The “Past and Present” of Refrigerants


In the blink of an eye, the beginning of summer has passed, will the scorching sun still be far away? When it comes to escaping the summer heat, the most inseparable way to cool down is…? Of course, eat watermelon and enjoy the air conditioner!

So how much do you know about modern refrigerants? When was the world’s first truly modern refrigerant born? Let us walk into the “past and present” of refrigerants today.

In 1834, ether was the first refrigerant to be used;

In 1866, carbon dioxide was used as a refrigerant;

In 1870, ammonia was used as a refrigerant;

In 1874, sulfur dioxide was used as a refrigerant;

The above refrigerants are flammable, highly corrosive, unstable, toxic, high pressure, etc., and have high safety hazards. The world’s first truly safe modern refrigerant was born in 1930.

In 1930, difluorodichloromethane (CFC-12, R-12) refrigerants were produced commercially.

With the continuous innovation of technology, in the 1950s, Freon introduced the well-known HCFCs (R-22) refrigerant. Compared to the first-generation product, R-22 has a lower ozone depletion potential (ODP).

In the 1990s, HFCs (R-134a) refrigerants were born, which further reduced the ozone depletion potential to zero.

In the years since Fonsum refrigerants entered the market, we have continued to innovate technology to provide the industry with refrigeration solutions that meet global regulatory requirements, provide high quality, outstanding performance, and are safe and reliable. If you are interested in our products, please leave messages online or send an email to


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