4 simple tips for dealing with foggy car windows in the rain.

Car windows fogging up when driving in the rain is a fairly common occurrence. Here are a few tips to help drivers deal with it quickly.

According to experts, when a car is driven in the rain, the temperature imbalance between the inside and outside of the vehicle causes the windows to fog up. When it rains, the outside air temperature drops, and the rain and wind cool the car windows.

The cabin is both hot and humid: heat radiating from the occupants and electronic devices causes the temperature inside the cabin to be higher than outside; at the same time, after a certain amount of time inside the car, moisture from the car and from people's breath creates very high humidity in the cabin.

Therefore, the high humidity in the cabin meets the cold surface of the car windows, causing condensation. Tiny water droplets form on the inside of the windows, making them foggy. This phenomenon is similar to condensation on the outside of a glass of cold water. To clear the fog, you need to dissolve the condensation. Drivers can refer to the following tips:

1. Lower the window.

Some experienced drivers say that if the air conditioning is broken or there are rain deflectors and it's not raining heavily, drivers can lower each window by about 5-10 cm and turn on the fan to circulate air inside and outside the car. However, this method is not widely applicable because water from outside can splash dirt inside the car, and the problem is not completely solved.

2. Turn on the fan and draw in outside air.

In that case, the airflow should be directed towards the windshield. This method is also not very effective if there are many people in the car.

3. Turn on the defroster.

This is an effective but not foolproof method. Using the defroster will clear the fog immediately, but in reality, drivers usually only turn it on for a few minutes until the fog clears, and combine it with the fourth method: turning on the air conditioner to a cold setting.

4. Turn on the air conditioner to the cold setting.

Some people mistakenly believe that turning on the air conditioner to the hot setting will remove the condensation, but in reality, this will only make the windows fog up more. The correct solution is to turn on the air conditioner to the cold setting to remove the moisture, which will clear the fog from the windows within a few minutes. You can set the temperature to a comfortable level for the occupants, but it must be in the cold setting (A/C).

It's not uncommon for windows to fog up even when the air conditioning is on cold; however, this is external fogging caused by the cold air inside the windows, primarily from the air vents. The simple solution is to avoid directing the cold air towards the windshield and side windows.

According to Autodaily