Originally Posted by rcrabb22
The term heat exhaust was misleading. I am concerned about how much the heat the A/C unit would generate during operation. I know little about refrigeration principles but I do know air blown off from my central A/C compressor outside is pretty warm. To make something cold, the heat must be shed somewhere else.
That was his point. The heat your AC puts out is only the heat it removes from the cold side, plus a little bit from the electricity that operates it. Assuming you're not pushing the temperature inside the box too low or are otherwise not wasting the work of the AC, the amount of heat it will put off is probably not enough to worry about.
An AC is a heat engine run in reverse. Go here
and look at the heat engine diagram, but reverse the direction of the arrows.