If you want to know what GWP a refrigerant has, you have to check the refrigerant GWP chart. We have prepared a list of 61 refrigerants and their corresponding GWP values, all summarized in a neat chart you can find further on.
Let’s start with a few pieces of information about GWP and refrigerants:
- GWP stands for Global Warming Potential. It is a metric that denotes how harmful greenhouse gas a refrigerant is.
- Carbon dioxide (CO2) is the benchmark greenhouse gas with a designated GWP of 1.
- Most common refrigerants like R410A, R22, and R134A have a GWP of about 2,000. That means they are about 2,000 worse greenhouse gas than carbon dioxide.
- Methane GWP is within the 27 to 30 GWP range. This is one of the most talked about GWPs due to methane from cows and global warming concerns. When used as a refrigerant gas, we denote methane as R50.
- GWP itself seems from the 1997 Kyoto Protocol about global climate change.
GWP for refrigerants ranges from 1 to over 10,000 GWP. According to the Swedish KTH Royal Institute of Technology, all refrigerants with below 150 GWP are considered to be low GWP refrigerants. You can read more about what GWP is here.
Here is the full list of 61 refrigerants and corresponding GWP values in a chart (the most common freons are highlighted with yellow color):
List Of Refrigerants And GWP Values
|R50 (Methane)||27 – 30|
|R744 (Carbon Dioxide)||1|
|R1234yf/ R32 Mixtures||15-37|
|R513A/ R134a Mixtures||300-700|
|R513A/ R1234yf Mixtures||100-300|
|R32/ R-125/ R1234yf Mixtures||675-930|
|R32/ R1234yf Mixtures||220-700|
|R32/ R1234ze(E) Mixtures||500-750|
|R32/ R1234ze(Z) Mixtures||600-750|
|R1234yf/ R1234ze(E) Mixtures||4-7|
|R1234yf/ R1234ze(Z) Mixtures||6-9|
As you can see, the GWP values vary quite a lot. For example:
- R22 has a 1,810 GWP. That means that, pound-per-pound, R22 refrigerant gas is 1,810 times worse greenhouse effect than carbon dioxide.
- R32 has a 675 GWP. This is one of the few commonly used refrigerants in HVAC with below 1,000 GWP.
- R50 or methane gas a 27 – 30 GWP. Releasing 1 pound of methane into the atmosphere has the same greenhouse effect as 27 to 30 pounds of carbon dioxide.
- R134A has a 1,430 GWP.
- R404A has a 3,920 GWP. This is one of the highest GWP values for a commonly used freon.
- R407C has a 1,774 GWP.
- R410A has a 2,088 GWP.
- R422D has a 1,725 GWP.
- R427A has a 2,040 GWP.
- R507A has a 3,985 GWP
- R1234yf has a 4 GWP. This is one of the most commonly used low GWP refrigerants.
The refrigerant with the highest GWP is R23 with 12,400 GWP. It is very rarely used nowadays.
With this refrigerant GWP chart, you can just read the GWP for most refrigerants off the chart. If you are using a refrigerant that is not in the chart, just give us a comment below, specify the refrigerant, and we will add it with the GWP value on the chart. Thank you.