How do you stop a car misting up?

Question

Sometimes when i go out to my car, the inside of the windscreen has condensation on it. It takes forever to dry off and leaves smudges on the window.
Also when im travelling the windows all mist up even with thte warm blowers on. How do I stop this and what might be causing it?

Answer 1

first of all, clean your windows and dry them very well. start your enging and leave the window heater on for a minute or so.... do not wipe the window with your hands. let the blower dry it for you its much better in the long run.

Answer 2

Condensation takes place on a surface due to temperature difference on either side. Example, when you pour cold water into a glass. Condensation water forms on the outside of the glass because of the temperature difference between the liquid inside the glass and the air outside the glass. This is the same principle. The air inside the car was warm( heat from the engine has heated the air inside the cabin.) If the outside air is cold then there will be condensation inside. Usually starting the warm air blower will dry away the the water vapour. But because th air inside the cabin is warmer than the outside, condensation will still take place. You will have to bring the cabin temperature as close to the outside temperature to stop the condensation from taking place. Blowing hot air will only increase the condensation. Most cars will have a demisting button neat the blower/ air conditioner switch. When used, the blower/ air-conditioner will blow dry warm air on to the wind screen via the openings where the bottom of the screen meets the dash board and through the air vents near the side view mirror. The blowers should blow dry cold air and not hot air as it will only increase the cabin temperature and because the outside air is colder condensation will take place. Hope this helps.

Answer 3

If your car is misting up in the rain while you're driving it, you need to stick the heating/air on, there should be a setting where the air comes out of the vents on your dash toward the windscreen - this is the one you want, also point the vents that would normally go towards you and your front passenger towards the front windows instead. If the car mists up after sitting for a while e.g. over night, your car has a damp problem, there are lots of ways water can get into your car, you can either systematically check them all yourself or take it to a garage and see if they can fix it.

Answer 4

Don;t tell your car any sad stories, so it won't mist up.
No, seriously, you need to have your heater vents set so that some outside air is being drawn in. If the heater is just recirculating air from inside the car you will get fogging on the inside of the windows. If that don't work, it could be a leak in the heater plumbing somewhere - if so you would probably smell some antifreeze inside the car.

Answer 5

don't let the air circulate inside the car
use the defroster with the ac on
crack open a window so the vapor can get out.

Answer 6

Check for a leaking heater coil.

Answer 7

your heater core is probably leaking.check the water in your radiator its probably low.heater core is usually under the dash on passenger side. lift the carpet on the passenger side floor and see if its wet. if your looseing water and the floor is wet replace the heater core