scope:

This document provides the results of a comprehensive assessment of the state of the art on the use of flammable refrigerants, in particular from class A3. Refrigerants from class B (toxic) are excluded from this scope. The Technical Report includes the following elements: • A segmentation of the refrigeration, air-conditioning and heat pump market, making use of existing studies and research, including an assessment of safety-related barriers to the uptake of flammable refrigerants in particular from class A3 across all relevant applications; • An assessment of the way risk assessments are used in existing standards for refrigeration, air- conditioning and heat pump equipment and in other standards and a review of available risk assessment research to be taken into account including identification of potential needs for additional research; • Analysis of: o the relationship between risk and increased charge; o the acceptability of increased risk compared to the risk presented by other technologies; o the options for additional mitigation methods if the risk increase is unacceptable.