Quote:
Originally Posted by p38fln
i can get away with the defrost setting for AC if its for a short time - longer trips (Anything over 30 minutes) and condensation will form. I have to be sure none of the vents are pointed at the windows as well.
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That's because it's cold(er) and dry(er) inside the car than the atmosphere is outside, so you would need to use your wipers to clear the condensation that forms on the outside of the windows. The way to avoid this is to turn the A/C down from the coldest setting so it isn't quite so cold. If you wear eyeglasses, and if you have the vents aimed at you, your glasses will also fog as soon as you leave the car. It does pay to leave the system on recirculate however, as reducing the humidity in the cabin is more comfortable if the weather is very humid.