Dometic Performance Deterioration
We aren't quite as far along on the Dometic set-point deterioration on our 2013 as Phil57 is, but our IR gun (and our ice cream) are both showing a progressive deterioration in performance after two-and-a half seasons.
If you can recommend a Dometic dealership (other than a dealer or Camping World, who are both sales-oriented), I'd appreciate it. We are looking longingly at a left-over Anthem, but that is not going to happen.
As an alternative, I am considering a residential upgrade. If can ever figure out how to get at the Dometic unit (how to remove the wooden paneling around it without damaging the adjoining woodwork too badly), and find a make and model replacement that will work, I'll probably spring for that. Also, new (and taller) AGM batteries.
Also, there is the problem Hank pointed out - how to pipe the heat exhaust out of the bus; the Dometic sheds it heat out the back next to the external vents in the slide, and the residential units shed the heat at the front bottom, into the interior.
BTW, don't forget: the bigger inverter needs to also be a pure sine-wave inverter, to prevent motor overheating and shortened operating life of components.