I don’t know what actually comes with a Heatcraft evap coil these days but as of 3-4 years ago they provided one for R22 and another one that covered everything else. It follows then, for any replacement refrigerants you would apply same nozzle as would be used for the original refrigerant…ie, R407C would use the R22 nozzle, R134A would use the one for R12, etc. >>>To read this the rest of this article, you must be registered and logged in. Please return to the Home page to log in.<<<