How to Add Car Refrigerant?

1 Answers
SadieMarie
07/29/25 10:38pm
Car air conditioning refrigerant, commonly known as car refrigerant, is mainly divided into two types in vehicles: environmentally friendly 134a and non-environmentally friendly R12. The steps to add car refrigerant are as follows: 1. After vacuuming the system, close the high and low pressure manual valves on the manifold gauge. 2. Connect one end of the middle hose to the refrigerant tank injection valve fitting: open the refrigerant tank valve, then loosen the nut at one end of the manifold gauge hose to allow gas to escape for a few minutes, then tighten the nut. 3. Fully open the high-pressure side manual valve and invert the refrigerant tank. 4. Inject the specified amount of liquid refrigerant from the high-pressure side: close the refrigerant tank injection valve and the high-pressure manual valve on the manifold gauge, then remove the gauge. When adding refrigerant to the system from the high-pressure side, ensure the engine is not running and do not open the low-pressure manual valve on the manifold gauge to prevent hydraulic shock.
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