How to Use Engine Heat for Warming?
2 Answers
Using engine heat for warming is done by turning on the heating function of the air conditioning system, which utilizes the heat generated by the engine. The heating principle of a car's air conditioning system relies on the engine's heat. When the air conditioning is set to heat, the high-temperature coolant from the engine flows through the heater core. At the same time, the air blown by the fan also passes through the heater core, allowing the air conditioning vents to blow warm air. Instructions for using the car's air conditioning heating: The heater core is essentially a heat exchanger. It is recommended that drivers avoid turning on the heating immediately after starting the engine, as the vents will initially blow cold air, and doing so can hinder the engine from warming up quickly. After driving normally for 10 to 20 minutes, the heating can be turned on. If the heating is activated right after starting the engine, it will slow down the engine's warming process and increase fuel consumption.
After driving for a long time, I found that using the engine for heating is the most convenient method. After starting the car, let the engine run for a few minutes until the coolant temperature gauge rises to the normal range, such as when the needle reaches the midpoint. Then turn on the air conditioning system, rotate the temperature control knob to select the heating mode, and set the fan speed higher. The heat comes from the engine coolant flowing through the heater core, which warms the air before it is blown into the cabin. If it's too cold in winter, I usually preheat the engine for a few minutes before operating to avoid blowing cold air. Remember to maintain the proper coolant level—low levels reduce heating efficiency. Regularly checking and replacing the coolant prevents rust and blockages. Don’t forget to clean the radiator dust, as this improves efficiency. This system utilizes the engine's waste heat, making it eco-friendly and fuel-efficient, and more economical than onboard electric heaters. I often use it during my commute to quickly dispel the chill.
