I can say with confidence that you can only run one AC at a time on 30 amp service. We have the exact same coach, and while we choose 50 amp service whenever it's available, it's rare that we really *need* both ac's running at the same time, particularly at night. Both AC's share the same ducting system so if you have the fan running on one, and the AC on the other, you should get very good air circulation and keep the entire coach comfortable.
Mike & Suz
2014 Georgetown 351
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Buck & Patsy, the boston-mix guard dogs