ComStar Introduces R-410a Drop-In Replacement Refrigerant

RS-53 (R-470A) is a new patented HFO blend with an ultra-low Global Warming Potential of 909 (AR5) and is zero ozone depleting.

source https://www.achrnews.com/articles/142521-comstar-introduces-r-410a-drop-in-replacement-refrigerant