What is the primary difference between R-22 and R-410A refrigerants?

R-22 has a higher ozone depletion potential due to its composition. It is a hydrochlorofluorocarbon (HCFC), which means it contains chlorine that can contribute to the degradation of the ozone layer when released into the atmosphere. This characteristic has led to a phasedown of R-22 under various environmental regulations, such as the Montreal Protocol, which aims to protect the ozone layer by reducing the use of substances that deplete it.

In contrast, R-410A is a hydrofluorocarbon (HFC) refrigerant that does not contain chlorine, making it more environmentally friendly in terms of ozone depletion potential. This transition from R-22 to R-410A reflects a broader movement in the refrigerant industry to adopt options that are less harmful to the environment. The other statements do not accurately reflect the characteristics and differences between these two refrigerants.