How to determine whether to add

There is nothing more treasured in the world than the little quilted jacket in winter and Freon in summer. Freon is the refrigerant, and the cool breeze in the air conditioner is produced entirely by its effect. In the hot summer, the air conditioner is not working well, and the car is like a steamer. Therefore, before the temperature rises slowly, quickly get the knowledge of these refrigerants—　

How often do you add refrigerant for car air conditioning?

Generally, it is added once a year, but there are At that time, the cooling effect of air-conditioning is not good, and refrigerant needs to be added.

How to judge whether it is necessary to add refrigerant: First try: After the air conditioner is turned on for a period of time, it is normal to feel the cool breeze; Second listen: The compressor is like a refrigerator at home. Work for a while and stop for a while to be normal; Third test: use a thermometer to measure the air inlet and outlet, the temperature difference> 8 ℃ is normal;

What does 134a on the refrigerant mean? Automobile refrigerants are divided into environmentally-friendly (134a) and non-environmental-friendly (R12). R12 has a long history, but it has been discontinued because it contains molecules that destroy the ozone layer. 134a is an environmentally friendly refrigerant recommended by the United Nations. Automobile air-conditioning systems produced after 2002 are specially designed for 134a. If other non-134a refrigerants are added, they can be cooled in a short time, but long-term use will cause reversible damage to the entire automobile air-conditioning system.

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