Absolutely any driver, professional or novice, sooner or later, is faced with a problem when the windows in the car are sweating, they don’t always understand what to do. Sweating windows of your favorite car not only cause discomfort, limiting the visibility of the driver during the start of the vehicle, but also affect the immediate safety of traffic, and, no matter how sad it may sound, can be the cause of an accident.
Often, motorists do not know why the windows in the car fog up and how to deal with the difficulty by wiping the windshield with a rag or sleeve. Let's understand why the windows in the car sweat from the inside and how to fix the situation? First of all, you can use alarmauto-vrn.ru car interior care services - a protective coating for glasses and special compounds that treat car surfaces will significantly improve the situation.
Reasons why car windows sweat.
Condensation on glasses is a product of an extraordinary physical phenomenon and occurs as a result of steam condensation, in other words, vaporization.
It is precisely in view of this that, one and all, drivers do not attach much importance to the wet windows of their beloved iron horse, considering this an ordinary phenomenon, although there are several reasons for the occurrence of condensation on car windows. So: fogging of windows in a car why it happens and what to do:
1. In the cool and winter season, the windows in the car are covered with sweat from a sharp difference in temperature and humidity between the car and the street. The warm air of the car interior interacts with the cold air brought into the car from the street, as a result of which the windows are covered with a thin layer of condensate.
2. This also happens in wet weather, during rain. The reason is not uncommon - the humidity in the cabin rises due to the evaporation of moisture from wet rugs, wet clothes for the driver and passengers, and car seats. The stove dries out things, and the evaporating moisture covers the windows in condensate. In addition to wet rugs and clothes, the source of perspiration can be damage to the windshield insulation or a violation of the integrity of the car door seals.
3. Pollution or malfunction of the cabin filter, as well as its rare replacement and cleaning, leads to a deterioration in air conductivity, and as a result, such a problem.
4. The windows of your car can also sweat in the event of a broken valve or sensor that regulates the normal operation of the valve flaps. Due to these problems, air does not enter the cabin.
5. An oily film on the windows of a car is a dangerous signal of a leak in the radiator, under the dashboard of the car and one of the causes of misted windows.
6. Washing your favorite car - moisture gets inside the cabin, and he does not have time to dry.
7. A “cheerful” passenger who is in a tipsy state is also, albeit transient, the cause of fogging of windows in a car. Alcohol vapors absorb moisture and settle on the car windows in the form of condensate.
How to fix fogging on car windows.
We found out the key reasons why the windows inside the car sweat, the windshield from the inside? now our task is to try to prevent such a phenomenon, or easily get rid of the problem. The following steps will help you do this:
1. Correction of the settings of the climate system of your car. Directed flow, included blowing warm air on the glass will cope with this. Also, the presence of an air conditioner will allow you to cope with the task in a few minutes.
2. The use of specialized anti-fogging equipment, or in other words, anti-fogging agents. The wide selection on the market today allows you to choose any to your taste, in the form of liquids, spray or wipes. The most famous are such as Ombrello VISIO, "Antituman", etc.
3. Preventive ventilation of the car interior, its drying will also help to cope with the task, and you will no longer have a question, like fogging the windows in the car, what to do about it.
4. Timely car diagnostics. Do not forget to replace or clean cabin filters, evaluate the health of the valve or sensor that regulates the valve flaps, as well as the radiator.
5. One simple step will help you deal with condensation on the side windows. You just need to slightly open the side windows, the seals will quickly rid the windows of moisture.
6. Turning on the ventilation system together with the stove will cope with the task of eliminating misted windows. If you turn on only the stove, the air will circulate in a circle without eliminating the problem.
Wet weather and rain, the windows in the car sweat, what should I do?
Wet weather and rain provoke condensation on the windows of the car, what should I do if the windows in the car fog up in this case? A few simple tips will help you deal with this:
1. After you have started driving, you can slightly open the side windows to improve the circulation of air in the cabin, and after the trip, open the doors for fresh air.
2. Carry out preventive drying of the car interior, in particular, on the eve of autumn and winter.
3. Do not leave wet clothes, umbrellas in the cabin, dry the mats periodically.
4. Timely change or clean the cabin filter, as well as troubleshoot the valve or sensor that regulates the valve flaps.
What to do if the windows in the car sweat in the winter season?
In the winter season, the dilemma of what to do if the windows in the car are sweating, and how to deal with it, is especially relevant. Many modern cars are equipped with glass heating systems, which provide quick drying of the windows in the car.
It is also recommended to systematically check the operation of the stove and fan. To quickly get rid of this, it is necessary to include, in addition to the stove, the ventilation system. Thus, the incoming air from the street is mixed with the air inside the car.
