Which refrigerant is known for having the lowest Global Warming Potential (GWP)?

R32 is recognized for having the lowest Global Warming Potential (GWP) among the refrigerants listed. GWP is a measure of how much a given mass of a greenhouse gas contributes to global warming over a specified time period, compared to carbon dioxide.

R32 has a GWP of approximately 675, making it significantly lower than that of R134a, R410A, and R22. This lower GWP means that, when used as a refrigerant, R32 has a reduced impact on climate change compared to the other options.

R134a has a GWP of about 1430, which is more than double that of R32. R410A, a blend of two refrigerants, has a GWP of around 2088, making it one of the higher GWP refrigerants commonly used. R22, although previously popular, has a GWP of about 1810, which is also higher than R32.

Overall, the environmentally beneficial properties of R32, along with its efficiency as a refrigerant, make it the preferred choice among these options, particularly in the context of regulatory trends aimed at reducing the impact of refrigeration and air conditioning on global warming.