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Two people, breathing heavily. There's a lot of water vapor in your breath, and when two people are going at it they breathe a lot more causing more water. If it's cold outside, the windows fog up like crazy.

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Related questions

Why do car windows fog up?

well it could be because of the heat. if its cold out and you have the heat on in the car, then you will get hot and that will cause the window to fog.


Why do car windows fog up in winter?

moisture from your breathing for example condensing on the cold glass


Why do car windows fog up when the heat is not on?

It is called condensation, warm and humid inside, cooler outside.


Why do brand new car windows fog up inside in cold weather?

Windows fog because the glass is cold and the humidity is high inside the car. It has nothing to do with the age of the car. Try turning the fan up to circulate the air better, and if that doesn't work, turn the AC on -- but turn the heat up so it doesn't get cold. That will do it for sure.


How do i clear steamed up car windows?

Rub them with soap then clear the soap of with a cloth or paper this will reduce the amount it wil fog in the future as well.


Will the blend door failure cause windows to fog in a car?

No the blend door not functioning will not cause fog; it may however prevent the windows from being defogged or defrosted. If the widows only fog up when the defroster is on, then you either have a coolant leak in the heater core or your air conditioner compressor isn't working (the AC is used to dry the air when the heat is on).


What is the time table for removing and installing a heater core for a 1992 cadillac deville?

It will fog up with moisture, the inside windows in the car, also accompanied with the sweet odor of coolant.


Why do you smell radiator fluid and windows fog up?

heater core is going bad.


How do you fog up your car windows?

Well there is an easy way and a hard way, first, you could only do whatever it is you are up to in the winter, it will be colder and when you blow on the windows mist or fog comes up, or you could boil a kettle in their. Hope you got a backseat and a boyfriend or a girlfriend ; )


Why do windows fog up in 1995 Toyota Avalon?

check owners manual i think its a bad design in which this model requires the a/c to be on at all times that the defroster/defogger is on, otherwise the windows will fog up this is horrible while its rain during warm weather


Car windows fog up?

the car's a/c must be working to remove humidity and do not use re-circulation setting(max a/c setting). if your ac isn't working then make sure rec is off and the interior is dry. -awautoglass.com


How do you remove the fog lights from a 1999 trans am?

Jack the front of the car up and crawl under it and you will see how the fog lights unbolt.