If the windshield sweats from the inside, what to do with such a problem? Simple enough - so that the windows do not sweat in the car, the driver can purchase a special compound. It is very convenient to use, it is available in the form of a liquid and a spray, such a special tool is enough for 2 weeks of use.
The windows in the car fog up from the inside - how to deal with this folk remedies?
If there are no purchased funds at hand, what to do in this situation? Folk remedies and tricks will come to the rescue:
1. Shaving foam.
It is necessary to apply a thin layer of shaving cream or gel on the glass, then wipe it with a rag or paper.
Surprising but true! Salt perfectly absorbs moisture, and in order to prevent the windows in the car from fogging up, it is necessary to place paper bags filled with salt under the windows. Salt will absorb all the condensate, and fogged windows will no longer be a problem for you.
This fruit is a real helper in the fight against fogging of glasses, it is not difficult to find it in any grocery store. We cut the lemon into two parts and wipe the car windows, wipe with a towel.
Many experienced drivers wipe the windows of their cars with a regular newspaper, which not only eliminates streaks and adds shine, but also perfectly absorbs moisture.
5. Ordinary soap!
In order not to sweat the glass in the car, it is enough to draw squares with soap in the corners of the windshield and wipe it with a rag. The soap forms a thin film on the window and protects the glass.
6. Self-made defogger.
The composition of such a kind of super-remedy includes ethyl alcohol and glycerin, all this is easy to purchase at a pharmacy within walking distance. The components are mixed in a ratio of 1:20, part of glycerin to 20 parts of alcohol. The mixture for convenience only remains to be poured into a spray bottle from a window cleaner.
Summing up
In the current article, we figured out why the windows inside the cabin sweat in the car, examined the most common reasons why this happens. Every car owner is interested in learning the basic ways to eliminate fogging of windows in a car. We examined the most popular among motorists. It is not necessary to run to the nearest automotive goods store, there is an opportunity to cope with folk remedies.
In general, it is quite easy and simple to solve the problem with sweaty windows in a car!
Fogging, densely covered with moisture droplets glass in the car, this is not just a nuisance, it is quite dangerous. Even a slightly foggy window makes it very 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.
With the onset of the cold season, when there is an excessive amount of moisture in the air and large temperature changes, one of the most common problems that drivers have is fogging of the windows in the car. This phenomenon occurs when the ambient temperature drops, as a result of which the glass cools. Respectively, since heat and moisture do not evaporate in the cabin, and cools near the glass, then it settles on it in the form of tiny droplets. It is enough to sit in the car for only 2-3 minutes so that the windows are covered with tiny drops.
Of course, in this case, visibility deteriorates sharply, and the glass changes from transparent to dull-opaque. The driver stops seeing the surroundings, and moreover, he is also distracted to wipe the glass on the go, thereby increasing the risk of getting into an emergency. If the windshield and two front side windows are still somehow saved by airflow and heating, then the rear ones simply “die”.
Most car owners with experience in this regard give a lot of different tips, which boil down to one thing - you need to change the cabin filter. But is it really so? What causes car windows to fog up?
Why do glasses sweat
Condensation on the inner surface of the glass appears with even a slight temperature difference on one side of the surface and the other. Even one or two degrees Celsius. And the greater this difference, the faster and more condensate appears.. So, it can appear not only in the most common case, when the driver and / or passengers sit in a cold cabin, and due to their breathing, the mentioned condensate appears on the windows. This phenomenon can also occur in the case of, for example, driving in cold tunnels or under overpasses, that is, where the ambient air temperature is lower.
The physics here is simple. At an air temperature of +20°C and a relative humidity of 60%, the amount of moisture is 9.6 g/m³. However, if the temperature is lowered to +9°C with the same moisture concentration, the relative humidity will increase to 100%. And this is a direct cause of condensation on the surface of the glass in the car.
For some modern cars, manufacturers use a hardware solution to keep the glass from sweating. In particular, they use emergency glass blowing or a system. However, within the framework of this material, we will not consider this issue.
Causes of fogging
There are several main reasons why glasses sweat. Moreover, each factor can affect both the general fogging situation and the fact that the windshield, only the side or rear window will sweat more. Let's do it in the form of a table.
| What causes windows to fog up? | Frontal | driving license | Side | Rear |
|---|---|---|---|---|
| Wet seats | ||||
| Wrong airflow | ||||
| Fume | ||||
| Furnace and/or internal ventilation failure |
Clogged or too tight cabin filter
Due to the fact that it does not cope with its functions, a closed air space is formed in the cabin without ventilation. The temperature rises over time, the air heats up and the windows in the car sweat from the inside according to the physical phenomenon described above.
