1 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.
This document 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 is 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:
• the relationship between risk and increased charge;
• the acceptability of increased risk compared to the risk presented by other technologies;