Sorry for the confusion. The no A/C refers to the rooftop A/C above the rear bed, not the Sprinter HVAC system. Winnebago offers the rooftop A/C as an option, or a Maxaair fan instead. I chose the fan when I bought it.
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My apps: https://apps.apple.com/us/developer/william-modesitt/id292400312?mt=1