Should You Use Internal or External Air Circulation When Turning on the Car Air Conditioner in Winter?
2 Answers
When turning on the heater in winter, use the internal air circulation mode. When using the air conditioner, adjust the air vent direction to avoid blowing directly at your face, as this can easily cause fatigue and affect driving safety. Set the air direction to blow towards your legs and feet. Precautions for using the air conditioner in winter: Avoid high temperatures; When using the air conditioner in winter, be careful to avoid excessively high temperatures. In a warmer environment, the body's blood circulation accelerates, which can easily cause swelling. Additionally, going outside afterward can lead to a large temperature difference, increasing the risk of catching a cold, which is not good for health. Moreover, high indoor temperatures can also increase the load on the air conditioner, which is not conducive to its maintenance. Maintain humidity; When turning on the air conditioner in winter, close the doors and windows to improve the air conditioner's efficiency. However, this will reduce the indoor humidity, making the air feel dry. To quickly increase humidity when using the air conditioner, you can place a basin of water indoors or use a professional air humidifier to raise the indoor humidity, which is beneficial for health. Direct vents downward; When using the air conditioner in winter, adjust the vents to face downward. Because hot air has a lower density, it naturally tends to rise and may remain suspended in the upper part of the space, failing to quickly raise the body's surface temperature. By adjusting the vents of a wall-mounted air conditioner downward, you can feel the hot air more quickly, improving the efficiency of the air conditioner.
In winter, when driving in cold weather and using the air conditioning, I find the most practical strategy is to start the car and first use the recirculation mode. This quickly heats up the air inside the car, making it warm within minutes, so you don’t have to freeze your hands and feet. However, remember to switch to fresh air mode once the temperature stabilizes, letting in some fresh air to prevent window fogging and blocked visibility, as well as avoiding dizziness. Don’t keep the recirculation mode on for too long, as carbon dioxide buildup inside the car can cause fatigue and drowsiness, affecting safety. When switching, observe the humidity—if the outside air is dry, the fresh air mode can also help prevent frost. Clean the air conditioning filter regularly to ensure healthy breathing. Overall, switching between circulation modes wisely makes driving more comfortable and efficient.
