Refrigerant CO₂e Calculator
Calculate direct refrigerant emissions in CO₂-equivalent from refrigerant mass, system charge or leak rate using the current Refrigerants.net GWP reference basis.
10 kg R410A released
Using GWP 2,088 on the site-wide reference basis:
Calculate direct refrigerant emissions
Use a known released mass, or estimate released refrigerant from system charge and leak/release rate. All calculations normalize refrigerant mass to kilograms internally.
10 kg R410A → 20.88 t CO₂e
Quick refrigerant CO₂e examples
For a 1 kg refrigerant release, the numerical CO₂e value in kilograms equals the refrigerant GWP on the selected reference basis.
| Refrigerant | GWP | CO₂e from 1 kg Release | Metric Tons CO₂e |
|---|---|---|---|
| R404A | 3,922 | 3,922 kg CO₂e | 3.922 t |
| R410A | 2,088 | 2,088 kg CO₂e | 2.088 t |
| R134a | 1,430 | 1,430 kg CO₂e | 1.430 t |
| R32 | 675 | 675 kg CO₂e | 0.675 t |
| R513A | 630 | 630 kg CO₂e | 0.630 t |
| R454B | 465 | 465 kg CO₂e | 0.465 t |
| R454C | 146 | 146 kg CO₂e | 0.146 t |
| R290 | 3.3 | 3.3 kg CO₂e | 0.0033 t |
| R744 | 1 | 1 kg CO₂e | 0.001 t |
| R1234yf | 1 | 1 kg CO₂e | 0.001 t |
GWP tells you the factor; CO₂e applies it to mass
CO₂-equivalent lets different greenhouse gases be expressed on a common CO₂ mass basis for direct climate-impact comparison.
What is refrigerant CO₂e?
CO₂-equivalent converts the direct warming impact of a refrigerant mass into the equivalent mass of CO₂ using the selected GWP value.
Example: 1 kg R32 × GWP 675 = 675 kg CO₂e.
Compare Refrigerant GWP Values →Why can published GWP values differ?
Regulatory programs can reference different IPCC or WMO scientific assessment reports. Updates to atmospheric lifetime, radiative efficiency and rounding can change published GWP values.
Refrigerants.net primarily uses the EPA Technology Transitions GWP reference table where available.
Open Refrigerant Comparison Tool →Refrigerant CO₂e calculator questions
Short answers for emissions estimates, leak scenarios and refrigerant transition planning.
What is refrigerant CO₂e?
Refrigerant CO₂e is refrigerant mass multiplied by its GWP. It expresses direct refrigerant warming impact as an equivalent mass of CO₂.
How do I calculate refrigerant CO₂e?
Convert the refrigerant quantity to kilograms and multiply by GWP. This calculator performs the mass conversion automatically for kg or lb inputs.
How much CO₂e is 1 kg of R410A?
1 kg of R410A equals 2,088 kg CO₂e on the EPA Technology Transitions reference basis used by this site.
How much CO₂e is 1 kg of R32?
1 kg of R32 equals 675 kg CO₂e on the reference basis used by this site.
How much CO₂e is 1 kg of R454B?
1 kg of R454B equals 465 kg CO₂e on the reference basis used by this site.
How do I calculate emissions from refrigerant leakage?
Multiply system charge by the leak rate to estimate released mass, then multiply that released mass by GWP. The leak mode does both steps automatically.
What is the difference between GWP and CO₂e?
GWP is a relative warming factor; CO₂e applies that factor to a specific greenhouse-gas mass.
Does lower CO₂e mean a refrigerant is a direct replacement?
No. Equal-mass CO₂e says nothing by itself about pressure, safety class, lubricant, charge, equipment approval or retrofit compatibility.
Should refrigerant charge be entered in kg or lb?
Either. Choose the matching input unit; the calculator converts lb to kg internally using 0.45359237 kg per lb.
Does this calculator include electricity-related HVAC emissions?
No. This calculator estimates direct refrigerant emissions only. Energy use, electricity carbon intensity and full lifecycle emissions are outside its scope.
Need help evaluating refrigerant emissions or a low-GWP transition?
Use the GWP Calculator for climate-factor comparison, the Refrigerant Comparison Tool for broader technical differences, or discuss application and project requirements.