How to Use the Internal and External Air Circulation in a Car?

[LeChristian]

Here are the methods for using the internal and external air circulation in a car's air conditioning system: 1. On the control panel of the car's air conditioning, there is a button to switch between internal and external circulation. You can toggle it using this button. 2. When driving in congested urban areas, it is recommended to use the internal circulation mode. For long-distance trips or highway driving, the external circulation mode is advisable. Recommendations for using internal and external air circulation in cars: 1. The car's air conditioning system is equipped with an air filter, which is designed to filter out dust and particulate matter from the air. 2. The air filter needs to be replaced regularly. Failure to replace it for an extended period can result in unpleasant odors in the car's air conditioning and can be harmful to the health of passengers. 3. When replacing the air filter, it is important to choose products from reputable brands.

[McReid]

I usually drive to and from work and have the habit of adjusting the air circulation based on road conditions. In heavy city traffic or areas with strong exhaust fumes, I press the recirculation button to prevent pollutants from entering the car, ensuring a safer and healthier environment. When it's hot, using recirculation mode with the AC helps retain cool air inside, making the car cool down faster and saving energy. During long highway drives or when there are many passengers, I switch to fresh air mode to let in outside air, improving comfort and reducing drowsiness. Using fresh air mode in rainy or foggy conditions helps minimize window fogging and enhances visibility. Remember not to keep recirculation on for too long to avoid CO2 buildup—just switch to fresh air mode for a few minutes periodically. It's simple to operate; most cars have a dedicated button, and the dashboard displays an indicator.

[MacMorgan]

As someone who values quality of life, I believe using the car's air recirculation mode correctly can significantly enhance driving comfort. The recirculation mode is suitable for areas with poor air quality such as industrial zones or construction sites, helping avoid inhaling dust and unpleasant odors. The fresh air mode should be activated during clear weather, especially in spring and autumn, allowing natural airflow to prevent nasal discomfort or dry skin. In daily use, it's best to alternate between modes when running the AC for extended periods: start with recirculation for rapid temperature adjustment, then switch to fresh air mode to maintain freshness and prevent drowsiness from prolonged enclosure. Additionally, the cabin air filter should be replaced regularly - I change mine every six months to ensure optimal filtration. During long highway drives, using fresh air mode more frequently helps maintain alertness, which is particularly helpful against driver fatigue. In summary, flexible switching combined with proper maintenance details makes car life more enjoyable.

[JeffreyAnn]

I pay close attention to fuel expenses while driving and know that proper use of the air recirculation can help save money. The recirculation mode is more efficient when the air conditioning is on, as the compressor doesn't have to work excessively, consuming less energy. In summer, it helps cool down the car faster in high temperatures, and in winter, it helps retain warmth. However, it shouldn't be used continuously, as poor air quality inside the car can affect health. It's recommended to use recirculation for short city trips and switch back to fresh air mode on long highway drives to save energy and prevent carbon buildup. Activation method: There's a recirculation button on the car's control panel—just press it. Regular maintenance of the air conditioning system is also crucial to avoid blockages that increase fuel consumption.