Abstract: A MULTIFUNCTION COOLER is disclosed that permits a single portable cooler to simultaneously operate as a conventional portable refrigeration device, a personal air conditioner, and a portable air inflation device. The disclosed cooler incorporates an air injection port that permits warm air external to the cooler to be forced through ice or other coolant material inside the cooler. The air injection is facilitated by an electric air blower or other fan apparatus which vents air from within the coldest portions of the interior of the cooler confines to an exhaust port which may be used as a source of air conditioning or alternatively as an air inflation device.