What to Do When the Windows Fog Up?
2 Answers
Here is the relevant introduction about car window fogging: 1. Air Conditioning Defogging: This is the simplest method. Just turn on the front window defogging mode, set the fan speed to maximum, turn on the A/C switch, and adjust the temperature to the lowest. The fog on the windows will disappear shortly. Additionally, some models have electric heating for the rear window and side mirrors. Simply press the switch, and the fog will clear in about a minute. Many vehicles now also feature a one-touch defogging function, which is convenient and quick to use when fogging occurs. 2. Air Convection: This method is suitable for very few situations. Opening the windows increases air convection, reduces the temperature difference inside and outside the car, and weakens the conditions for fog formation. While this method seems economical, it is rarely practical. For example, if it is raining outside, you cannot keep the windows open, and the incoming air is quite limited. 3. Defogging Spray: Simply spray it evenly on the glass surface and wipe it clean with a dry towel. The principle involves using surfactants to leave a protective film on the glass surface, altering the surface tension of water molecules, causing fog droplets to coalesce into larger droplets that do not obstruct vision. This can also be applied to other car windows, especially the side mirrors. 4. Homemade Defogging Spray with Dish Soap: Mix dish soap and water in a 1:6 ratio, store it in a bottle, and spray and wipe before traveling. The effect is comparable to commercial defogging sprays, though the durability is slightly inferior.
Fogging up is really annoying, mainly caused by the large temperature difference between the inside and outside of the car plus high humidity. I usually deal with it in a few steps: first, turn on the air conditioning defogging mode and blow cold air directly onto the windshield. The fog will clear in less than a minute. If it's too cold in winter, switching to warm air also works, although the fog might get worse initially, but it will clear up after about three minutes. Don't forget to turn on the rear windshield heating button—those electric heating wires clear the fog especially quickly. If you're on the highway and can't adjust the air conditioning, I recommend applying an anti-fogging agent to the inside of the glass in advance. This stuff costs just over ten yuan a bottle, and one application can last half a month. Also, when parking, avoid drying wet clothes inside the car, and shake off water from your umbrella before getting in on rainy days. These small habits really help reduce the chances of fogging up. Keep a clean microfiber cloth in the car for emergencies—it wipes more thoroughly than tissues and leaves no streaks.
