Air conditioner sound tracks: Getting to the root cause of a noisy AC unit
Unless your air conditioning unit is from the early 1980s and prior, it should not be making loud noises during operation. In fact, most new AC units are designed to operate in an almost silent manner. These units use insulation mechanisms to dampen sound, as well as compressors that can vary their operational speed when generating cool air.
If you do notice loud noises whenever your unit is running, it is most likely caused by a particular problem with the AC.