What is the appropriate temperature for car heating?

[HarrisonAnn]

Car heating should be set between 18°C and 25°C. The most comfortable temperature for humans ranges from 20°C to 25°C. Exceeding 28°C can make people feel uncomfortably hot, while temperatures below 14°C may cause a feeling of coldness. Therefore, it's best to maintain the car temperature between 18°C and 25°C. Generally, a temperature difference of no more than 10°C between the inside and outside of the car is advisable. Below are some relevant points: 1. Excessive temperature: If the temperature is too high, the significant difference between inside and outside temperatures can easily lead to catching a cold when exiting the vehicle. Conversely, if the temperature is too low, it affects driving comfort. 2. Prolonged use: When the heating is on for an extended period, it's necessary to ventilate the car. After running the car's heating system for a long time, many people feel noticeably warm but may also experience a suffocating sensation. This is because the car is an enclosed space, and with multiple passengers, the continuous exchange of heat from breathing can make the air feel stagnant.

[LeMaria]

I find setting the car's heating system between 20 to 22 degrees Celsius is most comfortable - this temperature range provides warmth without causing stuffiness. With over a decade of driving experience, I've found this range keeps the body in an ideal comfort zone, neither too cold nor too hot. Higher temperatures can cause sweating and distraction, while lower settings may leave hands and feet chilly. My routine is to let the engine warm up for a few minutes before turning on the heater in winter, then setting the fan to medium speed to avoid sudden temperature shocks. I also slightly open windows for ventilation, which helps air circulation, prevents CO₂ buildup and reduces window fogging. Wearing light clothing while driving allows for lower temperature settings more comfortably. When driving in northern regions with significant temperature variations, briefly raising it to 24 degrees is acceptable, but I recommend maintaining around 20 degrees long-term for optimal comfort and safety balance.

[AdalineRose]

From a health perspective, the car heater temperature should not be set too high. I usually keep it around 19°C. Excessive warmth can cause dry skin, throat discomfort, and even increase fatigue. As someone who prioritizes wellness, I always activate the air circulation system when using the heater, alternating between internal and external circulation to prevent dehydration caused by dry air. Especially during long-distance driving, maintaining the temperature between 18°C to 21°C helps keep the body relaxed and alert. Overheating can induce drowsiness and increase accident risks, so I always carry a water bottle to remind myself of hydration. Considering cabin humidity, it's best to use vehicles with built-in humidifiers or simply treat the air with a portable humidifier. This adjustment ensures both comfort and physical wellbeing, preventing discomfort during cold-weather driving.

[CamilaDella]

For energy efficiency, setting the car's heating to around 21°C is most economical. As an environmentally conscious person, I know that each degree increase in temperature significantly raises energy consumption, whether in electric or fuel-powered vehicles. 21°C provides sufficient warmth, and if it gets colder, using seat heaters or steering wheel heaters consumes even less energy. In winter, wearing thicker clothes and minimizing high heating settings saves electricity and reduces carbon emissions. Avoid setting temperatures above 25°C—it's simply wasteful. From urban driving experience, moderate temperatures also protect in-car systems, preventing overheating and equipment wear. With simple adjustments to settings, you can stay warm in cold weather while reducing environmental impact and costs.

[SanLeonardo]

Personal experience suggests setting the heating temperature based on family members' needs, with around 22°C being ideal. When children are present, they require slightly higher temperatures as they are more sensitive to cold, so I set it to 23°C. When driving alone, 20°C is sufficient. Excessively high temperatures can cause facial dryness or drowsiness, which is dangerous while driving. I adjust the airflow direction to avoid direct blowing on the face and keep the fan speed moderate to prevent excessive noise. Additionally, I monitor the risk of window fogging and promptly use the external circulation or defogging function as needed. Considering the temperature difference between inside and outside the car, I may briefly set it to 24°C when it's below freezing outside, but quickly readjust to a comfortable level. Balancing the comfort of elderly and children is crucial—maintaining a pleasant cabin environment without causing distractions that affect driving.

[JadeMarie]

From a safety perspective, the heating temperature should not be too high. I recommend 18 to 20 degrees. Having driven for over ten years, I know that excessively high temperatures can easily cause driver drowsiness, especially during long-distance driving. Around 18 degrees helps improve focus without overly relaxing the body. At the same time, correctly setting the heating prevents windshield fogging, which can impair visibility. If feeling drowsy, immediately lower the temperature or open the window for ventilation to stay alert. Avoid setting the fan speed too high, as it can cause dizziness—maintain a moderate airflow. Using heating in cold weather is necessary, but keep it within a comfortable range to ensure safe driving throughout the journey.