Roadtrek stopped using Fedders air conditioners a few years ago. I think 2003 models had the Fedders. My 2004 has a Dometic Duo-Therm Cool Cat Heat Pump Air Conditioner.
Could that be the air conditioner change you heard about?
Not sure where I read that. I have a beef with the RT on the loss of head room with the AC. PW is going with a low profile Carrier total is 10" and normal carrier is 15.5 inch. You know what the Lexor looks like outside and the roof just extends 2.5 inch inside.