Driving with the generator on

I'm from Florida, and most trips, most of the year involve using the air conditioner. I was told way back in 1995, when I bought my first Class C that it was more economical to use the generator to run the roof AC than it was to run the dash AC. I was told that a generator will use around .7 gal per hour. I almost always use the generator for air and not the dash air.

I don't know about your RV, but for ours, running the roof AC will not do jack for people riding in the cab. I know because when we bought our RV the cab AC was broken. We tried just using the roof AC (with generator) but I still sweated my butt off up front. We even bought a little fan to try and blow house air at the driver but it was still miserable up front.

Same thing for heat. Our heater core blew one year just as we pulled into Disney. Mobile tech ran a bypass so we had no cab heat on the way home. Ended up buying an electric space heater to heat the driver's legs on the way home as freezing cold air was coming in at the driver's feet from somewhere.

I can also tell you that if you have passengers in the house the cab air will not be sufficient to keep the house cool.

So - if you're in the South in the summer and you have passengers in the cab and in the house, you will probably be running the generator as you go down the road so that you have AC in the rear.

If you do that you may as well run your fridge on AC, too. No pilot light to burn propane or worry about at gas stations.

Steve