What is the method for adding refrigerant to a car air conditioner?

1 Answers
CatherineDella
07/29/25 7:35pm
There are two methods for adding refrigerant to a car air conditioner: the high-pressure side charging method and the low-pressure side charging method. The following are the relevant details: Situations where a car air conditioner requires refrigerant addition include: 1. Temperature cannot drop below 16°C: If the air outlet temperature of the indoor air conditioner cannot reach below 16°C, refrigerant needs to be added. 2. Temperature can drop below 16°C: If the air outlet temperature can reach below 16°C, but it takes a long time, such as more than 5-6 minutes, refrigerant also needs to be added. Precautions: 1. High-pressure side charging: Suitable for charging after leak detection and vacuuming. Note that this method requires the compressor to be turned off, the engine to be stopped, and the refrigerant tank to be inverted. 2. Low-pressure side charging: This method involves adding gas, characterized by slow charging speed, and is usually suitable for supplementing refrigerant.
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