Breaking NEWS on the refrigerant transition front!

With the phase-down of R410A quickly approaching, many manufacturers are still deciding which replacement refrigerant to use.

Some manufacturers are still evaluating between R32 and R454B, but a few have chosen sides.

We reveal some of these decisions in this excerpt from Podcast Episode 26: The R410A Phase-Out Schedule | The Properties of R32 and R454B.

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Refrigerants play a critical role in the functioning of air conditioning and refrigeration systems. They are responsible for transferring heat from the indoor or outdoor space to the refrigeration unit, allowing for temperature control. However, the impact of refrigerants on the environment is a growing concern. Many commonly used refrigerants have high global warming potential (GWP), contributing to climate change. In recent years, there has been a push to develop and adopt refrigerants with lower GWP, leading to the emergence of new refrigerants with unique properties.

Two such refrigerants are R32 and R454B. R32 is a pure hydrofluorocarbon (HFC) refrigerant, while R454B is a blend of HFC and hydrofluoroolefin (HFO) refrigerants. While these refrigerants offer lower GWP, they have unique properties that distinguish them from each other.

Both have similar performance to R410A. Both have a similar performance to each other. Both are classified as A2L, mildly flammable refrigerants. Both have a lower GWP than R410A.

R32 is a single-component refrigerant. It is a mildly flammable A2L refrigerant, meaning it can ignite in the presence of an ignition source but only under certain conditions.

R454B is an azeotropic blend of HFC and HFO refrigerants, 69% R32 and 31% R1234yf. It is a mildly flammable A2L refrigerant with a low GWP of 466. R454B was developed as a potential replacement for high-GWP refrigerants like R410A.

Stay informed and stay ahead of the game!

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