How to Add Refrigerant to a Car Air Conditioner by Yourself?

1 Answers
SanReagan
07/30/25 12:11am
Connect the refrigerant gauge to the air conditioning system (both high and low-pressure pipes), and perform vacuuming. Select low-pressure vacuuming (turn the switch corresponding to the low-pressure gauge counterclockwise, while the high-pressure gauge switch should be closed). Generally, there's no need to observe the negative pressure value during vacuuming; 3 minutes of vacuuming is sufficient. After the time is up, tighten the low-pressure gauge switch, and then you can connect the refrigerant canister for filling. The high pressure should be around 150, and the low pressure around 30. Below is an introduction to car air conditioners: 1. Introduction: A car air conditioner refers to the air conditioning device installed in a vehicle. 2. Function: It can cool, heat, ventilate, and purify the air inside the cabin, providing a comfortable environment for passengers, reducing driver fatigue, and improving driving safety. The air conditioning system has become one of the indicators to measure whether a car is fully equipped. 3. Device: It generally includes refrigeration, heating, and ventilation devices. This combined system makes full use of the limited space inside the car, featuring a simple structure and easy operation, making it a popular modern car air conditioning system internationally.
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