No, R12a refrigerant is safe to use. Even though thefrigerant is not safe, Japan R12a refrigerant is worth-while, because of its non-flammable properties.
No, the R10a refrigerant is safe. It is non-toxic, non-flammable, and ozone-friendly. The aluminum refrigerant is non-toxic, non-flammable, and ozone-friendly. No, the use of R10a refrigerant is safe because it is low-toxic, non-flammable, and environmentally friendly.