Driving with the generator on

4K-Ranch wrote:
Might run both.

We have only had to do that once - never while going down the road - while parked with the V10 idling and the Onan running during August when it was hotter than blazes in the Texas panhandle. The DW turned all red when boondock rockhunting in the middle of the day -> got her back into our motorhome and fired up both the dash and roof air conditioning systems to cool the whole rig down in a hurry.

The later model Ford dash air con systems in their V10 chassis are superb. Ours cools the entire coach area (only a 24 foot Class C) in fine order, but our worst situation has only been while driving in the low-humidity 90's in Death Valley in March and around a high humidity 100 in the Deep South during August. With both A/C systems running we could probably handle any hot temps in North America, if not the Earth, in our relatively small interior volume rig.

FWIW, we have run both the propane furnace and roof air at the same time once or twice in very rare situations in the Deep South in August: Extreme humidity during only moderate (low 80's) warm temperatures. We needed the roof air full blast to remove humidity and the furnace full blast to keep from freezing. We wound up with 70 degree dry air in the interior -> kindof an emergency situation dehumidifier. You gotta love these modern self contained RVs that can handle a large variety of expected and unexpected fun situations!