It is also worth noting here that the cabin filter can be not only clogged, but simply incorrectly selected, in particular, too dense. Its material does not cope with the passage of a sufficient amount of air and moisture remains in the cabin. For the same reason, the windows in the car sweat when the stove is turned on. In this regard, many motorists advise install a standard filter in the cold season, and in the warm season - a carbon filter. The standard one does not have such a high density, and accordingly, it better passes air through itself.
Wet car seats
The main reason seats get wet is because some moisture gets into the cabin and is absorbed by the foam seat. In turn, this phenomenon can be caused by the following factors:
- the presence of passengers and / or the driver in the cabin in wet outerwear (after snow, rain);
- bad (old, rotten) rubber seals on windows or car doors;
- long stay of the car with open doors in a damp room;
- liquid getting on the seats (banal spillage of water or other liquid, due to which it has been absorbed and can stay inside the seat for a long time).
It is also worth noting here that the humidity in the cabin can also increase from the fact that the car has been standing in the cold for a long time, and then abruptly moves into a warm atmosphere.
Moisture under carpets
Wet floor mats are also the main source of moisture in the car interior in winter and autumn. And in turn, they cause significant fogging of windows. There are several reasons why moisture accumulates on or under them:
- clogged drainage holes in the floor;
- applied and subsequently melted snow in winter or wet shoes of passengers / driver in the rain;
- a leaking (even slightly) stove or its lines.
Wrong windshield
Usually this phenomenon occurs due to problems with internal ventilation. Glasses do not sweat when the ventilation of air masses is properly turned on. The exception is the rear window at -15°C. As a rule, clogged ventilation ducts or a recirculation valve are to blame. In addition, if the machine is old, then it is possible that the ventilation tubes are simply leaky and holes have formed in them. Also remember that for blowing windows from fogging it is necessary to take air from outside, that is, turn off the internal air recirculation.
Glasses do not sweat when the ventilation of air masses is properly turned on.
At the beginning of the movement, all direct the air flow to the windshield first, then on the front side windows, and then on the rear windows. The mode of ventilation and heating is not regulated in the service, but during the movement, depending on the condition of the passenger compartment and external factors that change every few minutes. First you need to pick up the instructions for the car and read the section "Heating and ventilation".
Quite often it happens that the driver does not even suspect that the recirculation valve is broken, but continues to drive, and wonders why the air in the cabin becomes too heavy, or the smell of dampness appears (in this situation, it helps to either fix the breakdown or temporarily remove the cabin filter, unless of course it has recently changed, but the smell is still there).
Alcoholic fume
The windows in the car also fog up from the fumes of passengers. This interesting physical phenomenon, why glasses sweat, is based on the fact that ethyl alcohol is able to heat up and attract water vapor to itself. Because of this, a situation is obtained when the moisture present in the cabin air becomes more concentrated, and in this form it settles even more densely on the inner surface of the car windows exactly when you drink.
stove failure
In this case, we mean a leak or a complete failure of the stove. In the first case, moisture from it can get on the mat, forming additional moisture in the cabin. In the second, a complete breakdown leads to the fact that the air and liquid will not heat up, so there will be no dehumidification of the air in the cabin, which means that fogging will continue.
What to do if the glass sweats
The surest way to combat fogging will still be to eliminate the cause itself, so it’s worth recalling and listing what you need to look at and adjust in the first place.
- Inside the cabin glass must always be clean, do not touch them with your hands, you must wash them with detergents, and then wipe them dry with clean material. At temperatures below 25 degrees below zero and when traveling with passengers, it is useful to treat glass from.
- Use, so called anti-foggers. It can be both folk and store. Processing them will allow in damp and winter times to significantly reduce or completely remove (depending on humidity and temperature) the fog on the inner surface of the glass.
- It is necessary to monitor the condition of the cabin filter and stove. Their proper functioning will allow you to quickly get rid of fogging when the car engine is already running.
- Follow the warm-up sequence. Warm air must be directed first to the windshield, then to the side windows, and only lastly to the rear window.
- Set the right air intake. It must come from the outside, since it is the outside air that is not as humid as inside the cabin.
- Check the condition of the interior ventilation. If necessary, check and clean the drainage channels.
- Turn on not only the stove, but also the air conditioner(if any). Use the air conditioner in both hot and cold weather. With it, you can quickly get rid of fogging by turning it on to a warm mode (provided that the air conditioning system is working). It dries the air well.
