Well Biggen, All I can give you is the CFM's as a guide. Check with Sears, Home Depot, Lowes before venturing off to more commercial sources. If you plan to start a bussiness I would look to Speed Air, Binks, DeVilbiss, Quincy just to name a few as they make some of the best. Do you have a Grangers in your area? Do your homework, compare. Good luck