Should the AC be turned on when using the heater?

1 Answers
DiThomas
07/30/25 6:54am
When using the heater in the car, there is no need to turn on the A/C switch. This is because the warm air is generated by the heat from the car's engine and circulated into the cabin through the air conditioning system, without requiring the compressor to operate. Turning on the A/C not only fails to improve the heating effect but also increases fuel consumption. Correct usage of the A/C button: 1. The A/C button controls the on/off function of the air conditioning compressor. In summer, drivers need to turn on the A/C button along with the cold air setting to activate the cooling function, allowing cold air to circulate inside the car. 2. Drivers can turn off the A/C switch during acceleration or rapid acceleration because the air conditioning compressor is powered by the engine and consumes some of the engine's power. Turning off the A/C switch can prevent insufficient engine power.
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