Fogging is a common problem for drivers that may even pose risks while they are driving.
Knowing how to defog car windows in rain without AC is necessary for people to get a better driving experience.
This writing will highlight the causes and solutions for this issue with the fullest details. If you are facing a bad haze, consider the information provided to deal with it.
Why Your Car Windows Fog Up?
Causes
Foggy glass offers numerous inconveniences and even dangers to the drivers. Particularly, there is a great limitation in visibility while you are driving on the road.
So why do windows and windshields fog up? In general, fog forms on the surface of your vehicle’s windows because of the differences in humidity and temperature outside and inside the car.
This phenomenon is considered to be the moisture becoming condensation on the window.
On rainy or freezing days, the outside temperatures are lower than those inside your vehicle.
As the point of relative humidity is lowered, the outside temperature cools down the air inside and makes it condense on your windows.
In another case, don’t be surprised if your windshield fogs up after a night. The reason is that you turned on the heater during your last driving and the warm air still remained during the night.
Once the windshields get cold due to the outside temperature, the warm air remaining inside the car becomes condensed.
The condensation even happens while your engine is on and the heating is on a high level.
When Do They Fog The Most?
The foggy windows issue is mostly available throughout the year with two weather condition types.
Specifically, the rain or mug from the spring to the autumn and the coldness or dryness of the winter can make the windshield fog up.
Thus, numerous drivers are in trouble with how to defog windshield in rain and dry seasons.
In the spring, the fog builds up in the early morning or late evenings when you go through a foggy place.
Summer fog appears outside the windshield, whereas the one in the winter forms on the inside surface of the glass.
How To Defog Car Windows In Rain Without AC
Instructions
Consider these solutions for how to get rid of foggy windshield without AC and pick up the most relevant one:
Step 1: Turn the defroster of your vehicle to the highest temperature and blower. Yet, this method is rather more helpful for the car’s frosty windshield and even worsens the glass’s inside or outside foggy surface.
The key to this solution is to maintain the temperature balance between the flow from the air conditioner and the windshield.
You can try blowing warm or neutral flow through the dash’s vents to the hazy windshields.
Step 2: On a dry day, you can roll down the windows while doing the first step to progress the defogging process.
However, this technique is not relevant to defog windshield in rain as the rain drops outside will make you get soaked. In this case, ensure that you just roll down no more than an inch to block the rain outside.
Making use of the warm or neutral air is effective under any weather conditions, although some people claim that spring and summer require cool flow for defogging.
The only thing you must remember if you wait for fresh ambiance to release from the vents is that the button for recirculating air is off, and the one for fresh air is on during this process.
Step 3: Use the wipers to remove the summer condensation and the melted icy car windows in the winter. How to defog your windshield when it’s raining with the wipers? You only need to flip these parts on before starting your driving.
What You Should Not Do
Besides the answer for how to defog windshield without AC, here are some actions you should avoid in this situation.
- Do not rub the fog with your hand. There is oil available on your hand skin transferring to the glass surface. It results in smears that limit your driving visibility and worsen the issue afterward.
- Instead, you should use a microfiber cloth for rubbing as a quick and temporary solution like the way you use a towel to prevent frost on the windshields. The best type of cloth recommended for this task is heavily threaded and contains silver nanoparticles.
Its silver element can remove the bacteria from the vehicle’s surface and protect your health.
How To Prevent Foggy Windows
Using Anti-Fog Products
To avoid being in trouble with how to defog windshield in rain without AC, you can go for some techniques of prevention. The most common method is using the products for anti-fog.
The highly recommended choice in this writing is the wipers that keep your windshields off the rain. There is no doubt that this product can make your car windows become rain resistant.
However, it also surprisingly works well in keeping the glass surface clear of the fog.
If you go for the anti-fogging sprays, do not spray the product directly on the windows’ surface to prevent the liquid from splashing on the dash and vents of your vehicle. Instead, you should spray the product on a microfiber cloth before wiping it down.
Some types of anti-fogging sprays can diffuse the light or cause glare in the evening.
Another prevention is to reduce the moisture inside your car. Place some silica balls in a sock or stocking in your vehicle. They can absorb the excess moisture properly.
DIY Anti Fog Windshield
Besides purchasing preventative products in the market, you can also DIY the anti-fogging methods. Consider these suggestions:
DIY Anti-Fogging Sprays
Preparation:
- Water, rubbing alcohol/ ethanol.
- Spray bottle
Instructions:
- Mix the water and the rubbing alcohol or ethanol with a ratio of 1:2
- Shake the mixture together
- Put the final liquid into the spray bottle. Spray the liquid onto the glass surfaces of your car.
DIY Cleaning Liquid
Preparation:
- Shaving cream
- At least two pieces of soft cloth
Instructions:
- Spread the foaming cream used for shaving on the inside surface of your car’s windows. Leave the texture there for around two minutes.
- Use a soft cloth to wipe off the cream, then take another dry cloth to wipe the windshield dry.
For a while, your car glass would not be involved in fogging afterward. Moreover, keeping your vehicle windows clean is another preventative tip.
The clean glass turns out to be more fog persistent. Meanwhile, the dirty ones offer greater invisibility and are also more glare.
FAQs
How To Defog Car Windows In The Summer?
Reduce the speed of AC: Although drivers all enjoy the cool atmosphere inside their car, this habit still leads to the extreme difference in temperature inside and outside the vehicle in the summer.
The gap results in fogging; thus, you should decrease the power of the AC more than normal. It means you have shortened the temperature gap and quickly defogged the glass.
Besides, you can roll down a windshield to allow the outside flow to enter your vehicle.
Activate the wipers: Wiper is the best answer for how to defog windshield in summer rain. This component can wipe off the rain drops and defog the surface at the same time.
Open the window: Opening the windows is the fastest way to defog if you don’t mind the heat.
How To Defog Car Windows In The Winter?
Recirculate the air: When you are in the winter days, make use of the Fresh Air Mode button in your vehicle. Once you press the button, fresh flows enter your space, but the inside temperature is retained.
As a result, the temperature gap gets smaller, and the fog will disappear thanks to this balance. Ensure that the Recirculation Mode button is off during this process.
Lower the inside temperature: Another way to minimize the temperature gap is to reduce the heater’s power of your car.
Remember to dress properly and get enough clothing layers as the temperature in the winter is pretty low.
Use the defrost vents: Look for a button called “Defogger button”, whose symbol is a box with three squiggly arrows.
When you press this button, an amount of air with a matching temperature with the surrounding atmosphere will be sent directly to the windows. This process reduces the fogging effectively.
Conclusion
You have been equipped with the answer for how to defog car windows in rain without AC with detailed instructions.
Once you put into practice the advice above, you can save much more time for defogging.
Prevention is better than cure. Try to keep your car’s windshield clean and apply other preventative methods to minimiz the chance of facing this issue.