Why do windows get fogged in the car

Явление запотевания стекол знакомо всем автомобилистам, как правило, оно возникает при повышенной влажности воздуха из-за дождя. С приходом холодов проблема усиливается. Вопрос, why do the windows in the car sweat? интересует всех водителей, так как феномен неприятен не только с точки зрения комфорта, но и безопасности. Limited visibility causes the driver to twitch and distract from the road. Over time, excessive fogging of the glass has a detrimental effect on the upholstery of the passenger compartment, mold, corrosion, unpleasant odor and toxic fumes appear. Gases emitted by bacteria are capable of causing irreparable harm to the health of the driver.

The reasons for the fog in the car

why do the windows in the car sweat

Condensate in the car

The problem cannot be ignored; it must be fought, provided that the “root of evil” itself is found. There are several reasons why the windows in the car mist up, but the essence is the same for everyone - the temperature difference (outside cold air and warm inside) form condensate from the cabin side. Different temperature regimes interact with each other and are converted into microscopic particles of moisture. Water drops refract light streams and a real fog effect appears in the car. Other causes affecting this physical process are:

  1. The number of passengers in the cabin. Human breathing is much warmer than the air in a car, when several people breathe, on cold glasses there is a consequence of the interaction of different temperatures.
  2. Wet elements of the cabin. During rainy weather, hot air from the stove evaporates moisture from wet mats, upholstery and other parts of the cabin. The same thing happens if there are wet clothes, shoes, umbrellas or rags in the cabin.
  3. Clogged air filter or broken ventilation damper actuators. The gaps allow cold air to the glass and the nozzles, resulting in a redistribution of flows and the formation of moisture.
  4. Drunk passengers. Alcohol vapors interact with the humid air of the cabin and settle on the windows in the form of condensate.
  5. Climate control plug clogged. Excessive moisture can not get out and accumulates on the glass. When everything is fine with the climate control system, the problem may lie in the radiator. Coolant comes out of it or the heating pipes directly into the cabin.
  6. Depressurization of the cabin. Glass seals have weakened and lost their functionality. In addition, moist air can easily penetrate into the car through the wiper and antenna clearance.
See also: How to sheathe the steering wheel with your own skin

Preventing glass fogging

why do the windows get fogged up in the car

Using the air conditioner helps to get rid of fogging in the car windows

Having considered the causes of the problem, it is worth moving to a further solution:

  • first of all necessary keep the cabin clean, regardless of the weather. Avoid wetting carpets and other parts of the cabin. Dry or replace wet parts regularly. When a layer of snow has accumulated on the hood of a car, it must be removed, otherwise moisture will be provided in the cabin when the stove is started. Do not forget to use the "non-freeze", it will help protect the windows from ice;
  • before you go warm up the car interior. Keep your air filters, air conditioners and stoves clean. Create a tandem of the work of the stove and air conditioning. Direct the devices to blow off the most foggy places first. The lever should be set to the extreme left position; after the trip, open the car door to even the temperature;
  • This method will help to partially eliminate fogging. In the side skins of the trunk make slots. In the modernized air duct install plastic grilles. The outflow of air after such a maneuver will be much more intense;
  • alcohol-washed glass able to accumulate moisture up to three hours;
  • the use of anti foggers. The principle of operation lies in the fact that chemical agents form a thin layer on the glass, which prevents drops of water from accumulating. The road can be seen well, but if you touch the layer with clothes, stains will remain. Anti-foggers are applied only on a dry, clean surface;
  • during the rain you can use water repellent. This method is good because water drops slide off and frost does not occur;
  • go well in winterNezamerzayki, They eliminate rainfall and create a good visibility to the driver.

Summing up, one thing is clear, before trying to overcome the problem, it is worthwhile to reveal the true cause of the increased condensate. If you leave the issue of fogging glasses without attention, then later it will result in a solid "penny", not to mention the more serious consequences.

See also: Restoring the leather interior of the car