I don't know if I'm reading this right, but if I am the 72 doesn't refer to the air temperature that is blowing. It refers the the desired temp of the internal air, like setting the thermostat in your house.
If its cold and you set it to 72, then it blows hot air until you warm up to 72. If its hot out and you set it to 72, it blows cold air until you hit 72. The auto regulates the temp and the amount of airflow.
I keep it on Auto and you can set it to different temps, my wife's side at 75, mine at 72.
Again, not sure if I read your question right...just how I interpreted it...



