What is the appropriate pressure for car air conditioning refrigerant charging?

1 Answers
StJames
07/29/25 5:39pm
Car air conditioning refrigerant charging pressure: High pressure 1.3-1.7MPA; Low pressure 0.1-0.25MPA. The following are some introductions about air conditioning refrigerant charging pressure: 1. If the pressure is higher or lower than the above range, it indicates abnormal expansion valve adjustment. Compressor problems are not included in this category. 2. When measuring the pressure of the air conditioning system, the engine should be idling, and the measurement should be taken at an ambient temperature of 35℃. 3. When the engine throttle is increased, the measured low pressure should decrease with the engine speed. The faster the speed, the more the pressure drops, which indicates good compressor performance. Otherwise, it indicates a compressor failure.
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