R290 refrigerant gas
R290 is up to 475 times more environmentally friendly than traditional gases** whilst it is very effective. (**Compared to the impact on Global Warming of R134A - F-gas Reg. 517/2014. R290 has a GWP (Global Warming Potential) index ofkgC02eq., R410A GWP is 2088 kgC02eq., R134A is 1430 kgC02eq.)