Air compressors are known to account for a big portion of electricity consumption, especially when they are poorly controlled. In a company operating with three high pressure compressors in parallel, only two of which were connected through a sequencer to optimize their load/unload patterns. The third compressor was operating without the sequencer, and had frequent starts. Connecting the third compressor to the sequencer shall harmonize the operation of the three compressors, and save on energy consumption.