We have a 24 foot C and travel in California, Arizona, New Mexico and Texas in the summer heat, so during the morning we use the dash air and hang a curtain from the bunk, it is just a nice shower curtain after we stop for lunch at a rest area or off road we turn the generator on and the roof air and that stays on until we stop for the evening at a camp ground with hook ups, I do keep an eye out for the gas, since at 1/4 tank full the gen shuts down so I have a mark on the gauge when the generator quits and will fill up before, so far tis works OK for us, another thing we only travel at 55 MPH since travelling at higher speeds the engine runs a lot hotter and we tow a toad.
navegator