Detachable air compressor unit and system

This invention relates to detachable air compressor units and detachable air compressor systems. A detachable air compressor system includes a detachable air compressor unit and a second storage tank. The detachable air compressor unit is portable and includes an air pump powered by a motor and connected to a first storage tank, where the pump, motor, and first storage tank are all connected to a first base. The first storage tank is also attached to a regulator in order to release the compressed air stored inside and to a first coupler to permit the transport of compressed air between the first storage tank and the second storage tank. The detachable air compressor unit can be attached to a second storage tank of a larger size than the first storage tank. The second storage tank includes a second coupler adapted for receiving the first coupler from the first base as well as a second base adapted for coupling with the first base to removably secure the detachable air compressor unit to the second storage tank.