How to Use a Car Defogger?

[SanFernando]

How to use a car defogger: 1. Press the front windshield defroster switch, and the front windshield defroster will start working; 2. Press the rear windshield defroster switch, and the rear windshield defroster will start working. The car defogger switch controls the car defogger, which is used to reduce moisture, fog, and frost on the surfaces of the front and rear windshields and the exterior rearview mirrors to improve visibility. The defogger is mainly composed of wave-shaped blades, plates, clips, and other fixing devices. In wet desulfurization, the absorption tower is prone to generating fog with particle sizes ranging from 10 to 60 microns during operation. The fog not only contains water but also dissolves sulfuric acid, sulfates, SO2, etc., which can cause contamination and severe corrosion of fans, heat exchangers, and flues. Therefore, the wet desulfurization process requires defogging in the absorption equipment, and the purified gas must be defogged before leaving the absorption tower.

[EliasRose]

When it comes to using car defoggers, as a veteran driver with over a decade of experience, I’d like to share some practical tips. On humid days or during cold starts, the windshield tends to fog up, which is particularly annoying. My usual routine is to start the engine first, then turn on the air conditioning system and locate the button with the curved arrow or the vent icon—that’s the defog mode. I set the fan speed to medium-high. In winter, I use hot air, as it helps evaporate moisture, and within a minute or two, the fog clears. On hot and stuffy summer days, I opt for the cold air mode instead. Don’t forget to switch to the external air circulation mode to let fresh air in and absorb moisture, which improves effectiveness. I also like to apply a specialized defogging agent to the inside of the windshield to prevent oil films from worsening the fog. Once you develop this habit, your driving visibility becomes crystal clear, enhancing safety. I recommend new drivers try it too—don’t wait until you’re scrambling while driving. It’s especially useful on rainy days or chilly mornings, making things hassle-free.

[Gordon]

Driving with fogged-up windows is extremely dangerous, so I never take it lightly. Using the defroster is simple: after starting the car, just press the defrost button on the dashboard or select the windshield mode. Don’t set the fan speed too low—turning it up helps clear the fog faster. As for temperature, adjust it according to the season: warm air in cold weather and cool air in hot weather, but the key is to keep the air circulating. I always wait a few minutes until the fog is completely gone before driving. If the humidity inside is high, switching to external air circulation helps more. Regularly clean your windows to prevent dust buildup, which can reduce effectiveness. This small detail is crucial for safety, especially on highways, where a single mistake could lead to an accident. Since making it a habit, I’ve never had any issues, and during car maintenance, I also check the AC filter to keep the system efficient. In short, just press the button, let the airflow clear the fog, and ensure your vision stays sharp.

[Zara]

I've only had my car for two years, and the defroster is actually quite convenient to use. After starting the vehicle, just press the defrost button or adjust the air vent to the windshield position. I usually set the fan speed to the middle setting, and the temperature depends on the weather: warm air works faster in winter, while cold air cools and dehumidifies in summer. The fog clears up in just a few minutes, and the effect is decent. When the weather is humid, I also slightly open the window for ventilation to speed up the process. I make sure to clean the glass during regular car washes to minimize fog formation. It's simple and safe to operate, so even beginners can easily get the hang of it.