Last Updated on May 29, 2023 by Rose Morah
If your car windows keep fogging up while driving then this article will help you solve the problem.
Sometime you may find that none of whatever measures you take seem to solve the problem.
So, the first thing you need to know is whether your windows are fogging on the inside or on the outside.
That’s because you might be using measures to defog the car windows on the inside but the real problem is on the outside (fogging on the outside) or vice versa.
How to keep car windows from fogging up on the inside while driving
If your car windows are fogging up on the inside, this means that you will need to increase the temperature of the windows and reduce the humidity inside the car.
This can be solved in the following two ways:
- Turn on the A/C
Turning on the A/C help take out the moisture in the air, which keep the windows from fogging up.
That’s because the A/C is not only designed to control the temperature in the car, but also lower the relative humidity thus drying the air inside.
I’d recommend setting your car’s A/C timer to start 20 minutes before you leave, to help with the fogging windows.
|The AC in your car conditions the air inside.|
- Turn up the heat
Turning up the heat will help increase the temperature of the car windows.
Therefore, I’d recommend turning on the A/C and heat to keep the windows from fogging up while driving.
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How to keep car windows from fogging up on the outside
If your windows are fogging up on the outside, this is what I’d recommend:
- Warm up the inside of the car
You can warm up the inside of the car by turning the heater up. This will help keep the windows from fogging up from the outside.
Therefore, you need to turn on the heat high to heat up the windscreen.
You may also need to warm up the engine to get max heat that will warm windows.
- Throw a blanket or a towel over the windows
From experience, this helped us keep the car windows from fogging up overnight.
The towel might end up freezing but less ice will end up forming on the windows.
- Park your car in the garage
Parking the car in the garage will help keep the windows from fogging up overnight.
- Idle the car till it warms up
Idling the car till it warms up will help defog the car windows before you depart.
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What if none of the above tips work?
I’d recommend you go through our previous article on how to keep car windows from fogging up without heat.
We have covered some of the factors that may be causing windows to fog up even after trying everything mentioned in this article.
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