This is a high efficiency compressor designed for demanding industrial applications. The Trane COM11196 (3.5 ton, 230V, single-phase, R-22 scroll compressor) typically costs ==between $2,100 and $2,450== for the part alone. I am willing to give this up for a huge discount as it is open box and I simply don't have a use for it. Survey says, $600 (That is over a 70% discount that you won't find anywhere else in the market). What a steal! Brand new, never installed, absolutely nothing wrong with it besides open box.