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I have a Sears 20 gallon horizontal unit with a 3 or 5 horse motor. It's "oil-less" and runs on 110V. Look at the tools you're interested in and they'll list air supply requirements in pressure and CFM. I don't have any airtools yet but will soon. Things like rachets or air hammers are what I'd buy. I also want a benchtop blasting cabinet and they're available in the 90psi/5CFM range which my compressor will supply easily.
If your tools requirements exceed the specs of the compressor, it will be playing a losing and life-shortening game of catch-up while you're using your trying to work.
The oil-less units are typically single stage (they only compress once before the tank) and will probably be fine for the home DIY guy breaking nuts loose and filling tires.
Instead of the mechanical piston and crank found in larger single and multistage compressors mine has a diaphram run by an eccentric cam on the motor's shaft. Sounds like a big vibrator instead of chuffing pump and in two years of occasional use has been a great investment.
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Erwin in Memphis, '88 745t 183,000 miles, '95 855t For Sale
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