How to Determine if a Car's Air Conditioning is Low on Refrigerant?

[DeMason]

Methods to determine if a car's air conditioning is low on refrigerant: When the air conditioning is running normally and continuously, if there are continuous bubbles in the sight glass, it indicates a refrigerant shortage. Alternatively, you can open the car's hood and check if there are oil stains at the air conditioning system's joints; if present, this also signifies a refrigerant shortage. The commonly referred to "fluorine" is Freon, which is a gas or liquid at room temperature, transparent, with low dielectric constant, high critical temperature, and easy to liquefy, often used as an air conditioning refrigerant. Air conditioning is a comfort feature in cars, capable of cooling or heating, allowing drivers to adjust the interior temperature to a comfortable level while driving. During summer driving, turning on the air conditioning causes air to be drawn into the car's compressor for cooling, while in winter, heat from the engine can be used for warming. Additionally, the car's air conditioning system includes an air filter, which serves to filter the incoming air.