pnichols wrote: "One nice feature of a Class C motorhome built on a Ford chassis with the V10 engine is ... for a fast cool-down in scorching weather one can both run the rooftop A/C using hookups or a generator - while at the same time idling the V10 engine with the cab A/C set on high settings for awhile. We have used both of these air conditioners at times for super cooling under scorching heat conditions. Ford E-Series chassis have cab A/C systems with tremendous capacity - well beyond single rooftop RV units."
Yes. This works well with the Class A F-53 (V-10) Ford chassis too. It's not very efficient but it does work well. You can do the same thing with the chassis heater and the coach FAU. (Forced Air Unit) Closing the AC roof vents (if you have them) in the stateroom also helps cool the main area for day use if you aren't using the stateroom.
Chum lee