Best small / room air conditioner What makes the best small air conditioner What makes the best room air conditioner (a small air conditioner by defition, as no room we know of are very, very large) different than other “best” air conditioners? For us, it is the combination of several elements:Small spaces (let us say, 200 sq. ft. or less) require a very discreet way of functioning, because by definition, they will be closer to the people that use them. But also because these people might have the need to focus much better : air is cooled down in offices, living rooms, and… bedrooms! Ease-of-use and fast efficiency. Because bunkering in a small room on a summer can be a decision taken in a flash, and only be very temporary (to read a book, or for a nap), small air conditioners and room air conditioners need to be quick to cool down the place. This entails super intuitive on/off commands, and of course, power and efficiency. Lastly, the best room air conditioner has to be portable.