I am able to use the refrigeration version successfully. I have used 3.55 and 3.61 for new construction and energy efficiency measure research/analysis. There are some work arounds and lessons learned that one learns from using it after some time--some things are not easily modeled, some can't be modeled, etc. If you have specific problems with a model, please post them and I can try to help you with the specifics.

Christopher Rogers