Refrigeration and air-conditioning equipment, including systems in vehicles, contain refrigerants. With increased costs and environmental damage associated with the use of synthetic chemical refrigerants, such as chlorofluorocarbons (CFCs) and hydro-chlorofluorocarbons (HCFCs), there has been an increased use of flammable refrigerants that are marketed as natural refrigerants or ‘green’ alternatives. These refrigerants mainly contain hydrocarbons (e.g. propane or butane – components of LP gas or other mixtures), or hydrofluoro-olefins (HFOs).
The use of flammable refrigerants has implications in how the refrigerant is stored, handled and used.
Equipment must be fit-for-purpose and those who supply services, such as installation and maintenance, must have the appropriate training and licences to carry out the work, (e.g. Motor Vehicles Repairers Act 2003, Australian Consumer Law).
The Department of Energy, Mines, Industry Regulation and Safety has become concerned following incidents involving flammable refrigerants. These have resulted in injury and damage to property within Western Australia and fatalities in Victoria and New Zealand.