"So the watts are 120 volts * 13.5 * 0.7PF = 1134 watts. BUT. The generator has to supply the total volt-ampers or 1600 VA"
You are right that roof to a/c uses a lot of power
But your numbers are low
120*13.5= 1620 . 1620/0.7 =2314va
A poor pf means it uses more power not less
It uses 2314 va to do 1620w of work
Some people have talked about using mini splits
Maybe one 'on here' has done it
There are several on you tube who have done it with 'small trailers'
But they don't appear to be members here
And i have not seen it done on a larger RV
It seems the logistics of the floor plan and cabinets, bed etc prevents the efficient implemention doing that
