Aug 12, 2020 · And as an added bonus, most rooftop AC units can also heat your van in the winter! The Best Rooftop Air Conditioners for Vans Winner: Kingclima Brisk II Rooftop Air Conditioner Kingclima makes some of the best appliances for van life (including one of our favorite 12v refrigerators ), and the Kingclima Brisk II Rooftop Air Conditioner is no exception.