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Should You Turn on the A/C When Using the Car Heater?

1 Answers

OChristopher

07/28/25 4:01pm

When using the car heater, there is no need to turn on the A/C switch. This is because the heater utilizes the engine's heat, which is circulated into the cabin through the air conditioning system's blower, 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 air conditioning compressor's switch. In summer, drivers need to turn on the A/C button along with the cold air setting to activate the air conditioning's cooling function, allowing cold air to circulate inside the car. 2. Drivers can turn off the A/C switch during acceleration or rapid acceleration, as the air conditioning compressor is powered by the engine and consumes some of its power. Turning off the A/C switch can prevent insufficient engine power.

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