What temp should AC be coming out of vents?
What temp should AC be coming out of vents? If the AC system is operating correctly, then the air coming out of your vent should be about twenty degrees cooler than the regular temperature inside. So, if you're cooling it and the house is 80 degrees, then you would ideally want the air to be about 60 degrees. Have more air conditioner questions? How much cooler should car AC be outside temperature? A proper operating system should deliver air that is 15-20 degrees below the ambient (outside) air temp, so if it's 80 degrees outside the ac should deliver 60-65...