To support and provide the reduction of the use of hydrofluorocarbons (HFCs) in refrigeration, air conditioning and heat pump equipment, the European Commission had issued the standardization request to have a European standardization deliverable on the use of flammable refrigerants. These new standardization deliverables specifically classified as A3 in refrigeration, air conditioning and heat pump equipment are planned to be issued by November 2020 or February 2021.