We tested nine of the best portable air conditioners in a humid Florida home—here are the models that impressed us the most.

Rather, our testing reinforced the established idea that you really do have to match the AC, of whatever type, to the room size. Using Energy Star’s chart ... air conditioners from different brands.

Seven additional central air brands earned favorable reliability scores. But the data—based on responses from 13,306 members who purchased central AC or ductless mini-split units between 2009 ...