If you drop the rectangular plastic grid on the ceiling that holds the AC's filter, you can see quite a bit of the interior of the unit. You may have to also remove the plastic frame from the ceiling and maybe remove an access plate or two, but I found a sticker in mine that has model number, etc. It was partly covered by an access plate so it appears very easy to find and expose.
I didn't pull it apart to see if the BTU rating is on it, but I would expect that yours would be fairly small. Most likely 13.5K or 15K. In either case, the current draw to run them is about the same.
Those of us that have the 2KW Honda or Yamaha generators will tell you that 2KW is not enough to start the typical AC unit in a TT. (It's the surge to get the AC running that is the problem, not the wattage necessary to keep it going.) Yamaha now sells a 2.4 KW unit that is supposed to be able to get an RV AC unit running without going into overload and shutting down.
If I were to do it over again, I'd sure look into a slightly larger generator. The choices at the moment are the Yamaha 2.4 KW for around $1,200 or the Honda 3KW for $1,995.
I won't recommend any other generators except Honda and Yamaha due to the noise factor. They are the quietest generators available at 59 db at max. load. At 1/4 load they are rated between 49 and 53 db. All the other gennies I looked at were between 65 and 69 db and they didn't spec whether that was 1/4 load or max load. I suspect they are vague about their ratings because they become too loud at max load. Very few things can be more irritating in camp than an loud generator.
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