How to Defog a Car?
2 Answers
Generally, if a car owner notices fog on the windows, they can crack open the side windows slightly. After some time, the fog inside the car will gradually dissipate. Simply turn on both the car's fan and the air conditioning switch simultaneously, then direct the cold air toward the front windshield. The fog will disappear quickly. Just spray a defogging agent onto the inner surface of the car glass and wipe it clean. Typically, one application can prevent fogging for about ten days.
After years of driving, I've mastered the skill of dealing with foggy windows through practice. As soon as I notice fog on the glass after getting in the car, I immediately press the defog button—usually the fan icon switch in the climate control area—which is very convenient. Next, I adjust the fan speed to medium-high, like level 3 or 4. Don't worry about the noise; strong airflow quickly disperses the moisture. At the same time, I set the temperature: warm air works best in winter, while cold air is ideal for cooling down in hot summers. Switching to recirculation mode is crucial to let fresh air in and carry away the humidity inside the car. When there are many passengers, the fog tends to worsen, so I remind everyone to avoid excessive talking to minimize saliva-induced fogging. During stops, I quickly wipe the inside of the windows as a preventive measure. Making it a habit to check the climate settings before starting the car ensures safety and peace of mind—no last-minute scrambling needed.
