by Victoria Polito, CE HVAC News, January 28, 2025
In 2024, we held a series of three A2L webinars to help our customers prepare for the HFC phase down and transition to A2L refrigerant as smoothly as possible. Each webinar covered a different aspect of the transition along with any timely updates. In our latest webinar, Jason Obrzut, Director of Industry Standards and Relations at ESCO Institute, provided a comprehensive overview of the evolving landscape of refrigerants, focusing on the transition to low-GWP (Global Warming Potential) options and how it impacts the day-to-day life of an HVAC technician.
Missed our webinar? Check out some of the major points of the presentation below or scroll to the bottom for free access to the full webinar recording.
Flammability and Handling
Understanding the safety practices associated with these new refrigerants is essential. The webinar highlighted the importance of safe installation practices and the flammability of new refrigerants. A2L refrigerants are mildly flammable and require specific handling and safety measures. These include leak detection sensors, airflow systems, isolation solenoids, and ventilation. In the event of a fire, the distinction between A2L and A3 refrigerants is significant, with A2L being less flammable and producing less heat compared to A3 refrigerants.
Tools and Equipment
The transition to A2L refrigerants involves changes in tools and equipment. New refrigerant tanks will feature spring-loaded pressure relief valves and left-hand threads, requiring adapters for use. Many existing tools are already compatible with A2L refrigerants, but it’s essential to verify compatibility with the manufacturer’s guidelines. Tools bought in the last five years are likely A2L certified, and full knurling on hoses indicates right-hand threads
Mitigation Measures
To enhance safety, especially in residential settings, units will include various mitigation measures. These include refrigerant detection systems (RDS) that monitor for leaks and are integrated with the unit’s circuit board. If a leak is detected, the unit will shut down and activate the blower to dilute the refrigerant, preventing flammable levels. Initially, many air handlers and furnaces won’t have built-in sensor slots, so external sensors and boards will be used.
Why You Should Watch the Full Webinar
The full webinar delves deeper into each topic, providing detailed charts, visual aids, and expert insights that are invaluable for anyone in the HVAC industry. Whether you’re a technician, contractor or simply interested in the future of refrigerants, the full recording offers a wealth of knowledge that can help you stay ahead in this rapidly evolving field.
Don’t miss out on the opportunity to enhance your understanding and ensure you’re prepared for the upcoming changes in refrigerant technology. Watch the full webinar to get all the details and practical advice you need, in addition to checking out our A2L resource page to get even more information.
