Ford Falcon: Broken air-conditioning

A/C compressors mostly fail because of a lack of lubricant through a loss of refrigerant gas in the system. The gas carries the   lubricant that keeps the compressor and other system components alive. I can't recommend an alternative system that you could turn to for your car, instead I would have the system checked for leaks that might be causing a loss of refrigerant, make sure the system is fully gassed, and check it at least annually.