To prevent the windows of the car from fogging up from the inside. Why the windows in the car sweat from the inside and what to do in this case

Fogging, densely covered with moisture droplets glass in the car, this is not just a nuisance, it is quite dangerous. Even a slightly misted window makes it difficult to see, which is a direct road to an accident. Far from always (not on all models), the existing climate control system can cope with such a misfortune, but it is necessary to deal with fogging, and this is it. In principle, it is not difficult if you know how.

Why do car windows sweat? Ways to resolve the issue

Reasons for fogging windows

Where does moisture come from on the inner surface of the windows, because there is no rain inside, no dew falls? In fact, there are several sources of excess moisture inside the car, and the first source cannot be removed from the passenger compartment, since this is a person, that is, you, the driver, passengers. A person releases enough moisture, it is contained in the air exhaled by a person. Moisture also evaporates from wet or damp clothes, damp rugs, and soaked upholstery.

A person who is accustomed to the omnipresence of shopping centers, seeing foggy car windows, will immediately think of the nearest auto shop where you can buy a special tool for this. There are quite a lot of such auto chemicals in colorful bottles in stores.

This is the easiest way to buy and spray or rub a branded anti-fog compound on the glass. However, this method is very expensive, in addition, most of these preparations contain glycerin, which is the cause of the appearance of iridescent stains. So, before you go to buy auto chemical goods, you can try other methods of dealing with this problem.

How to get rid of fogging windows

And the most reliable and logical way is to use the air conditioning system. It is necessary to warm up the interior by turning on the stove to the maximum, if there is glass heating, then turn it on. If you use an air conditioner, then switch it to the air intake mode from the outside, recirculation will not help here. To speed up the process, you can open the rear windows a little. In just a couple of minutes, all fogging will disappear.

Prevention

Of course, it is good to remove fogging, but it would be better not to observe this at all in the cabin, and preventive procedures are needed for this. As such, it is recommended to regularly ventilate the interior, dry the rugs, the upholstery under the rugs should also be dry. It is advisable to keep the doors open for a while. Some drivers paste glass from the inside with a special film.

Prevention of fogging of glasses

If fogging has passed into a chronic phase, even with preventive procedures, then you need to check your car for technical condition. Perhaps, for some reason, moisture accumulates inside the upholstery, inside the soundproofing. All defects should be found and eliminated. Clogged ventilation can also cause windows to fog up. Sometimes it is enough to simply replace the old air conditioner air filter, as well as eliminate the microleakage of the heater.

As soon as the temperature outside gets cold enough, one of the most massive problems faced by motorists around the world begins. We are talking about fogging of windows, which occurs, regardless of the brand of car and its price.

The main danger of this phenomenon can be considered that we get limited visibility in front of the car, which is unacceptable for safe driving, and also causes a lot of discomfort in the form of constant stops in order to wipe the windows.

The reason for this is the appearance of moisture in the cabin, which evaporates and settles on the coldest parts, namely the windows. But, here it is worth considering in more detail the question of why the windows sweat in the car.

A foggy windshield can be dangerous

... and the rear too

Reasons for fogging windows

As we know, fogging refers to the appearance of water condensation on the glass surface. Inside the cabin, this moisture, most often, gets along with human breathing. This means that the more people in the car, the more likely it is that the windows will fog up. As you can see, . In addition, in wet weather, we bring moisture with us on shoes or clothes. All this liquid is absorbed into the seats and mats, after which it gradually evaporates.

Also, the windows sweat in the car for the reason that the stove, which heats the interior of the car, does not work well enough. The fact is that the air that is injected into the cabin is taken from the top of the hood, where special holes are located. Therefore, rain, snow, or simply moisture in the air can get there. This is especially true on cold winter or autumn days.

Prevention of fogging of glasses

But, if everything is clear with the reasons for the appearance of this effect, then this means that we need to figure out how to get rid of glass fogging. You need to take care of your car regularly, in particular its interior, which will significantly reduce the adverse effect of the presence of moisture in the air.

The first step is to keep the interior clean. This is very important when you are wondering why the windshield sweats from the inside, especially in seasons other than summer. The essence of such actions is to carry out regular ventilation of the cabin, especially during the short hours of autumn heat. Also, you need to wash the rugs and dry them thoroughly.

