What Mode Should the Car Air Conditioning Be Set to When Driving on the Highway?
4 Answers
When driving on the highway, it is best to set the car air conditioning to the external circulation mode, or start with internal circulation and then switch to external circulation after a while to ensure smooth air flow inside the car. Below are the relevant introductions: Internal Circulation: The so-called "internal" refers to the air inside the car. When the internal circulation mode is activated, the air is confined within the car, and outside air cannot enter. This helps maintain a constant temperature inside the car, as internal circulation significantly reduces the frequency of air exchange between the inside and outside, thereby also lowering fuel consumption. External Circulation: External circulation involves the exchange of internal air with the outside air, keeping the air inside the car fresh. This provides the driver with a comfortable driving experience and is also beneficial for health by allowing the inhalation of fresh air.
When driving on the highway, it's generally best to keep the car's air conditioning in recirculation mode. High speeds and strong winds on highways can cause dust and exhaust fumes to enter the car through fresh air intake, affecting air quality. Using recirculation blocks these contaminants while improving cooling/heating efficiency, saving fuel and hassle. I particularly recommend this method for long-distance driving as recirculation cools the cabin faster without stuffiness. But remember safety - briefly switch to fresh air mode for about a minute every hour to prevent window fogging and maintain visibility. This technique works especially well in summer heat and remains effective in winter. Always check if your cabin air filter is clean, as clogs can reduce ventilation efficiency. Road safety comes first.
I often drive on highways and set the car's air conditioning to recirculation mode. This way, the AC cools down faster, and I don't have to worry about hot air from outside rushing in, especially on scorching days, making the driving experience much more comfortable. At high speeds, wind resistance is significant, and using the external air intake can easily bring in odd smells and dust, whereas recirculation keeps things much fresher. It's also more fuel-efficient since the AC doesn't need to process additional outside air, saving energy. Comfort is key—on long drives, I set the temperature and let the recirculation run steadily to prevent motion sickness or breathing difficulties for my family. For ventilation, briefly switching to external air intake is a smart move to prevent fogging and odors. Remember to maintain the AC system regularly and ensure the filter is up to date.
When driving on the highway, I usually select the recirculation mode for the car's air conditioning. This mode reduces the intake of external air, provides efficient ventilation at high speeds, and prevents the air conditioning from wasting energy cooling hot air, thereby improving energy efficiency and saving fuel costs. Simply put, using recirculation maintains stable airflow inside the car, ensuring good air quality; the air conditioning adjusts temperature faster, enhancing comfort. Considerations include wind noise—highway winds are strong, and using external circulation can be noisier. It's recommended to occasionally switch modes for ventilation to prevent fogging, prioritizing driving safety.
