One of the biggest disadvantages of using roof-mounted solar panels for AC is that it forces you to park the RV in a spot that exposes it to full sunlight for most of the day.
So, you end up trying to cool an RV that wouldn't have been as hot in the first place, if you had parked it in shade.
And many campsites don't even have full sunlight exposure all day.
Very few of the folks capable of running their A/C with solar have enough capacity to run it for more than a few hours per day - which means that they either have to do without A/C for the rest of the day and night, or resort to running a generator.
Is running a generator 18 hours a day (with solar) really that much of an improvement over running it 24 hours a day (without solar)?
