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windshield condensation

rickselevation
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rickselevation New Member

rickselevation

Posted
Posted

If owned a 2015,2018, and now a 2021 Sierra, my wife has a 2018 Acadia, what is the deal with the front windshield collecting condensation on the outside, inline with the inside defrost vents it will happen at 70 degrees and damp outside ?? happened on all 4 vehicles . Anyone else have this issue, or an idea to resolve it. 

Adamace1 Enthusiast

Adamace1

Posted
Posted (edited)

Are you talking about when your are driving? Is so some of the ac/ heat leaks through the defrost vents and will change the temperature of your windshield and make condensate more likely.

 

The only way to resolve it would be to turn the temperature on your climate controls higher so that air is warmer than the outside air.

Edited by Adamace1
redwngr Senior Enthusiast

redwngr

Posted
Posted

Anytime you make a surface colder than the dew point of the air passing across it air there will be condensation. 

 

(that's how de-humidifiers work, and is the reason AC units create condensate )

 

'Here' we sometimes get conditions that can do that to the outside of a windshield -- but not very often.

Sometimes changing HVAC settings can help.

Sometimes it is necessary to resort to an occasional cycle of the wipers.  

 

 

 

 

Phantom 4D Enthusiast

Phantom 4D

Posted
Posted
12 hours ago, redwngr said:

Anytime you make a surface colder than the dew point of the air passing across it air there will be condensation. 

 

(that's how de-humidifiers work, and is the reason AC units create condensate )

 

'Here' we sometimes get conditions that can do that to the outside of a windshield -- but not very often.

Sometimes changing HVAC settings can help.

Sometimes it is necessary to resort to an occasional cycle of the wipers.  

 

 

 

 

Explained very well. Happens all the time here in NC. There's nothing wrong the truck.

  • Like 1
Adamace1 Enthusiast

Adamace1

Posted
Posted (edited)

Damn I thought I had a chance to be quoted with the right answer.... I'll try harder next time. I'm even in NC....

Edited by Adamace1
  • Like 1
Phantom 4D Enthusiast

Phantom 4D

Posted
Posted
17 hours ago, Adamace1 said:

Damn I thought I had a chance to be quoted with the right answer.... I'll try harder next time. I'm even in NC....

I'm in Eastern NC. Gotta be faster on the keyboard. :)

Adamace1 Enthusiast

Adamace1

Posted
Posted
7 hours ago, Phantom 4D said:

I'm in Eastern NC. Gotta be faster on the keyboard. :)

I was the first reply.. but I am from charlotte area...

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