Those are not impressive BTU numbers. A lot will depend on you. Myself, I like to be able to hang meat in my truck in Arizona in the summer. I plan on getting a Mantis myself. 32000 BTU heat and cool. I know a lot of people run the Tri Pac but I believe it is 13000 Cool and 7500 Heat. Still not my kind of numbers. Lots of Thermo King places for service though. I will take my chances on the servicing with the Mantis.