A blower having a motor mount, in particular for a blower of an air-conditioning system of a motor vehicle, the blower having a blower housing, in which an electric motor is held with the aid of the motor mount, an impeller being furthermore drivably disposed in the blower housing on a shaft of the electric motor, the impeller having a side oriented toward the electric motor, and the motor mount having a first surface oriented toward the impeller, a gap being formed between the impeller and the first surface, the first surface having a plurality of first projecting elements, which protect on the outer circumference of the surface in the direction of the impeller.