There are a number of different sorts of portable mini air compressor that exist that vary in size and strength. The one you purchase will be decided by the tools you will use. Look at the power requirements of the tools you will be using and make certain you buy a model that can run the most powerful mini compressor you own.
You will need to use somewhat more power than you really need to make certain you will have enough power for any job.
One of the most important considerations when operating a compressor is safety. Make sure you wear safety goggles while you work any tool, along with protective clothing, including long pants, long sleeved shirts and safety shoes such as work boots or strong, not flimsy sneakers.
The most frequently used portable air compressor would be the portable rotary screw compressor. They are available from 65 to 1600 cubic feet per minute, with a pressure rating from 100 to 350 psi (pounds per square inch). Figure out what types of tools you use. A professional contractor, for example, would probably want 185 CFM, so that he could work two power tools simultaneously and can use it for both light and heavy duty tools.
How To Pick the Right Mini Air Compressor For You