Do You Need to Turn on AC When Driving in Winter?

1 Answers
AndrewAnn
07/24/25 5:08pm
You don't need to turn on AC when driving in winter. The AC button controls the air conditioning compressor, which is essential for cooling in summer. However, the heating system simply utilizes the car's internal heat circulation and doesn't require the AC compressor to be activated. Therefore, to use the heater, you only need to adjust the temperature control without pressing the AC button. The warm air comes from the heat generated by the engine. When the engine's cooling system dissipates heat, a fan directs this heat into the car's interior to provide warmth. When the heater is not in use, the fan stops, and the vents close, allowing the heat to dissipate into the atmosphere. Thus, the car's heating system recycles waste heat and doesn't consume additional fuel.
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