air conditioner and generator while traveling

I have used the built-in ONAN and house AC many times while driving during hot weather. It works like a charm. (When I owned a Class C.)

Use your dash air when driving. The AC in the house won't keep the cab cool enough when you're driving.

Unless there are people in the back, there is no reason to run the house air. Even to "cool it down before you get there" - the AC should cool down your RV within 15 minutes.

Steve

Nice post jls.
My friends always completely kill their travel trailers while toying.
Is that unnecessary assuming they have the same basic genny and type of AC units as a class C?

Depending on how hot it is, I generally use just the dash A/C, but as the day wears on and it gets hotter, I start the generator so the house is cool when I arrive at a park.

The Onan generators, as a safety device during a power outage, are designed for 10,000 hours of operation stopping only occasionally for oil, filter, and water checks. They are the same generators sold exclusively for that function. Meaning that they don't make a cheap one for RVs (or so my reading has lead me to believe).

The biggest issue with the generators in RVs is that they often don't get used enough...not enough exercise. So, RUN IT. And do regular maintenance.

I think on fuel efficiency the dash air would be the least impact on fuel mileage.

As far as max cooling you should use both.

Yes in high to extreme temperatures and the engine temperature gauge is rising you can reduce the heat load from the chassis engine by turning off the dash air. Generator/house air should have no effect on or off so you may as well run as needed.

It WAS here earlier today.....with some replies.
Strange.

IF the dash air keeps it cool enough for you, use that and don't obsess. That is what it is made for.

IF....you need more cooling going down the road, running the gen and house air should be fine too. A lot of folks do that.