Naturally, this will be very difficult to do with fabric rugs, since they have the ability to absorb moisture.

So, it would be appropriate to replace them with new rubber mats. Their special structure involves the retention of liquid in small cells, from which, however, water will be very easy to pour out.

The mats must be rubber (in the figure, the Lifan X60 mats)

Try not to get into the car with too wet shoes. A simple shake of the boots can remove more than half of the moisture from their surface.

For the winter period, the recommendations will be somewhat different. So, you need to remove snow from the hood of your car in order to prevent it from melting and getting into the cabin through the car stove. Do not forget about regular ventilation of the cabin with the help of air circulation inside. As for the glasses themselves, they must be cleared of ice on the surface.

The wiper must contain alcohol so that moisture does not freeze on the glass during operation.

It will not be superfluous to start airing and warming up the cabin every time you start the car. Air should flow to the windows of the car, but it should not be too hot. Raising the temperature should be done smoothly. The correct operation of the stove, air conditioner and air filter will help us with this.

The filter must be in good condition

Dealing with fogging windows

Air conditioner. As we have already said, you can remove moisture with the help of an air conditioner. The fact is that it is able to dry the air and maintain its temperature at a given level. The best option would be to turn on the stove and air conditioner together.

Collective farms quietly - we make additional holes

But, you can resort to more radical methods in the fight against misted windows. To do this, it is necessary to improve the ventilation system, which is “lame” in almost all cars. If we consider these actions using the example of Chinese Lifan cars popular in our country, then it will be even easier to do this, since access to the necessary parts is not closed in them.

Holes must be cut carefully.

First, you need to cut small holes in the side trim of the luggage compartment. These holes will need to be closed with special plastic gratings. This will significantly increase the air flow, which will make the ventilation in the cabin as efficient as possible. It is important to remember only that it is appropriate to do such actions only when the car warranty has already ended.

Special chemicals

For a "softer" fight, it will be possible to use special chemicals. We are talking about acquiring anti-foggers that will not allow moisture to settle on the windows, which means that visibility will be maximized.

Such substances can be sold in three main forms.

The most affordable and popular options will be in the form of liquid and aerosol.

They settle on the surface of the glass with an even film, and do not allow moisture to accumulate there. More expensive, but also effective, as well as long-lasting, will be the option with the use of anti-foggers in the format of a special mastic. One use of such a tool, as a rule, is enough for several days of driving in wet weather.

It is only important to remember that these products should be applied only when the glasses are completely dry, so these substances can be classified as preventive. As a result, the problem with the fact that the windows are sweating in the car will be eliminated.

However, in our country, the prevention of problems is not a popular practice. Instead, people are used to dealing with problems that have already arisen. So, alcohol-containing substances called "Antiled" and so on are in stable demand in the automotive markets and in stores.

They allow you to eliminate moisture even when the glass is not completely dry. In addition, the operating temperatures of the external environment for such substances reach -25 degrees Celsius, and the effect of such a liquid can last up to three days. After that, the glass will remain dry, which will provide excellent visibility, and you will be calm, so that you are no longer afraid that the windows in the car are sweating.

Good visibility is one of the key parameters for safe driving. The driver must control the situation around the car 360 degrees, and for this, the windshield, side and rear windows, as well as mirrors, must always be clean. In winter or during rain, you can notice a situation where the windows in the car are sweating from the inside. Because of this, visibility is seriously impaired, and the operation of the car in such cases is not recommended. As part of this material, we will explain why the windows inside the car are sweating, and we will also give recommendations on what to do in such situations.

From a physical point of view, the process of fogging glasses is quite simple to explain. Due to the cold air outside and the warm air inside the car, condensation forms at the interface between them. Moisture from warm air does not evaporate and settles in small drops on the glass. As warm air partially escapes from the vehicle, it also settles on the rear-view mirrors, which also fog up when the outside temperature is low.

