The Air-Conditioning, Heating, & Refrigeration Institute (AHRI) has announced the publication of a new edition of AHRI Standard 700-2019, Specifications for Refrigerants, which is available for free download on the AHRI website. The 2019 Edition supersedes AHRI Standard 700-2017 with Addendum 1. The updated standard includes new refrigerants and adds ISO Standard 817 to the scope of the standard. New refrigerant specifications include R-1224yd(Z), R-1336mzz(E), R-407I, R-460C, R-463A, R-464A, and R-465A.