Ghg Emission Factors: refrigerant
GHG emission factors for carbon footprint and greenhouse gas inventory calculations — 64 records across 6 source categories. Stationary combustion (natural gas, diesel, propane, coal, fuel oils, biomass) in kg CO2e per mmBtu or per physical unit. Mobile combustion (gasoline, diesel, jet fuel, marine) in kg CO2e per gallon. Electricity by 26 EPA eGRID2022 US subregions + national average in kg CO2e per MWh. Refrigerant GWP (R-134a through SF6) in kg CO2e per kg refrigerant. Process emissions (cement, steel, aluminum, lime). Waste (landfill, composting, recycling credits). Sources: EPA GHG Emission Factors Hub 2024, EPA eGRID2022, IPCC AR5 WG1 Annex II, 40 CFR Part 98, GHG Protocol Corporate Standard, EPA WARM v15.
| emission source type | record id | ch4 g per unit (g CH4/unit) | co2 kg per unit (kg CO2/unit) | co2e kg per unit (kg CO2e/unit) | fuel or source | gwp basis | n2o g per unit (g N2O/unit) | notes | unit notes | unit of activity |
|---|---|---|---|---|---|---|---|---|---|---|
| refrigerant | R1234yf | 0 | 4 | 4 | HFO-1234yf (2-3-3-3-tetrafluoroprop-1-ene) | AR5 GWP100 | 0 | Low-GWP automotive AC replacement for R-134a; MILDLY flammable A2L; GWP AR5=4 AR6=<5 | kg CO2e per kg refrigerant | kg refrigerant |
| refrigerant | R1234ze | 0 | 7 | 7 | HFO-1234ze(E) | AR5 GWP100 | 0 | Centrifugal chiller refrigerant; low GWP replacement for R-134a in large chillers; A2L class | kg CO2e per kg refrigerant | kg refrigerant |
| refrigerant | R134a | 0 | 1,430 | 1,430 | HFC-134a (R-134a / 1-1-1-2-tetrafluoroethane) | AR5 GWP100 | 0 | Air conditioning refrigerant; automotive AC; medium temperature commercial refrigeration; GWP AR4=1430 AR5=1430 AR6=1526 | kg CO2e per kg refrigerant leaked / charged | kg refrigerant |
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