The RDL program arises from the need for a responsible and safe transition to next generation refrigerants. The RDL is a refrigerant management qualification program jointly developed by AHRI and UNEP OzonAction and supported by key international industry associations. The RDL sets minimum competencies and skills for the HVAC&R (Heating, Ventilating, Air Conditioning and refrigeration) servicing network (individuals and companies) and creates an internationally recognised program through industry and governments.