Cherryville Chuck· Retired Moderator
I don't worry about air leaks that small. If I unplug my tools from mine it will stay up for days. With a tool connected maybe overnight before it's down to a few psi. And it depends on which tool. Some leak more than others. It takes quite a bit of air to run a 1/2" impact. I have a twin cylinder compressor with a big Baldor 3hp 220volt motor driving it and it won't keep up to heavy use. If you want heavy use out of an impact you'd probably be better to go electric.