How to Defog the Car?

[Morris]

Methods to defog the car are as follows: Turn on the air conditioning: After the engine warms up, turn on the cold air blower, temporarily close other air vents, and concentrate the airflow directly on the glass surface to quickly disperse the fog. Open windows for ventilation: You can use the warm or cold air from the car's air conditioning to solve the problem. The car's air conditioning has a defogging function for the windshield. Use defogging products: Before driving, spray a little defogging agent on the windshield, rear window, four side windows, and exterior rearview mirrors. This defogging spray forms a film on the glass surface, making it harder for fog to form.

[Mallory]

Fogging on the car windows is quite annoying, and I often encounter this issue while driving, usually caused by large temperature differences between inside and outside or high humidity. The simplest method is to directly turn on the air conditioner's dehumidification mode and adjust the air vents to blow towards the front windshield. It's even better to turn on the external air circulation, as it allows dry outside air to enter. Using warm air in winter also works, though the effect is slower, it can still disperse the fog. Safety first—don't panic when fogging occurs; slow down and pull over before dealing with it. Additionally, keeping the windows clean is crucial. Regularly wipe them with a microfiber cloth to prevent excessive oil film buildup. Placing a small dehumidifier box or anti-fog spray in the car is also helpful, especially preparing before the rainy season.

[McEllie]

I always believe prevention is better than cure, and fogging inside the car is mostly caused by condensation. Develop good habits by checking door seals and the air conditioning system before departure to avoid excessive humidity. Turn on the fan directed at the windshield immediately after starting the car, using cold air for effective dehumidification. Clean both sides of the windows before long trips—clean glass is less prone to fogging. In rainy weather, turn on the AC in advance with moderate fan speed. Here's another tip: don't turn off the AC immediately after parking; let it blow dry air inside for a while. Over time, you'll experience much less fogging, making driving safer and more worry-free.

[SanAxel]

Fogging inside the car is most common, especially when getting in the car on cold days. I always use the most straightforward method: turn the air conditioning to the windshield defrost mode while turning on a bit of cold air for dehumidification. If the fog is not heavy, quickly opening the windows for a minute or two to ventilate will do. Remember, using the external air circulation is more effective than the internal one because it brings in fresh, dry air. There are many buttons in the car, and the defogging button is specifically designed for this purpose—just press it to solve the problem. Don't wait until the fog is heavy to deal with it; act as soon as you notice it while driving to avoid blurred vision.