Then the big question is – what type of room air conditioner do you need? The number of choices may surprise you: window air conditioners, thru-the-wall air conditioners, ductless split systems, packaged terminal units and portable air conditioners. Today’s air conditioners are durable and high-performing, yet quiet. They come in various sizes with many convenience features, including trendy color panels to match your room. Start here to learn the basics about air conditioners designed to keep you cool when the weather gets hot.