How to Use Engine Heat for Warming?

[ArianaLee]

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.

[DiZachary]

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.

[McAnthony]

As a commuter, I rely on the engine for warmth every day. Before heading out, I start the car, wait for the engine to warm up, then adjust the air conditioning to the heating mode, turn the temperature knob to the high end of the red zone, and the fan blows out warm air. This heat is converted from the cooling system, and when the car is moving, the airflow accelerates the heating. If stopped at a red light, it can still be used without affecting fuel consumption. I've found that starting the engine when it's cold is ineffective, so I wait for the engine to warm up for two or three minutes before operating. I usually check the radiator at the front of the car for any blockages that might affect circulation. I test the coolant level once a week and top it up promptly if it's low. This method is much more effective than an electric heater, without consuming extra electricity. I use it to keep warm during my commute, ensuring comfort and efficiency while avoiding the cold inside the car.

[VonFaith]

Using the engine for heating is not difficult. After starting the car, wait for the engine to warm up until the coolant temperature gauge shows normal values. Then turn on the air conditioning and set it to heat mode, increasing the fan speed. The heat source comes from the engine coolant circulating through the heater core to warm the air. Just ensure the cooling system is in good condition. This method is particularly practical during long-distance driving.