How To Defog A Car Windscreen

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Have you ever experienced driving during a cold day and suddenly your windscreen starts fogging up?

This is one common problem drivers face especially during the winter and rainy seasons. It’s not only annoying but can also be a real safety hazard while driving, as it can impair your vision.

In this article, we’ll look at some ways you can defog your windscreen. But first, let’s find out what causes it.

What Causes A Windscreen To Fog?

There are two main reasons for a windscreen to get foggy. The first is when the outside temperature is cold, and the second is when there’s humidity inside the car.

When the outside temperature is cold, the glass of the windscreen will be colder than the air inside the car.

And when the warm air touches the cold glass, it causes the moisture in the air to condense on the glass resulting in a foggy windscreen.

The second reason is when there’s humidity inside the car. This can be caused by things like breathing and sweating (because your body releases heat).

Ways to Defog Your Windscreen

There are a few ways you can defog your windscreen.

Open Your Windows

One way is to open your windows while driving. This will allow the air to circulate and will help to remove moisture from the air.

However, this might not be an option if you are driving in the rain, during cold winters, or in dusty places.

Turn On the Fan

Another way is to turn on the fan in your car, put it on full blast, and set it to “fresh air”. This will help to remove the moisture from the air and stop it from condensing on your windscreen.

Use Your Vehicle’s AC

By far, the most effective way to demist your windscreen is by turning on your car’s AC.

It may sound counterintuitive, but Air conditioning air is extremely dry so it will keep moisture out of the air.

But what if it’s winter? No problem! You can turn on the AC while still using the heater.

The heater will prevent the air from being cold while the AC blows out dry air keeping the atmosphere dry, therefore, preventing fog on your windscreen.

When you’re doing this, be sure to set your AC to “fresh air” and not “recirculate” because fresh air holds less moisture than recirculating air.

Apply An Anti-Fog Spray

You can also buy products that you can put in your car that will help to remove moisture from the air. These are available from most car accessory shops.

Frequent Fogging Issues

If you have a windscreen that’s constantly misting up, it’s also important to have a look at your compressor or get it checked by a mechanic. There could be a problem with your car’s ventilation system.

Final Thoughts

Driving with a misted-up windscreen can be dangerous. It can impair your vision and make it difficult to see what’s ahead of you.

By following the tips above, you can help to prevent your windscreen from fogging up to ensure a more pleasant and safer driving experience.

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