To minimize the process of fogging the windows in the car, you need to “dry” the warm air as much as possible. In other words, it is required to create conditions inside the car under which the air will be less humid. It follows from this that the main causes of fogging of car windows are as follows:

• Wet seats, boots or mats;
• Human breathing, the more passengers in the cabin, the more the windows fog up;
• Working car oven. It takes air through a special hole into which rain or melted snow enters, which leads to an increase in air humidity in the car.

From the above reasons for the fogging of windows in a car, we can conclude that in order to eliminate the problem, it is necessary to minimize the amount of moisture in the air circulating in the passenger compartment of the car.

In most cases, so that the windows in the car do not fog up, it is enough to follow simple rules:

1. When getting into the car, knock snow or raindrops off your shoes;
2. Do not put wet things in the car interior. If it's raining outside and you have a wet umbrella, put it in a bag and seal it as much as possible;
3. Rugs, chairs must be kept dry;
4. Check the cleanliness of the drainage system under the hood of the car. Before going on a trip, especially in autumn or winter, remove leaves/snow from the hood grate, otherwise, when the stove is turned on, the snow will melt and then enter the car interior in the form of moisture.

The recommendations described above allow you to minimize the amount of moisture in the car interior, which reduces the likelihood of fogging the windows. If the glass still continues to fog up, you need to take a more serious approach to solving the problem.

Point the air conditioner at the windows

One of the easiest ways to get rid of the problem of fogging windows is to direct the air conditioner at them. To do this, you need to turn on the blower at maximum speed and direct the air stream directly onto the windows. In order for moisture to leave the car interior faster, you can block the central air supply holes. By itself, the air conditioner dries the air in the cabin and removes moisture.

The air conditioner will quickly cope with the fogging of the windshield of the car, but it will take more time to heat the entire cabin and “dry” the air, so the rear and side windows risk remaining unsuitable for driving.

Use "chemistry" that prevents fogging of glasses

There are many special tools, the task of which is to combat the formation of drops on the glass surface. In the common people they are called "anti-rain", "anti-condensation" or "anti-fog", and they create a surface on the glass that does not allow water to accumulate. The use of "anti-rain" is advisable both outside, covering the windshield with it, and in the cabin. Such funds are of 2 types:

If there is a problem with fogging windows in winter, you can use conventional washers or anti-ice class products. Their application to the glass in the passenger compartment of the car will allow you to overcome the problem with the formation of condensate for 2-3 days, while specialized products last much longer.

Change cabin filter

When the question arises of what to do if the windows in the car are sweating even when the air conditioner is on, you immediately need to think about the cabin filter. When it becomes dirty, an obstacle arises for the exit of air with excess moisture from the passenger compartment, and it settles on the windows of the car.

For different car models, the cabin filter can be located in different places, and its location is easiest to determine from the documentation from the car. The data sheet also contains information about the frequency of changing the cabin filter, but in practice, drivers change this “consumable” less often than recommended, which is why there are problems with air circulation in the cabin. At the same time, changing the cabin filter with your own hands is quite simple, and you should take care of this if the windows in the car fog up.

If condensation has formed on the glass of the car, then it must be removed, even if the air conditioner is already on. Some drivers start wiping the glass with a cloth that they use to clean various dirt on the car, but this should not be done. Get a separate microfiber sponge or cloth to clean the inside of the glass. Wipe the windshield diagonally to avoid streaks.

Clean windows provide the necessary visibility, increase comfort and traffic safety. This contributes to control, the correct assessment of the traffic situation.

But sometimes it is noticeable that the windows in the passenger compartment of the car are sweating. At the same time, visibility deteriorates sharply, and the likelihood of an emergency situation increases.

To prevent unpleasant incidents, the causes of fogging and methods for eliminating fog on the glasses are determined.

The process occurs due to the formation of condensate. More often this happens in the cold period, when there is a big difference in temperatures in the car and on the street.

Reasons for the rise in temperature:

• operation of the power plant;
• the operation of climate control, stoves;
• driver, passengers.

The higher the temperature in the car, the more comfortable the ride. Here, warm air masses come into contact with the cold surfaces of the car. Crystallization occurs, the glass becomes cloudy, and unwanted condensate forms.

To understand why the windows in the car sweat from the inside, other situations should be studied.

