What is the ideal temperature for car air conditioning in summer?
3 Answers
During summer, the car air conditioning can be set between 21-25°C, while in winter it can be set between 25-28°C. The temperature difference between the interior and the external environment should not be too large, as it may cause discomfort to passengers. Generally, the temperature difference between the inside and outside of a car should be within 10°C for sedans and 8-12°C for large buses. Below is an introduction to the working principle of the air conditioning system: After the engine starts, turn on the A/C switch, the electromagnetic clutch engages, transferring the engine's power to the compressor. The compressor circulates compressed refrigerant to the evaporator, where the refrigerant vaporizes, absorbing heat and producing cold air. The blower then delivers this cold air into the cabin.
When it comes to using air conditioning in the car during summer, I have deep personal experience. I often see people setting the temperature as low as 18°C for quick cooling, only to end up catching a cold or even getting headaches after getting out of the car—it's really not good for the body. I recommend keeping it at 24-25°C, as a moderate temperature difference helps avoid harm. First, open the windows to ventilate before closing them and turning on the AC, which prevents excessive humidity inside and makes it feel more comfortable. If the air feels too dry or stuffy, try switching to a bit of fresh air mode (external circulation) instead of keeping it on recirculation, which can accumulate dust. Health is a big concern—prolonged exposure to extreme conditions can weaken immunity. It’s best to use auto mode or manually adjust the airflow for even cooling. In short, a moderate temperature ensures safer trips for the whole family, especially for kids and elderly passengers in the back seats—don’t let them get too cold.
I think setting the air conditioning at around 26°C in summer is the most practical choice—it saves fuel and is environmentally friendly. Running the AC compressor at high levels increases engine load, causing fuel consumption to spike, especially in traffic jams where it becomes more costly. I often notice strong jerking in the car when the AC is set too low, indicating significant energy waste. Adjusting to a slightly higher temperature, like 26°C, ensures stable operation with fewer shutdowns, making it both comfortable and economical. When starting the car, don’t rush to turn on the cold air—first, briefly open the windows to release hot air, then close them and adjust the temperature. Also, remember to clean the AC filter regularly, as dust buildup can reduce efficiency. Energy saving isn’t just about cutting costs; reducing emissions also helps the environment. With global warming worsening, contributing even a small effort while driving is worth advocating. Over time, this approach keeps both your wallet happy and eases the burden on our planet.
