How much fuel is consumed by idling with the air conditioning on for one hour?

1 Answers
ChaseLynn
07/29/25 4:20pm
Idling with the air conditioning on for one hour consumes 1-2L more fuel compared to driving normally without air conditioning. In summer, when the air conditioning is on, the compressor needs to work to cool the air. The compressor cannot operate on its own; it relies on the engine to drive it, which consumes some of the engine's power. This is why using air conditioning for cooling affects fuel consumption. Here are some ways to use the air conditioning more efficiently: 1. If the car is parked outdoors in summer: Before getting in, it's best to open the windows first and not immediately turn on the air conditioning. Set the fan to maximum speed to accelerate ventilation and wait for the hot air inside the car to dissipate before turning on the cooling. 2. Adjust the air vents: Pointing the vents upward improves cooling efficiency through physical effects. 3. Avoid setting the air conditioning temperature to the lowest for extended periods: A large temperature difference between the inside and outside of the car can increase fuel consumption and also affect the health of the passengers.
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