Can the car run the air conditioner without turning off the engine?
2 Answers
It is possible to run the air conditioner without turning off the engine for a short period of time. However, doing so for an extended period can lead to increased carbon deposits in the car's engine. The car air conditioner is an important comfort feature that can provide both cooling and heating, making it essential during both winter and summer seasons. When the car air conditioner is in cooling mode, the compressor clutch engages, and the engine drives the compressor to operate. The compressor continuously compresses the refrigerant and delivers it to the evaporator. Inside the evaporator, the refrigerant expands and absorbs heat, thereby cooling the evaporator. The cooled evaporator then cools the air blown by the blower, allowing the car air conditioner to emit cold air from the vents.
When I drive, I often turn on the air conditioning while the engine is running because the compressor needs the engine belt to operate. After starting the car, I press the AC button and increase the fan speed, which quickly cools down the interior. Especially in hot summers, this is more comfortable than waiting for the car to move before turning it on. However, it's important to note that idling with the AC on increases fuel consumption by 0.5 to 1 liter per hour, so I only use it during short stops to avoid prolonged idling. Additionally, the AC works efficiently when the engine is running, but it only blows air without cooling after the engine is turned off. Ensure good ventilation by using the external circulation mode to prevent exhaust fumes from accumulating. If the car has automatic air conditioning, pressing the AUTO button adjusts the temperature automatically, making it more convenient. Regularly check the cabin air filter to maintain system health.