Possible causes of fogging:

1. As a result of a violation of the tightness of the seal, moisture easily penetrates into the interior of the car. To fix the problem, it is recommended to replace the seals.
2. In bad weather or after cleaning the interior, unnecessary moisture remains on the rugs, upholstery, seats. Then, during the operation of the heating system, dry air quickly becomes moist.
3. The stove does not always work properly. The air masses supplied inside the car are taken from that part of the hood where the corresponding openings are provided. Because of this, it is difficult to exclude the possibility of snow, rain, excessive moisture getting inside.
4. While the driver and passengers are in the car, moisture gets into the air. And the more people in the cabin, the sooner the condensate settles.

If the windows in the car fog up, the climate control system becomes an effective method of dealing with it. Its work contributes to heating the air, removing excess moisture. A stove is also used, the warm air of which is directed to the windshield. Building windows are also equipped with heating systems.

But this does not solve the problem with side openings.

The fight against fogging glasses requires the right approach. It used to be considered appropriate to rub glass surfaces with glycerin mixed with alcohol. They took 1 part of glycerin and 10 of alcohol.

This method is accompanied by the formation of glare, streaks that impair visibility at night.

It's also easy to get dirty. Therefore, in wet weather, drivers often think that the windows in the car are fogging up from the inside, what should I do?

Here they use:

• a rag, although this option is not effective enough - moisture reappears on the windows;
• rub the surface of the glass with a newspaper, since the printing ink contains substances that help create a film, roll moisture in the form of drops;
• tobacco - found in cigarettes, used for rubbing;
• pre-dried salt, located in a paper bag, perfectly absorbs moisture, preventing unpleasant manifestations.

Radical methods of dealing with high humidity:

1. Improving the ventilation system by creating additional holes in the skin. More often this is done in the luggage compartment, where there are air ducts. The procedure is accompanied by the installation of plastic gratings. This method is used on cars where the warranty has ended.
2. Anti-fog agents are chemical agents that allow you to easily deal with condensate. After their application, moisture does not settle on the windows or immediately begins to turn into drops. Aerosols and formulations that form an invisible film are more commonly used. The best result is provided by mastics. Once applied, they last for several days.

Before you process the glass of the car, so as not to sweat, you need to make sure that the surface is dry and clean. Pre-ventilate, warm up the interior.

How to prevent fogging windows

A working climate control and heating system, timely car interior care - all this contributes to maintaining an optimal level of humidity. These are effective preventive methods that allow you not to think later why the windows in the car fog up from the inside in winter.

After all, the main reason is the difference in air temperature outside and inside the car.

Care highlights:

1. Regular airing of the cabin, especially with the onset of autumn, when there are still warm periods.
2. The carpets in the car are washed and dried. Here, rubber models are preferable, since they are easier to care for and remove water. Fabric models are not recommended for use - they strongly absorb moisture.
3. If possible, it is better not to get into the car with wet shoes. Otherwise, the shoes are shaken off.
4. It is not recommended to keep cleaning cloths in the car, especially wet ones. It is desirable to remove them.

1. It is important to remove snow from the car and the hood in time, which will not allow moisture to penetrate deep into the heating system and into the passenger compartment.
2. Periodic ventilation allows you to optimize the level of moisture. It is recommended to do this before every trip.
3. The outer side of the glass must be cleaned in time from frost and accumulation of dirt.
4. The compositions used to clean the surface of the windshield are chosen with alcohol, which will prevent moisture from freezing.

The process of warming up the machine is the same, regardless of the season. The temperature of the supplied air is raised gradually. It is served in the direction of the glass, observing the optimal performance.

Malfunctions and other factors leading to increased humidity

Other causes of sweating:

1. The filter of the air conditioning, heating system could get wet, absorb moisture and do not have time to dry. There is a possibility of its failure. Then the filter element is changed.
2. The drain holes of the device are clogged. Because of this, the water in them is blown into the car. Having found such a problem, it is enough to clean the holes.
3. During the operation of the stove, warm, moist air is removed. To do this, slightly open the window, then the humidity level will decrease.
4. If too many things are transported in the car, this becomes a problem.
5. The cooling system of the power plant does not always work correctly. As a result of overheating, vapors are formed that penetrate into the passenger compartment through the ventilation system. If such a defect is found, the masters will help to eliminate it.
6. If passengers have previously consumed alcohol, this will cause an increase in humidity. Alcohol vapor stylishly absorbs moisture, which then settles on cold planes.

