R32 has 3 advantages：
1.the R32 has a lower GWP (Global Warming Potential) value which is more friendly to the environment.
2.R32 require 20% lower charging volume compared with R410A.
3.R32 provide 5% higher energy efficiency than R410a.
Disadvantages:Different from R22 and R410A, the R32 is slightly flammable.
But combustion will not occur unless three critical conditions are met, refrigerant concentration, constant oxygen, and an ignition source.
In real practice, it's hard to meet all the combustion conditions. But it still needs to have better safety control during the installation process.
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