Natural refrigerants including ammonia, carbon dioxide, hydrogen, air and water. The first three kinds of natural refrigerants can effect comparing fluorocarbon refrigerants. They have very low GWP value, purchase and use cost is very low. Australia refrigeration association (ARA) believe that natural refrigerant technology (NRBT) will become the dominant industry development. First of all, it is very important to the economy of Australia. At present, the hvac installations in Australia 45 million, procurement and operation cost more than $26 billion a year. The equipment power consumption accounted for 22% of total electricity in Australia each year, equivalent to $14 billion. Energy prices continued to rise and will continue to be on the rise. This makes the energy efficiency of heating, ventilation and air-condition trade important issues. Hvac industry of greenhouse gas (GHG) emissions accounted for at least 12%. In fact, if all the related factors are taken into consideration, the data will be closer to 15%. GHG emissions will become the primary concern of the next few years. 

At present, hvac industry mainly adopts the technology of the fluorocarbon refrigerants (FRBT), especially the large capacity products, such as commercial, household refrigeration and air conditioning, and refrigeration/refrigerated transportation. Because of fluorocarbon refrigerants have higher GWP value, in the range between 1300 and 23000, and high leakage/emission rates (4% 5%), therefore FRBT is the main source of GHG emissions. Due to the rising raw material prices, price of fluorocarbon refrigerants is part of the rose. Even if cancel the synthesis of greenhouse gases (SGG) tax, fluorocarbon price is still higher than natural refrigerants. At present, FRBTs and NRBTs the commercial conflict is increasing. Industry should be clearly aware of the problem, in order to properly solve direct way, rather than continue to confuse and mislead, that will only create more misunderstanding. At the same time, we also should take into account the economic, environmental and safety problems, through the application of equilibrium solutions to NRBTs and FRBTs conversion between, and taking into full consideration the needs of the end user. As refrigerants are being phased out. 

For example, the world's leading food retailers and suppliers has promised to adopt NRBT. Refrigeration and air conditioning equipment manufacturers also use NRBT technology is producing the full range of products to meet the full range of refrigeration and air conditioning industry application.

While the new low GWP value refrigerant (HFO) has not been used in Australia, this is mainly due to their performance, safety, and the price has not been accepted by the market, there are still some controversy.

Everyone thinks FRBTs safer than NRBTs. This is mainly FRBT advocates. Actually not accurate. When used properly, can't all refrigerants are dangerous. Under certain conditions, fluorocarbon and natural refrigerants have toxicity and flammability. For the new fluorocarbon refrigerants such as R32 and HFOs is also the same. When combined with a reliable maintenance system, engineering solutions to decrease the risk for all the safety of the refrigerant. Hvac system safety accident frequency is very low, and can be further reduced.

Despite a growing body of evidence suggests that the cost of climate change caused by the growth and an increase in mortality, fluorocarbon refrigerants's impact on the environment does not include within the scope of the refrigerant safety risk assessment. Therefore, FRBT safer than NRBT this premise is not there. NRBTs is "safe" for climate change, at least in the local is very important.