What to Pay Attention to When Using Car Heater?
3 Answers
When using the car heater, pay attention to the following points: 1. Do not sleep in the car with the heater on while the vehicle is stationary. When the engine is not running, high concentrations of carbon monoxide can accumulate inside the car. If the windows are closed, this may lead to poisoning or suffocation. 2. Do not smoke inside the car when the heater is on. When the heater is running, the windows are usually closed, and certain components in the smoke can adhere to the surface of the evaporator. During humid or rainy conditions, mold may grow, which can pollute the car's interior when the heater is used again. 3. Do not turn on the AC button. The heater uses the car's own heat cycle for warming, so there is no need to activate the air conditioning, as this will increase fuel and electricity consumption.
When using the car heater, I usually start the engine a few minutes before driving to work or home, allowing the coolant temperature to rise for about 3-5 minutes before turning on the heater. This helps it warm up faster and saves fuel. Don’t set the temperature too high—around 20°C is comfortable enough, as overly dry air can irritate your throat. Adjust the fan speed to a moderate level, and using recirculation mode in winter heats the cabin quicker. However, remember to switch to fresh air mode periodically to avoid oxygen depletion and stuffiness. If parked in a garage, never idle with the heater on for too long—carbon monoxide poisoning is a serious risk. Also, during annual maintenance, have the HVAC system inspected and the air filter cleaned. If you notice unusual fan noises or insufficient heating, it might indicate low coolant or a water pump issue—visit a repair shop promptly to avoid breakdowns disrupting your trips.
Through years of driving experience, I've summarized key safety and efficiency tips for using car heaters. In cold weather, always warm up the engine for a few minutes first, waiting until the coolant temperature stabilizes before turning on the heater. Set the temperature no higher than 25°C to avoid excessive fuel consumption. Adjust fan speed appropriately - too high causes annoying noise, while too low provides insufficient warmth. Be flexible with air circulation modes: use recirculation for rapid heating but switch to fresh air mode every 30 minutes to prevent stale air buildup. Never idle with the heater on in enclosed spaces like underground parking lots due to dangerous carbon monoxide accumulation. Regularly check coolant levels and cabin air filters to prolong heater lifespan. If you detect unusual odors or insufficient heat, promptly inspect for potential pipe blockages or leaks.
