What is the ideal temperature for car air conditioning in summer?
4 Answers
In summer, the car air conditioning is generally set at 26℃, as the comfortable temperature range for the human body is between 24℃ and 27℃. Additionally, the local weather temperature should be considered, and the temperature difference between indoors and outdoors should not exceed 5℃. If the air conditioning temperature is set unscientifically in summer, leading to a large temperature difference between indoors and outdoors, it may cause air conditioning-related illnesses. Common air conditioning-related illnesses include the following four types: 1. Respiratory diseases: Once cold air breaches the fragile "defense line" of the respiratory tract, it can cause symptoms such as coughing, sneezing, and a runny nose, which are signs of upper respiratory tract infections. 2. Brain nerve disorders. 3. Joint pain. 4. Skin allergies: For chronic skin conditions, sweating in hot weather can significantly irritate the skin, causing unbearable itching; staying in an air-conditioned room for too long can also lead to dry skin and itching.
After using air conditioning for so many years, I find setting it to 22°C in summer is the most comfortable. When it's scorching hot outside, you just want to blast cold air as soon as you get in the car, but don't set it too low—below 18°C is too chilly, making you prone to catching a cold and wasting fuel. I usually roll down the windows first to let out the hot air before turning on the AC, which cools faster and saves fuel. Also, avoid randomly adjusting the temperature—keeping it within this range consistently is better for the car, preventing the compressor from overworking. Another tip: don’t point the airflow directly at people; aim it toward the roof or footwell to distribute cooling evenly, so rear passengers won’t complain about uneven temperatures. On highways, maintaining a steady temperature reduces fatigue, helping you stay focused and drive safer. In short, find your ideal setting—comfort and efficiency matter more than just chasing the coldest temp.
To save fuel and be environmentally friendly, I recommend setting the air conditioning to around 25 degrees Celsius. On scorching summer days, setting it too low, like 18 degrees, will significantly increase fuel consumption and electricity usage, which greatly impacts the range of electric vehicles. I usually use the auto mode, where the system adjusts the fan speed automatically after setting the temperature, avoiding frequent manual adjustments. Here's another tip: don't turn off the engine and air conditioning immediately when parking; wait for the temperature to drop before shutting off the engine to protect the compressor. On extremely hot days, I first turn on the recirculation mode for a minute or two to cool down quickly, then switch to fresh air mode to keep the air fresh and prevent the cabin from becoming too dry or causing dizziness. Large temperature differences can easily lead to colds, especially when elderly or children are in the car, so it's better to adjust the temperature gently. Choosing this temperature not only ensures comfort but also helps save money on fuel, reducing consumption by 1-2 liters per 100 kilometers. Why not give it a try?
In summer, I simply set my car's AC to 24°C - straightforward and practical. Before heading out, I check the weather on my phone. If it's above 35°C outside, I set the AC between 22-25°C, keeping the temperature difference within 10°C to avoid discomfort. Always ventilate the car before turning on the AC for faster cooling. Using auto mode saves manual adjustments. When it's extremely hot, switch to fresh air mode (external circulation) to prevent dizziness from oxygen deprivation. Proper temperature control prevents AC-related illnesses - healthy and hassle-free.