- Dry interior. Glasses rarely sweat when the car is stored in a warm garage. When drying, it is advisable to open all doors in a warm and dry room.
- The climate control system must be turned off.
- Check air recirculation valve.
It is advisable to periodically, at least when the seasons change, check and change the air filters (in particular the cabin filter, if any), clean the ventilation channels, cleaning them of small debris and dust, check the air recirculation valve (if any), through which it enters filtered outside air into the cabin.
It will also help to get rid of the problem that the windows in the car are sweating, periodically checking leaky places in the car, such as: antenna sockets, mirror adjusters and glass seals, to prevent precipitation from entering the cabin.
Moving forward in solving the problem, motorists use many different tricky ways and methods to eliminate glass fogging. It all starts from “opening” the window so that fresh air can enter the cabin, then the problem is solved by itself - someone uses various sprays, “anti-foggers”, a wide selection of which the market offers. But all these methods are for the most extreme case or as a temporary solution to the problem.
The procedures listed above will allow you to partially or completely get rid of the situation when the windows in the car are sweating. It depends on the set of measures taken, as well as the specific situation (the level of humidity in the cabin, the health of the ventilation, stove and other listed hardware).
Reading 5 min. Views 251 Posted September 9, 2015
As soon as there is a sharp difference between day and night temperatures in the open air after the summer, motorists are faced with the problem of fogging of the windshield and side windows. In addition to ordinary discomfort, this situation is an emergency. The driver, due to a misted window, may not fully analyze the surrounding situation on the road. In this article, we will explain why the windows in the car are sweating, and present methods for getting rid of fogging.
Causes of fogging of windows in the car
There are several causes of foggy windows in a car. The main of these reasons is the increased humidity in the car. It arises due to various factors:
- passengers in the cabin exhale water vapor together with the air, which condenses on metal and glass;
- in wet or snowy weather, we bring a lot of moisture into the car interior with shoes, which settles on the rugs;
- Moisture entering the cabin through the stove from melted snow near the warm engine compartment.
All these factors increase the level of humidity in the car interior. While driving or after stopping and cooling the car, moisture begins to condense on the metal parts of the interior or windows, which in the cold season are the coldest part of the car interior.
Now it has become clear to you why the windows in the car fog up. We can proceed to describe the methods of getting rid of this phenomenon.
Prevention of fogging of car windows
If we want the glass in our car not to sweat once again, it is necessary to keep the interior of our car dry and clean. This means keeping your car mats clean and dry in rainy and snowy weather. All you need to do is to shovel snow and water off your shoes while getting into the car. Rubber mats for car interiors, which are easier to clean from snow and water, will help in this matter. They are easy enough to knock out and put back into the cabin. Unlike pile on rugs, rubber is quickly cleared of water and snow. In general, it is enough to pour water over the sides of rubber mats.
You also need to watch out for snow that can linger on the grate between the hood and windshield. After the engine warms up, all the snow from the grate will melt and fall into the cabin ventilation system and enter the car interior in the form of water vapor. Then it will condense again on the windows of the car.
In winter, after a trip, when you leave the car for the night, open the interior and let the air in it ventilate. So you normalize the level of humidity in the car interior with the level of ambient humidity. Timely cleaning of windows outside from snow and ice will reduce the likelihood of frost on the windows of the car.
Ways to get rid of fogging car windows
The table below describes methods for getting rid of fogging on car windows.
| Method | Description |
| 1. Before driving, warm up the interior | In the morning, when you came to the parking lot or garage for your car, do not leave until you warm up the interior and car windows. At the same time, ventilate the interior of the car. Start warming up the car interior by blowing warm air on the windows. To warm up, use the interior stove. |
| 2. Turning on the car air conditioner | If the windows of your car interior are fogged up in rainy weather, turn on the car air conditioner and direct the air streams to the windows. In this case, the intake of air from the environment must be turned on. The car air conditioner will help blow off all the condensate from the glass in a matter of seconds. In other words, the air conditioner effectively dries the air inside the car. |
| 3. Switching on the stove with air circulation | If your car does not have air conditioning, then the air recirculation stove will help to avoid fogging the windows in rainy weather. Turn on the lever for air intake from the environment and the stove. As a result, from heating, the condensate will disappear from the windows, and excess moisture will come out of the car interior. The air in the cabin will thus be dehumidified. |
| 4. increase the outflow of air from the car interior | As you know, air ducts are installed at the end of the cabin to remove air from the passenger compartment, the so-called natural air circulation. On the shelf of the trunk, it is necessary to cut additional holes for ventilation. Air will exit the car more quickly. And interior ventilation will capture more fresh air into the cabin. As a result, we get improved air circulation and reduced levels of humidity in the car. |
| 5. Use of aerosol anti-fog | On sale in automotive stores there are special aerosols with anti-fog. By spraying the anti-fogging agent on the glass, we will prevent moisture condensation on the glass. Apply the anti-fogging agent to the cleaned, dry inner surface of the glass. |
Means - Anti-fog
Anti-foggers are offered in several types:
- in the form of a special liquid that covers the glass with a transparent film that prevents the accumulation of water vapor condensate;
- in the form of a special liquid that will repel water from the glass;
Anti-foggers in the form of mastic are the most expensive, but also the most effective. Mastic covers the glass and protects it from fogging and getting wet. One application of anti-fog in the form of mastic is enough for several trips in wet weather. Also, remember one rule. The defogger will have no effect if it is applied to wet glass. The glass surface must be wiped dry and free from dust before applying the anti-fogging agent.
