Does a 24V car fan consume a lot of power?
2 Answers
24V car fans do not consume much power, typically drawing a current of 1A~2A. Below is relevant information: 1. Function of car fans: Car fans blow towards the radiator to cool it and dissipate heat from the engine. They should not blow towards the engine, as this would increase the engine's temperature. When the fan rotates, it creates suction, accelerating airflow along the axial direction, thereby speeding up the cooling of the coolant passing through the radiator core, while also cooling the engine block and surrounding components. 2. Engine cooling system: Automotive engines operating in high-temperature environments must be properly cooled to maintain an optimal working temperature, ensuring good performance, durability, and meeting exhaust emission requirements. The engine cooling system plays a crucial role here, mainly consisting of components such as the cooling fan, radiator, and thermostat.
I used to have a 24V truck fan installed in my previous truck, which I frequently used during long-distance summer hauls. In terms of power consumption, I don’t think it’s too significant—typically ranging between 50W to 100W. For instance, my fan was 80W, and with the engine running, it hardly made any impact since the alternator was supplying power. However, if left on while parked, the battery would drain quickly, especially on scorching days when the fan ran continuously. Once, I forgot to turn it off, and after just half an hour, the truck wouldn’t start—it was quite a stressful situation. My advice is to ensure the engine is running when using it or set a timer. It consumes much less power than air conditioning but still more than small fans, so it’s important to monitor battery health, check the battery condition regularly, and prevent premature aging.
