Vent fans and a/c at the same time
At home we find it unnecessary in summer to run the het pumps on the own stairs level usually. We have a huge vaulted ceilign on one side and the cold a/c air sinks down, and sometimes makes it really...
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The only advantage I've ever found to run the Exhaust fans in the way you are talking about is when we are initially cooling down the inside of the coach and it is cooler outside than it is inside the coach. It is a rare situation because it also has to be hotter outside than what I want the inside of the coach to get down to eventually. for example 92 inside coach, 85 outside and I want the inside of the coach to be 78. run fans for a few minutes, then start up AC's.
