R32, also known as difluoromethane, is a good refrigerant gas for several reasons. First, it has a low global warming potential (GWP) of 675, which is much lower than other commonly used refrigerants like R410A or R134a. This means that R32 has a lower impact on the environment and contributes less to climate change.

Second, R32 has excellent thermodynamic properties, which means it is an efficient refrigerant that can provide high cooling capacity with less energy consumption. Its high volumetric cooling capacity and low discharge temperature also make it ideal for use in small, compact air conditioning systems.

Finally, R32 is a safe refrigerant to use. It is non-toxic, non-flammable, and has a low risk of explosion. It also has a lower compressor discharge temperature than other refrigerants, which can help prolong the life of the compressor. Overall, R32 is a great choice for refrigeration and air conditioning systems due to its low environmental impact, efficient cooling properties, and safety.