The reason frost forms on windows is due to the dew point and temperatures. The dew point is a temperature at which water in the air will condense into liquid H2O. In this case the H2O has reached the dew point and has actually frozen due to reaching a temperature of or less than 32 degrees Fahrenheit.
moisture from your breathing for example condensing on the cold glass
Ive only once had a problem with foggy windows, but I was told to wash the interior windows with winter windshield washer and they will never fog up or freeze.
winter
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.
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 ; )
Fog is steam (water vapor) thus if you have it in your house you are either living high up a mountain and have your windows open or there is some source of hot or boiling water inside your house. Is anyone taking a shower, is the water heater faulty and boiling your water in the hot tank, is there a kettle or pan boiling.
heater core is going bad.
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
It is called condensation, warm and humid inside, cooler outside.
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.
If the heater core is ok, check to insure your ac unit is working. The ac works in conjunction with the heat when running defrost, and without the ac air windows will fog up .
The moisture in the air caused the windows to fog up.