingly connected to the closure flap.