We just had a very hot day in Florida followed by afternoon thunderstorms. This evening I went out and it was incredibly humid after the rain. I turned on the A/C and my windshield and rear windows started to fog up. I was in the fresh air mode. Should I have been in the recirculated air mode?
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The arrow in the little man on the dash was pointed to my face. I had the temperature at a high cool but not on the max ac. If I put it on max ac, it automatically goes into recirculation mode.
I didn't press the rear defogger or the front windshield defogger buttons.
I didn't press the rear defogger or the front windshield defogger buttons.
QUOTE
But what about during a rain storm or right after a rain when the humidity is 100% and the temperature is basically the dew point? This is when I'm getting my fogging problems and maybe I'm wrong but intuitively the recirculated air in my cabin should be less humid than the outside fresh air and I should use that in this circumstance?That's backwards to avoid fogging. It's okay to temporarily 'recirculate' the system when you have a diesel truck in front, or when the interior is at 140º, but you need fresh air to avoid fogging your windows. Having the system in recirculate is like blowing your breath on a window; it fogs up once the air inside the car is saturated. Hope it makes sense.
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