I have a Compair air dryer that is in very good condition. Being a Refrigeration mechanic, I have checked the compressor, refrigerant charge, cleaned the condenser and checked that the gage is working... its M#k55A, R134a and 115V. I think it's rated for about 170CFM but I couldn't find the exact specs for this model. I am asking 400$ its posted on Kijijijijijijijijiji (search for compair or else you'll see a lot of close dryers...lol)