Defogging in Winter: Using Cold Air or Hot Air?
2 Answers
In winter, both cold air and hot air can be used to eliminate fogging. Here are detailed introductions to the two methods: 1. Cold Air Defogging: Turn on the air conditioning cold air, press the A/C button, adjust the air vent direction to blow towards the windshield, and set the fan speed to the maximum position. This can reduce the temperature difference between the inside and outside of the windshield, making it less likely for fog to form and achieving the effect of eliminating fog. This method is suitable for emergency quick defogging. 2. Hot Air Defogging: Hot air takes longer to defog than cold air, but using hot air can prevent the windshield from fogging up again.
I've driven quite a few times to figure out this defogging thing in winter. Fogging occurs when warm, humid air inside the car meets cold glass and condenses into water droplets. The first choice is to turn on the air conditioning, as it can quickly absorb moisture. Using cold air defogs faster, showing results in seconds, but you'll shiver from the cold. Using warm air is slower, clearing up within two minutes, but keeps you warm and comfortable. My suggestion is to first warm up the car with warm air in winter, then press the AC button to assist. Don't forget to turn on the external circulation to let fresh, dry air in for better results. Safe driving requires clear visibility, so don't hesitate to deal with fogging immediately. Develop a habit of regularly checking the air conditioning to avoid malfunctions affecting the defogging function.
