Depends on the outside temps and if you are parked directly in the sun. Are you closing windows on the front or sunny side of the RV during peak sun?
RV air conditioners can pump a lot of cold air, but your RV body and windows are not very efficient.
Personally, I'd want at least two 13,500 btu A/Cs or one 15k and one 13.5K. But... the whole idea behind the Intent is to de-content a Class A into a much lower price point. Larger A/Cs would take 50 amp service and a 5,500w genset. Those things do not fit the "de-content" purpose.
On 95 degree days my 50-amp RV with 2-15k heat pumps has a hard time keeping up without getting a very early start on max A/C and closed window shades on the Sunny sides of the coach.
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2017 Winnebago Adventurer 37F
2016 Lincoln MKX Toad
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