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Refrigerants - Environmental Properties

Refrigerants - Ozone Depletion (ODP) and Global Warming Potential (GWP)

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Common refrigerants and their Ozone Depletion Potential (ODP) and Global Warming Potential (GWP) are indicated below.

  • Ozone Depletion Potential (ODP) of a chemical compound is the relative amount of degradation  it can cause to the ozone layer
  • Global Warming Potential (GWP) is a measure of how much a given mass of a gas contributes to global warming. GWP is a relative scale which compares the amount of heat trapped by greenhouse gas to the amount of heat trapped in the same mass of Carbon Dioxide. The GWP of Carbon Dioxide is by definition 1. Be aware that GWPs are highly controversial.
RefrigerantOzone Depletion Potential
(ODP)
Global Warming Potential
(GWP)
R-11 Trichlorofluoromethane 1.0 4000
R-12 Dichlorodifluoromethane 1.0 2400
R-13 B1 Bromotrifluoromethane 10  
R-22 Chlorodifluoromethane 0.05 1700
R-32 Difluoromethane 0 650
R-113 Trichlorotrifluoroethane 0.8 4800
R-114 Dichlorotetrafluoroethane 1.0 3.9
R-123 Dichlorotrifluoroethane 0.02 0.02
R-124 Chlorotetrafluoroethane 0.02 620
R-125 Pentafluoroethane 0 3400
R-134a Tetrafluoroethane 0 1300
R-143a Trifluoroethane 0 4300
R-152a Difluoroethane 0 120
R-245a Pentafluoropropane 0  
R-401A (53% R-22, 34% R-124, 13% R-152a) 0.037 1100
R-401B (61% R-22, 28% R-124, 11% R-152a) 0.04 1200
R-402A (38% R-22, 60% R-125, 2% R-290) 0.02 2600
R-404A (44% R-125, 52% R-143a,  R-134a) 0 3300
R-407A (20% R-32, 40% R-125, 40% R-134a) 0 2000
R-407C (23% R-32, 25% R-125, 52% R-134a) 0 1600
R-502 (48.8% R-22, 51.2% R-115) 0.283 4.1
R-507 (45% R-125, 55% R-143) 0 3300
R-717 Ammonia - NH3 0 0
R-718 Water - H20 0  
R-729 Air 0  
R-744 Carbon Dioxide - CO2   1*

*  CO2 is the GWP reference

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