What is the difference between turning on AC and not turning on AC in a car?
2 Answers
Only by turning on the AC switch on the car's air conditioning control panel will the car's air conditioning start to cool. If this AC switch is not turned on, the car's air conditioning will not cool, and it will blow out natural air. The following is a related introduction to car air conditioning: 1. Introduction to car air conditioning: The car air conditioning device (air-conditioning-device), referred to as car air conditioning. It is used to adjust and control the temperature, humidity, air cleanliness, and air flow inside the car compartment to the optimal state, providing passengers with a comfortable riding environment and reducing travel fatigue; it creates good working conditions for the driver and plays an important role in ensuring safe driving. 2. Car air conditioning devices: Generally include refrigeration devices, heating devices, and ventilation devices. This combined device makes full use of the limited space inside the car, has a simple structure, and is easy to operate, making it a popular modern car air conditioning system internationally.
As a seasoned driver with over a decade of experience, I know there's a big difference between turning the car AC on and off. When the AC is on, the compressor kicks in to cool, cycling refrigerant to absorb heat like a fridge, blowing out icy cold air that also dehumidifies to prevent fogging—perfect for quick cooling and reducing stuffiness during summer rains. However, running the AC increases engine load and fuel consumption, especially in traffic where it can hike fuel use by around 20%. Compressor wear also raises the risk of costly repairs. Without AC, just the fan blows natural or warm air without cooling, ideal for breezy spring/autumn days to save fuel and eco-friendly, but unbearable in heatwaves when it blows hot air. My advice: use AC briefly for summer relief, otherwise conserve resources and car health. Regular checks (like refrigerant levels) extend AC life and prevent sudden breakdowns. Drive more to feel the difference—safety and comfort come first.
