Which refrigerant is noted for having the lowest global warming potential (GWP)?

R32 is noted for having the lowest global warming potential (GWP) among the refrigerants listed. GWP is a measure of how much heat a greenhouse gas traps in the atmosphere over a specific time period, typically 100 years, compared to carbon dioxide. R32 has a GWP of around 675, which is significantly lower than R410A, R22, and R134A, making it a more environmentally friendly choice when considering its impact on global warming.

In addition to its lower GWP, R32 is also characterized by its high energy efficiency, which can help reduce overall greenhouse gas emissions through improved energy usage. This combination of lower environmental impact and efficient performance makes R32 an increasingly popular choice in the industry, particularly as regulations tighten around high-GWP refrigerants.