How can I disperse the engine heat when I stop from flowing into the coach area. I put roof exhaust fan on and start air asap. It still takes some time for this heat to go. Curtains don't do the trick...
I open the hood and I place a box fan to blow air under the RV (use the front wheel well).
But realistically you have about 1000 pounds of metal to cool down between the engine and transmission. That works out to about 9000 btu's to dissipate. It takes some time.