" Any time the evaporator surface drops below the freezing point of water, it'll ice up. That the air moving through the evaporator is hotter merely means that it takes more cooling capacity to get the evaporator temperature to that point"......Moneypit

I don't dispute that..absolutely correct. yes, i might be interchanging the wrong terms, but the picture is there. If there is a climate with null/low humidity, i think the "evaporator" temp could be lower than 32. But lets talk about vent temperature. I want the evaporator to get cold enough so that when the warm air passes over it; it's coming out the vents at 34 or 35 which is above freezing and is not 49. That is an optimized system. Not one built for all the masses.

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JHaburay

1972 280se 4.5 "princess"
1986 2.3-16v first 100 (099) USA