What makes one packaged heat pump brand better than the other? A Heil Phad with a 12 seer and 7.2 heat compared to a Trane XL1200 with a 12 seer and 7.2 heat is considerably less expensive. The Heil has a Scroll compressor while the Trane has their own Duration compressor. The only difference I see is that the Trane has a louvered panel protecting the coils while the Heil does not. I would like someone to explain any other differences in the 2 units resulting in the Trane being more expensive other than name recognition.