Nice description. I’m not sure why Appion makes such a big deal about the crankcase being isolated from the refrigerant. The Yellow Jacket units have had that since they started with their line of recovery machines. I do like the fact that the Appion is serviceable and it is considerably less money than Yellow Jacket equivalent twin unit. Unfortunately, like most things these days, Appion is made with Chinese parts. I would gladly spend twice the price to purchase a European built or U.S. built recovery unit but the labour costs keep us feeding the Chinese economy. Thanks again