Hi Mailee,
any compressor should be capable of building up 90psi (min for a framing nailer), but you wont be able to fire more than one or two nails if your lucky, unless it has a substantial tank ( at least fifty litres ).
i have two paslodes and two bostitch framing nailers (AIR).
i run the bostitch off a hundred litre, 3 hp, belt driven compressor with no problem at all. it is on wheels and can be lifted in and out of the van easily enough, or run up two planks. the reason i have these air nailers is that they are a lot more economical to run, you dont need to buy gas.
the problem with smaller compressors of 24 liters or less is that they need to run a lot more frequently to keep the pressure built up in theri small tanks, thus leading to overheating and automatic cut-outs. you really need to spend a serious amount of money for an industrial rated model like a Rand that wont over heat as much.
one thing worth mentioning is that oil free are a diy only job!!
the paslodes are at times a god-send. no hose take anywhere sort of things.
they can be a bit temperamental if you dont keep them clean,oiled and use fresh gas.
all said and done if your only using the framer now and again for a few nails you can pick up a decent 24 litre compressor on Ebay for around £35 - £ 40 plus £25 delivery, from a german supplier , search under air compressor and then buisness and industrial. they are exactly the same as the sealy model that sells for three times the price, red in colour,2hp direct drive and oiled. sorry mate i dont know how to post a link. the supplier is called werkzeuge-online. check it out i havnt had any problems with mine running a 15 gauge finish nailer.
hope this long winded rant helps !!
:wink: