So someone near me is selling one of these units. It shows 10kw heat output and 38k BTU cooling. I can likely get it for about $250. Is it worth it? I would use it out here in the west texas heat for events and such so it will get used, but I don't know how good these units are. If it's not working and needs a charge, I'll have to convert it as the tag calls for 16.1lb of R-22. Any thoughts on these units? Really just trying to get people's impression of them.