R404A is a blend of HFC refrigerants commonly used for medium and low temperature refrigeration applications. Its composition comprises: HFC-125 (44%), HFC-143a (52%), HFC-134a (4%). It is non-toxic and non-flammable meeting the highest A1/A1 classification.
HFC's are a type of synthetic greenhouse gas (SGG) having global warming potential. To reduce emissions of these gases globally a HFC phase-down under the Montreal Protocol was agreed in Kigali, Rwanda, in October 2016. Commencing in 2018, the Australian phase down will conclude in 2036 reaching an 85% reduction target.
Low GWP alternatives like R448A (Solstice N40), R449A (Opteon XP40) and R449B (ARM 32b) are HFC/HFO blends that can be used to retrofit current R404A systems. Longer term the use of HFO A2L refrigerants such as R455A (Solstice L40) are likely to replace R404A in new low temperature equipment (not for retrofit).
ODP = 0.055
GWP = 3922 (AR4)
Oil = POE
Note: GWP calculated on the Australian Government calculator for the Import Levy and Equivalent Price for SGGs and SGG/HCFC blends (Version 1.1, 24 August 2012)