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Notice how quickly she switches from the whole Earth to her own city and little confort
With an air conditioner or refrigerator the heat has to go somewhere, it does not just disappear.
An air conditioner sucks warm air out of the room and blows cooled air inside, but the hot air has to go somewhere, so it goes outside.
A refrigerator cools the air inside the refrigerator and sends it outside into the room it's in, feel with your hand at the back of the refrigerator. That's why it's often very hot in rooms with a lot of refrigerators and no air conditioning.
(Even if air conditioners would be able to just make the heat disappear into nothing, you would need a hell of a lot of air conditioners to cool the whole earth, making it practically impossible.)
All this has to do with "preservation of energy" (it's a law of physics) in the sense that you can't just make energy (or heat, which is a form of energy) disappear into nothing, look it up with Google.
A refrigerator cools the air inside the refrigerator and sends the heat outside into the room it's in, you can feel it in the back of the refrigerator.
So if you would want to cool a room by keeping the door of the refrigerator open, you would have to stick the back of the refrigerator out the window so that the heat goes outside. Of course it would be EXTREMELY inefficient. Meaning it would not work very well. It's designed to cool a small closed space.
in my humble opinion, that might as well been you sitting in the car speaking to the cam about global warming.
http://en.wikipedia.org*wiki/File:Air_conditioning_unit-en.svg
(replace * with /)
So yes they do blow hot air outside. And I did know an air conditioner is slightly more complex than I explained, what was important was the basic principle, I was trying to keep it simple.