Is that hissing noise the sound of money going up in smoke?

摘要

One thing that never fails to amaze Greg Gillespie is the amount of times he walks into a manufacturing or processing plant and hears hissing. It immediately tells him that they are running an air compressor or a bank of air compressors. It also tells him that the company is throwing money down the drain. That hissing sound is either one, or a series of leaks, coming from the compressed air system. Gillespie, who is the national sales manager for air compressor manufacturer ELGi, said that in some cases companies are literally throwing thousands of dollars down the drain every year. Not only that, but when he hears that tell-tale sign of hissing, he knows that doesn't include the ones he can't hear.