selecting refrigerant

[Masdede]

we know that so many kind refrigerant that we can use to the refrigeration and ac system, so what things that we have to consider in selecting the suitable refrigerant ?

[Brian_UK]

Temperature.

[Slatts]

Long term availability of the refrigerant, size of the system...

[lowcool]

refrigerant 507 can do anything.best gas on the planet ammonia excluded of course fellas.