HVAC professionals can stay up-to-date with changing refrigerant regulations and standards by attending industry conferences, workshops, and training sessions, as well as participating in online forums and webinars. They should also regularly review industry publications, such as ASHRAE’s Journal and HVACR Business, and subscribe to relevant newsletters and updates from regulatory bodies and industry associations. Additionally, professionals can consult with manufacturers, suppliers, and peers to stay informed about the latest developments and best practices in refrigerant handling and management.