[john hall]

At work, we store about 200 gallons of air using a rotary compressor. It seems to help if we hit 3-4 air grinders at once. We regulate the air coming in the building at 100PSI. This way the compressor kicks on before pressure drops, doesn't get so aggravating running air grinders. Regarding high air pressure, maybe higher pressure is better if you are hammering big rusty bolts on farm and construction equipment to get a little more power if you time it right when the compressor kicks off. One of our customers is an auto factory. During the recession they dropped the plant air by about 10lbs, save $50k a year in electricity. There were a few minor tweaks on some of the equipment, no major retro-fits needed though.