I think it also has to be said that WHERE you are RV'ing makes a BIG difference how well your AC can keep your RV cool.
For years I only RV'ed in the Midwest and had no problem keeping the coach cool in the summer no matter how hot it got.
THEN I went to Florida. The intensity of the sun in the South is just incredible. Quite frankly I was shocked that my ac could not keep it cool inside the RV without a LOT of help from me. It was a big learning curve for me the first time I decided to stay in Florida in the summer.
It's just part of learning the ins and outs of RV'ing in the Southern heat.
Why do you think the Snowbirds beat feet back up North before summer hits? :B:W