From: odiego

So if the control thingy is located in let's say the kitchen, and you
turn your AC to run auto at 70 degrees, and the kitchen is 80 degrees
while all the other rooms are 65 degrees, the AC will keep running
anyways?

Main reason you never install a thermostat in a room with alot of heat or
humidity,the unit will run more then it has to cause it thinks the whole house
is as hot as that one room when it isnt.Also most acs should be set at 78 or 80
degrees to save money and electricity.In winter furnaces 68 to 70