Abstract: A refrigerant charging system comprising a hollow manifold having a first end and a second end and a central region therebetween; a suction port adjacent to the first end with a first line couplable to the suction side of a compressor of an air conditioner; a suction valve adjacent to the suction port and positionable between a closed orientation and an open orientation; a low pressure gage adjacent to the suction port; a discharge port adjacent to the second end with a second line couplable to the compressor of an air conditioner; a discharge valve adjacent to the discharge port and positionable between a closed orientation and an open orientation; a high pressure gage adjacent to the discharge port; a refrigerant port with a third line for coupling the central region of the manifold and to a refurbishing tank; a vacuum port with a fourth line located between the refrigerant port and the first end for coupling the manifold and a vacuum pump.