I just purchased a new house and it came with a propane powered Goodman GMPN120-5 Unit. I did a bunch of research a few years ago when I had to replace the unit in my old house and the concensus at the time seemed to be that Goodman was not so good. I don't plan to just replace it right away but if it breaks and it's more than a minor issue I may want to just replace it. It's currently 8 years old. In my old house I had purchased a Trane heatpump with a variable speed motor. Every contractor I got an estimate from was brain washed to sell Trane. I know they make a good unit but they must do a good job of keeping you contractors happy also. The question is would I benefit to replace this unit by being more comfortable and paying less in fuel bills or is Goodman not as bad I they say.