What refrigerants are commonly used in air conditioners now?

At present, the commonly used air conditioning refrigerants mainly include the following:

1.R22 Freon: This is the most widely used air conditioning refrigerant at present, but it has been banned because it will destroy the ozone layer. However, it will continue to be used in some old air-conditioning equipment.

2.R4 10A refrigerant: This is an environment-friendly refrigerant, which does not contain chlorofluorocarbons and does no harm to the ozone layer and the environment. It is one of the most popular refrigerants at present. Its performance is better than R22 Freon, but some areas with high temperature and humidity may need to use more advanced refrigerants.

3.R 134A refrigerant: This is a widely used refrigerant, which contains no chlorofluorocarbons and is harmless to the environment. Its performance is worse than R22, but it is cheaper and can replace the old R22 freon refrigerant.

4.R407C refrigerant: This is a mixed refrigerant, which consists of hydrogen fluoride, freon, propane and butane. Its performance and refrigeration effect are similar to R22, but its harm to the environment is lower than R22. It is often used in commercial and industrial air conditioning systems.

Generally speaking, R4 10A is the most widely used and environmentally friendly air conditioning refrigerant at present. In addition, due to the different climate and temperature conditions in different regions, the use of different refrigerants may be different.