The correct technical condition of the car, the effective operation of its systems, allows you to control the optimal level of humidity, to prevent the likelihood of fogging the windows.

One of the main conditions for safe driving is good visibility. It is clear that the windows of the car, both side and wind, must always be clean. But what to do if the windows in the car fog up?

Why the windshield constantly sweats from the inside: the main reasons

The windows in the car fog up from the inside due to the fact that the temperature in the cabin exceeds the street temperature. As a result, the moisture contained in the cabin condenses on the windows. If the air humidity is high, then the windows completely cease to be transparent. That is why the windshield fogs up especially strongly from the inside in the rain (although this can happen in dry weather).

WATCH VIDEO

From the foregoing, it follows that in order to eliminate condensation in the passenger compartment, it is necessary to minimize the moisture content in the air. Its amount can be increased for several main reasons:

1. Water on rugs or wet shoes
2. A large number of passengers (a lot of water is released with breathing)
3. Wet saloon

Most often, the windows in the passenger compartment of the car are sweating precisely because of this. The recommendations in this case are simple: it is necessary to monitor the shoes and cleanliness in the car, and also, in case of fogging, wipe the windows. In addition, before accepting passengers, you should warm up the car. However, there are other reasons why the windows in the car sweat.

Cabin air filter dirty

Misted glass may be a sign that the air filter needs to be replaced. If it is dirty, moisture simply cannot leave the car. In addition, air pollution in the cabin is manifested, and when the ventilation is turned on, airflow is not felt. Experts recommend not to wait for such consequences, but to replace the element every 10,000-20,000 km.

Water ingress into the cabin

Moisture can enter the car not only through the doors, but also through the ventilation. Under the hood, all cars have drainage holes. If they become clogged, water will accumulate and enter the ventilation system. Because of this, the windshield sweats from the inside.

Wet soundproofing

The materials used for soundproofing in cars can absorb water well. This is especially often observed after trips through puddles or in rainy weather. To prevent the glass from sweating in the car, it is necessary to dry the material.

What to do if the glass sweats when the air conditioner is running

Quite often, motorists are faced with fogging windows during long-term operation of the air conditioner. In this case, moisture is already formed outside. In fact, this process is normal (again, a large temperature difference is at work). Therefore, there is no need to worry in this case.

How to remove condensate

After the appearance of condensate, many motorists immediately turn on the stove or open the window. These methods do work, but they may not be enough. If visibility does not improve, it is necessary to wipe the windows diagonally (this way there are less stains) with a clean rag or napkin.

Chemistry from fogging

On sale you can find products that help get rid of the appearance of condensate. They can be in the form of a liquid or mastic, and are used both on the inside of the glass and on the outside. The anti-fog agent must be applied to a dry surface and rubbed. After that, a transparent film will appear on the window, repelling water. In winter, you can use anti-ice products.

You can also make your own glass defogger. To do this, you need to mix glycerin with alcohol, and then apply the mixture to the window.

Sweating glasses on prior, viburnum, vaz 2112 or 2110: what to do?

If the windows in the car are sweating, you can try turning on the stove. If condensation appears constantly, you should apply an anti-fog glass in the car. You may also need to replace the cabin filter (it is better to choose coal).

Fogging on Solaris, Mercedes w202 and Kia Rio

How to prevent fogging in the summer in the rain

WATCH VIDEO

Most often, the windshield fogs up from the inside in rainy weather. Therefore, it is advisable to take care of this problem in advance. Here's what you need to do.

• The state of the interior should be monitored. It must be dry.
• Before you put passengers, you need to warm up the car.
• You can use specialized tools. The main thing is that the defogger be of high quality, otherwise stains on the glasses are inevitable.
• Car windows need to be cleaned periodically.
• If you have an air conditioner, before the trip, it is advisable to turn it on and direct the air flow to the glass.