Combination air compressor and vacuum pumps generate air pressure or vacuum in the same unit. These combination units provide hose connection options for either pressure or vacuum. The compressor generates pressurized air and functions as a power source to connect to and operate air-powered tools and equipment. The vacuum pump generates vacuum, which creates suction, for systems that need to remove air such as packaging and filtration. Diaphragm combination compressor and vacuum pumps are used in applications where corrosive fumes may be present. Rotary vane combination compressor and vacuum pumps create higher volumes of air than diaphragm and piston combination compressor and vacuum pumps.