In winter, you can also use an anti-freeze or a special Anti-Ice product for the car interior. These funds are made on an alcohol basis. Alcohol also prevents condensation from forming on the glass surface. In addition, frost will not form on the glass from the inside at ambient temperatures up to minus 25 degrees Celsius. One application of such special products is enough for 72 hours.
Every motorist, no matter what car he drives, has encountered such a seemingly insignificant problem, which is the fogging of car windows. Contrary to popular belief, the cause of this phenomenon is alcohol that was by no means consumed by the driver or passengers of the vehicle, although this factor contributes to an increase in the intensity of fogging.
The danger of this phenomenon lies in a significant deterioration in visibility, leading to a decrease in the control of the road situation on the part of the driver of the car, that is, it directly affects the level of traffic safety. How to deal with fogging car windows?
To determine the optimal and effective methods of combating this phenomenon, it is necessary to understand the causes of its occurrence.
The process of formation of fogging is explained quite simply. It is based on the temperature difference inside and outside the vehicle and high humidity inside the cabin. Automobile glass, which serves as a boundary separating air masses of different temperatures, condenses excess moisture on itself.
Therefore, it is quite obvious that the only effective method of combating fogging of windshields (and not only) glass should be measures to minimize the humidity of the air in the passenger compartment.
So, why do air masses inside a car have a high level of humidity? There are several main reasons for this:
Video - Glasses in a car sweat - how to deal with it?
How to defog car windows
Currently, there is a whole range of measures that help the motorist to deal with this negative phenomenon that affects traffic safety. Moreover, this complex includes not only measures for the direct elimination of fogging, but also preventive measures that help eliminate the very possibility of the formation of wet fumes. So what to do?
- Produce regularly cleaning the inside of car windows with the obligatory use of high-quality detergents, and after cleaning, wipe them dry with a clean rag. In addition, try to avoid touching the glass surface with your hands.
- In a timely manner dry the interior: floor mats, noise insulation, seat upholstery, etc.
- During replace the cabin filter and cleaning the climate control drain.
- Regularly Check for possible leaks salon.
- Monitor the performance of the vehicle's ventilation system.
Ways to eliminate fogging
In the event that car windows are already fogged up (or iced over), experts recommend:
- Warm up the car until the windows fog up, while excluding the presence of people in the cabin.
- Turn on the ventilation system in a mode that ensures the flow of air masses from the outside, since the air circulation in the cabin is ineffective.
- If the vehicle is equipped with an air conditioning system, turn it on.
Chemical anti-fogging glass protection
Modern manufacturers offer motorists a wide selection of chemicals (liquid and aerosol) that prevent windows from fogging. The principle of operation of these preparations is based on the formation of a water-repellent film by them, which reduces the coefficient of surface tension of glass, which prevents the formation and preservation of excess moisture on the surface of automotive glass.
The action of almost all modern anti-fogging glass protection products can be divided into two stages. Initially, the drug acts as a glass cleaner, since it contains cleaning components, and then the cleaned car glass is covered with a specific protective film.
However, in the process of choosing and using chemicals that prevent fogging of car windows, there are certain features, the so-called "pitfalls". Low-quality preparations, of which, unfortunately, there are quite a few on the shelves of domestic car dealerships, have the negative feature of leaving a non-drying greasy film on the surface of auto glass. Traces from it stain the interior upholstery, and the stains and glare that appear on it can significantly complicate the perception of the traffic situation by the driver of the vehicle.
The use of high-quality drugs does not threaten the motorist with such complications, however, their search will require some effort, and the acquisition of some costs.
As a summary, it must be stated that if your windshield sweats from the inside, this is a serious problem and it must be solved by no less serious methods and through serious means. It was about them that was described above.
