Why is my windshield fogging up? Moisture not being pulled out of the air.

What is your question?

2009 Chrysler Town and Country - No air coming out of windshield vents when using defrost causing windshield and all other windows to fog up. It seems as if moisture is not being pulled out of the cabin. Why? There is hot (when knob turned to heat) air coming out of all other vents but not coming out of the windshield (top of the dash) vents. Air will switch between hot and cold and the blower motor works. No noticeable noises, smells or leakage (coolant/water) of any kind. Vehicle's default function is to draw air from outside. Air recirculation function is off.

What makes this problem better or worse?

Only a problem in cold temperature.

How long has your 2009 Chrysler Town & Country had this problem?

2.5 years