how do i choose an air compressor?

i dont want to spend too much, but i dont want to spend too little and not be able to make good use of it.

what am i looking for? i want to use it for various pneumatic autmotive tools.

 

Its really going to depend upon what type of tools you plan on using and how often. Air drills, sanders, and cutters use up a large volume of air very quickly, so if you are using these tools heavily, make sure that you get a compressor that has a high CFM rating at the psi level you wish to run. About 5yrs ago, I bought a Wally's special that included basic air tools for about $200. I don't remember the specifics on it, but it is a little under-rated for what I do with it in my shop. For the price, I couldn't resist. Even sporadic uses of my air ratchet will get the motor hot from constant cycles. Also, make sure that you get a decent air line to go between the compressor and the tool. Too small (3/8) and you won't get the volume. I bumped up to 1/2 and it made a big difference on my impact and air chisel.

 

it is still hard to say what you would need. i spent a bit over $500 on a compressor that will work for what i need but it is not very portable and runs on 220vac. i have know someone that spent nearly $200 a compressor and it sucked and would not kick on until it was lower than it should be when it kicks on.