How to Use the Car Air Conditioner's Internal and External Circulation?
2 Answers
To use the car's internal and external circulation functions, follow these steps: 1. Start the vehicle to activate the air conditioner for cooling or heating. 2. Simply adjust the control knob, and the display will show the temperature while activating the circulation function. 3. Turn on the A/C switch to operate the blower. 4. Rotate the knob—typically, the left side (marked in blue) is for cooling, and the right side (marked in red) is for heating; choose according to the weather. 5. Adjust the air circulation mode: use internal circulation for cooling and external circulation for ventilation.
I get annoyed during rush hour traffic jams when exhaust fumes and dust fill the air. That's when I press the recirculation button—the icon looks like a small arrow inside a car—to keep the cabin air circulating without drawing in outside pollutants. Once out of the congested area, I switch to fresh air mode, indicated by an outward arrow icon, to bring in outside air and refresh the cabin. Especially in summer with the AC on, recirculation cools the car faster and saves some fuel. But don’t overuse it—keeping it on too long during highway driving can raise CO₂ levels, leading to dizziness. The button is simple to operate, clearly placed on the climate control panel. Making this a habit makes driving healthier and more comfortable, and it helps manage air quality in dusty areas. Remember to use fresh air mode when windows fog up to clear them faster.
