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R-404A is an almost azeotropic mixture of HFC refrigerants, with zero ozone layer depletion, used in new refrigeration equipment at mid-range and low temperatures. It is also an indirect replacement (retrofit), in equipment that previously operated with R-502 and its HCFC replacements such as R-408A, DI-44, and HP80. 

It is mainly used in new installations with mid-range and low refrigeration temperatures. The theoretical cooling capacity is 5% lower than R-502 at evaporation temperatures of -40ºC. The coefficient of performance (COP) is between 5 and 8% lower than R-502. As superheating increases, R-404A’s COP might become higher than that of R-502. In the case of R-502 retrofits and its HCFC replacements (R-408A, DI-44), 95% of the original mineral oil or alkylbenzene must be replaced by a polyolester oil, the dryer filter and expansion valve changed, rubber O-rings replaced with plastic ones and, occasionally, the size of the condenser must be increased. When it is used as a retrofit for R-22, the safety valves also need to be changed along with any other elements calibrated to R-22 pressures.


· Water coolers.

· Cold stores.

· Refrigerated display cabinets.

· Ice cream/ice machines.

· Ice rinks.

· Cold chambers.

· Refrigerated transport.

· Cold drinks dispenser.

· Freezing tunnels.

· Fishing boats. 


  • Medium temperatures
  • Low Temperatures
  • new Installations
  • Retrofit


· Dos not damage the ozone layer, ODP = 0.

· Only compatible with POE synthetic oils.

· Equipment can be refilled in the case of leakage.

· Lower discharge temperatures than R-22, which extends the life of the compressor.

· Slightly lower cooling capacity and energy efficiency than R-502.

· Higher cooling capacity and similar energy efficiency to that of R-22.

· Global warming potential (GWP) = 3922

· Boiling point at 1.013 bar (ºC): -46.45
· Temperature slip or glide (ºC): 0.7

· Saturated vapour density at 25ºC (kg/m3): 63.28

· UN nº: 3337

· Safety classification: A1. Low toxicity and nonflammable.

· Always load in its liquid phase.    


  • 0,79 Kg
  • 1,8 Kg
  • 5 Kg
  • 10 Kg
  • 10,9 Kg
  • 12 Kg
  • 20 Kg
  • 50 Kg
  • 740 Kg
  • 20000 Kg


  • Synthetic POE oils

With the aim of working with just one refrigerant, R404A has been used to work in equipment with low and mid-range evaporation temperatures and also in air conditioning. On the other hand the cooling capacities of R-404A and R-507 are much higher in mid-range refrigeration temperatures compared to R-134a. Nevertheless, these advantages are counterbalanced by a significant decrease in the coefficient of performance (COP) of R-404A and R-507 compared to R-134a. The greater the evaporation temperature, the lower the COP. The vapour pressure is slightly lower than that of R-507. The cooling capacity and the COP are both slightly lower compared to R-507 and very much lower compared to R-442A (RS50).