During the winter, my office gets a little cold. I have a unit (essentially a space heater) that heats the area around it to help keep me warm.
Now that it's summer, I realize the unit also has a cool setting. I don't understand how this can work. It takes energy from the wall, and removes energy from the air. That energy has to go somewhere, doesn't it? Where does that energy go if not to the surrounding air?
Here's a picture of the unit. It's model number is 02044. Extensive investigation (i.e. shaking and listening) show no signs of water inside. Apparently it was recalled in 2008 for starting fires. Hopefully this is a newer model? :)