Do You Need AC for Heating?

[SanGeorge]

When driving in winter, you do not need to turn on the AC switch for heating. Here is some relevant information: 1. The AC button controls the air conditioning compressor. In summer, when using air conditioning, you must turn on the AC button to activate the cooling function. However, heating only utilizes the internal heat circulation of the car and does not require the air conditioning compressor to be activated. Therefore, to use the heating function, you only need to adjust the air conditioning controls without turning on the AC switch. 2. The heating system relies on the heat generated by the engine during operation: After the engine's cooling system dissipates heat from the engine, a fan directs this heat into the car to provide warmth. When the heating is not in use, the fan stops, and the heating vents close, allowing all the dissipated heat to escape into the atmosphere. Thus, car heating is a form of waste heat recycling and does not consume additional fuel.