R507 is an azeotropic blend of HFC refrigerants R125 and R143a. It has similar properties and characteristics to R404A and can be used in similar applications at medium and low temperatures.
It has a GWP greater than 2500 and the use of virgin product will be banned from 01/01/2020 in the EU.
R448A, R449A and R442A are potential replacements in direct expansion systems. Please contact Climalife for specific recommendations for your applications.