Ken,
Some folks may dog Sears...but I have lots of tools from Sears and I've beatin' the snot out of them over the years and they are still as good as new. Like the other vendors (that charge 5x the price for basically the same thing), they carry a lifetime warranty.
My 5HP, 20 gallon AC is a 2 cylinder oil type single stage system. I bought it in 1985 and it still looks and runs good as new. In fact the only thing I've ever done to it aside from changing the compressor oil every couple years is change the drive belt.
Is your new AC unit an oil type or oil-less? I like the idea of oil-less, but question the long term durability during years of operation. Any inputs?
Thanks, in advance!!!