Air compressor

An air compressor, comprising:

• a compression assembly including a piston and a cylinder, the piston being configured to reciprocate in the cylinder to produce compressed air;
• an electric motor including a motor shaft extending along a first direction;
• a crankcase accommodating the compression assembly and having an inner inlet to allow outside air to be drawn;
• a filter located in the crankcase and covering the inner inlet from an outside of the crankcase in the first direction;
• a filter cover having an outer inlet and covering the filter from an outside of the filter in the first direction;
• and
• a dust cover covering the filter cover from an outside of the filter cover in the first direction, covering the outer inlet, and including an outer circumferential portion, the outer circumferential portion and the filter cover having a space to draw the outside air radially inward between the outer circumferential portion and the filter cover.