What is going on with all the concern around R-22?
During the 1980s, scientists observed that the stratospheric ozone layer was getting thinner. Since that time governments around the world have made efforts to reduce greenhouse gases and ozone depleting chemicals. R-22 refrigerant is one of the chemicals being phased out by the EPA and for the last several years air conditioner manufacturers have complied by replacing the R-22 in newer models with R410-A. R-410A is being used as a refrigerant in new air conditioners and cooling systems because it is a blend of hydrofluorocarbons (HFCs) that does not contribute to depletion of the ozone layer.
If you have an older air conditioner you can have R-410A replace the R22, due to the phase out R22 is not being manufactured anymore so eventually you will use R-410A. If you are looking to purchase an air conditioning system from a heating & cooling company be sure to ask which type of refrigerant is being used as replacing R-22 may become an added expense and if you care about the environment and want to Go Green you can stay away from those models.