What is the pressure for adding refrigerant to a car?

[DiJade]

Generally, the pressure for adding refrigerant to a car's air conditioning system is 150-250 kPa for the low pressure side and 1300-1500 kPa for the high pressure side. Methods for adding car refrigerant: It can be added from either the high-pressure side or the low-pressure side. These two methods differ significantly due to the state of the refrigerant being added. The high-pressure side method involves adding liquid refrigerant, which is suitable for the initial filling after leak detection and vacuuming. Note that this method requires the engine to be off, and the refrigerant can must be inverted. The low-pressure side method involves adding gaseous refrigerant, which is slower and typically used for topping up refrigerant. Precautions when adding car refrigerant: After completing the refrigerant addition, close the low-pressure manual valve on the manifold pressure gauge, shut off the injection valve on the refrigerant can, stop the engine, and quickly remove the manifold pressure gauge from the compressor to prevent excessive refrigerant leakage.