If you’re wondering, “What is the new refrigerant and when is the deadline?”—you’re in the right place.
The HVAC industry is on the brink of a significant transformation with the introduction of new refrigerants, driven by environmental concerns and regulatory changes.
This comprehensive guide will walk you through everything you need to know about the upcoming refrigerant changes, including what the new refrigerants are, why they’re being implemented, and the key dates you need to mark on your calendar. By the end, you’ll be fully equipped to navigate this transition and keep your business compliant and competitive.
Understanding the New Refrigerant and Its Mandatory Date
The HVAC world is evolving, and as an HVAC contractor, it’s crucial to stay informed about the latest changes—especially when it comes to refrigerants. The new refrigerants, known as A2Ls (specifically R-454B and R-32), are set to replace the current industry standard, R-410A, due to their lower environmental impact. But when will these changes become mandatory? The answer is January 1, 2025, for manufacturing, with a one-year grace period for installation until January 1, 2026.
What Are Refrigerants and Why Do They Matter?
Refrigerants are the lifeblood of HVAC systems, enabling air conditioners and heat pumps to cool and heat homes and businesses. However, not all refrigerants are created equal. Some, like R-410A, have a high global warming potential (GWP), meaning they can contribute significantly to climate change if released into the atmosphere. In response to growing environmental concerns, the HVAC industry is transitioning to more eco-friendly alternatives. This shift is not just a trend—it’s a regulatory requirement that will affect every HVAC contractor in the coming years.
What Is the New Refrigerant?
The new refrigerants set to replace R-410A are classified as A2Ls, which include R-454B and R-32. These refrigerants have a much lower GWP than R-410A, making them a more sustainable choice for the environment. Here’s a quick breakdown:
- R-454B: With a GWP of approximately 466, R-454B is a leading candidate for residential and light commercial HVAC systems. It’s already being adopted by major manufacturers like Rheem.
- R-32: This refrigerant has a GWP of 675 and is another popular option, particularly for mini-split systems.
Both refrigerants meet the Environmental Protection Agency’s (EPA) requirement for a GWP of 750 or less, which will be enforced starting in 2025. While A2L refrigerants are mildly flammable, they are safe for use in HVAC systems when proper handling and installation procedures are followed. In fact, they are already used in smaller appliances like window units and have been extensively tested for safety.
Why Are We Switching to New Refrigerants?
The transition to A2L refrigerants is driven by the American Innovation and Manufacturing (AIM) Act of 2020, which mandates a phasedown of hydrofluorocarbons (HFCs) like R-410A due to their high GWP. The EPA has set a clear timeline for this change, with the goal of reducing the environmental impact of HVAC systems. By switching to refrigerants with lower GWP, the industry can significantly decrease its contribution to global warming while maintaining the efficiency and reliability homeowners expect.
When Will the New Refrigerant Become Mandatory?

The key date for HVAC contractors to remember is January 1, 2025. Starting on this date, all new residential and light commercial air conditioners and heat pumps manufactured in the U.S. must use A2L refrigerants like R-454B or R-32. However, there is a one-year grace period for installation, meaning equipment manufactured before January 1, 2025, can still be installed until January 1, 2026. After that, all new installations must use equipment with A2L refrigerants.
It’s important to note that existing HVAC systems using R-410A are not affected by these regulations. Homeowners can continue to use and service their current systems, and R-410A will remain available for repairs. However, as production of R-410A decreases over time, its cost may increase, making it more expensive to maintain older systems.
How Will This Affect HVAC Contractors?
As an HVAC contractor, the transition to A2L refrigerants will require some adjustments, but it’s also an opportunity to stay ahead in a rapidly changing industry. Here’s what you need to know:
- Training and Certification: A2L refrigerants are mildly flammable, so technicians will need updated training and certification to handle them safely. This includes learning new installation procedures and safety protocols.
- Equipment and Tools: You’ll need to invest in spark-proof electronic tools and updated equipment for handling A2L refrigerants. Additionally, new HVAC systems will come with built-in safety features like sensors to detect leaks.
- Supply Chain Coordination: Work closely with your suppliers to ensure a smooth transition. Some manufacturers are already phasing out R-410A systems, so it’s crucial to secure inventory of both old and new equipment to avoid delays.
- Customer Communication: Educate your customers about the upcoming changes and how they might affect their HVAC systems. This is especially important for those considering new installations in the next few years.
By taking these steps, you can ensure your business is ready for the transition and positioned as a trusted expert in the eyes of your customers.
Steps to Prepare for the Transition
Here are some actionable steps you can take now:
- Educate Yourself and Your Team: Stay informed about A2L refrigerants and the new regulations through industry resources and training programs.
- Invest in Tools: Purchase spark-proof tools and updated saturation temperature visual aids to handle A2L refrigerants safely.
- Coordinate with Suppliers: Ensure a steady pipeline of both R-410A and A2L equipment to avoid disruptions.
- Inform Your Customers: Be proactive in explaining the changes to your clients, helping them plan for future installations or upgrades.
FAQs About the New Refrigerant and Mandatory Date
What are A2L refrigerants?
A2L refrigerants are a class of refrigerants with lower global warming potential (GWP) and mild flammability. The most common A2Ls for HVAC systems are R-454B and R-32, which will replace R-410A in new equipment starting in 2025.
Why are we switching to A2L refrigerants?
The switch is driven by environmental regulations, specifically the AIM Act of 2020, which aims to reduce the use of high-GWP refrigerants like R-410A. A2L refrigerants have a much lower GWP, making them a more sustainable choice.
When will the new refrigerants become mandatory?
New HVAC equipment must use A2L refrigerants starting January 1, 2025. However, equipment manufactured before this date can still be installed until January 1, 2026.
Will I need to replace my existing HVAC system?
No, existing systems using R-410A can continue to be used and serviced. The new regulations only apply to new equipment manufactured after January 1, 2025.
How will this affect the cost of new HVAC systems?
New systems using A2L refrigerants may be more expensive initially due to redesigned components and additional safety features. However, they are also expected to be more energy-efficient, potentially leading to long-term savings for homeowners.
What do I need to do as an HVAC contractor to prepare for this transition?
Start by educating yourself and your team about A2L refrigerants and the new regulations. Invest in the necessary tools and training, coordinate with suppliers, and communicate with your customers about the changes.
Conclusion: Stay Ahead of the Curve
The transition to A2L refrigerants is a significant but necessary step toward a more sustainable HVAC industry. As an HVAC contractor, staying informed and prepared is key to navigating this change successfully. Remember, the mandatory date for new equipment to use A2L refrigerants is January 1, 2025, with a grace period for installation until January 1, 2026. By taking proactive steps now—such as training your team, updating your tools, and coordinating with suppliers—you can ensure a smooth transition and continue providing top-tier service to your customers.
Don’t wait until the last minute. Start planning today to stay ahead of the curve and position your business as a leader in the evolving HVAC landscape.