What is the appropriate temperature to set the car air conditioning in winter?
2 Answers
In winter, it is appropriate to set the car air conditioning between 18 to 25 degrees Celsius. The functions of the air conditioning include: 1. Achieving a cooling effect through the continuous circulation and transformation of refrigerant; 2. Drawing in fresh air from outside the vehicle for ventilation and air exchange, preventing window fogging; 3. Utilizing the engine coolant, waste heat, or heat generated by a burner as a heat source for warming, which is then heated by the heater and blown into the cabin by the blower to raise the temperature and achieve a heating effect; 4. Removing dust, odors, smoke, and toxic gases from the air inside the car, making the cabin air fresher, and humidifying the cabin air to increase its relative humidity.
From the perspective of comfortable driving, I find setting the car air conditioning between 22°C to 24°C most suitable in winter. Too high a temperature can easily cause drowsiness, especially during long-distance driving, as excessive warmth can lead to dizziness and unsafe conditions; too low isn't warm enough, making hands and feet cold and affecting driving. Around 22°C provides a warm and comfortable environment, with neither dry nor stuffy air inside the car. Remember to preheat the car before turning on the air conditioning, as using warm air is more effective once the engine reaches operating temperature. Maintaining a stable temperature setting helps minimize the large temperature difference between inside and outside the car, preventing colds after exiting the vehicle. For models with automatic air conditioning, adjusting the fan speed automatically adapts to temperature changes, making it convenient and worry-free to use.