What is the normal temperature for car air conditioning in winter?
3 Answers
In winter, the normal temperature for car air conditioning is between 18°C and 25°C. It is recommended to maintain a temperature difference of less than 10°C between the inside and outside of the car. The comfortable temperature range for the human body is 20°C to 25°C. If the temperature is too high, the large temperature difference between the inside and outside of the car can easily cause colds, while a temperature that is too low will affect driving comfort. When starting the car in winter, owners usually switch the air conditioning to heating mode. However, since the temperature of the radiator is very low when the engine starts in winter, it is not advisable to set the air conditioning temperature too high. Setting the temperature too high when the radiator is cold will increase the burden on the engine. The correct method is to wait for the engine to warm up, then turn on the heating mode, set the air circulation to external circulation to expel the cold air inside the car, and then adjust the air circulation to internal circulation.
In winter, I usually set my car's air conditioning temperature between 22 to 24 degrees for optimal comfort - too cold makes me shiver, while too hot causes drowsiness, which is especially crucial during long-distance driving. I remember when I first got the car, setting it at 28 degrees caused severe window fogging that obstructed visibility. Through trial and error, I discovered the sweet spot around the low 20s that provides both warmth and dryness. For vehicles with automatic climate control, the Auto mode works wonderfully as it automatically adjusts fan speed to maintain stable temperatures based on cabin conditions. Personally, I prefer letting the engine warm up for a few minutes after starting before turning on the AC, which helps the system reach optimal performance faster while protecting it. Never overlook the windshield defrost function - on frosty winter mornings, combining slightly lower temperatures with defrost mode ensures safer driving.
I think setting the car air conditioning to around 22°C in winter is quite reasonable mainly for fuel economy. In the past, I often set it above 26°C and noticed a significant increase in fuel consumption because the compressor had to work harder, increasing the load. Research shows that each degree increase can consume more fuel, and a moderate temperature between 20-24°C is both comfortable and economical. Cars with automatic air conditioning are even smarter as they optimize energy consumption, such as gradually adjusting when there's a large temperature difference between inside and outside. Also, avoid setting the temperature too high to prevent stuffiness in the car, which can cause drowsiness, especially crucial for staying alert during high-speed driving. It's advisable to check the manual as some car models have recommended values for reference. Developing a habit of alternating between internal and external air circulation ensures air quality and also helps with air conditioning efficiency.
