The Evolution of Refrigerant
EVOLUTION
OF REFRIGERANT
- R22 “FREON” (phased out in 2020)
- R-410A “PURON” (current)
- R-454B “PURON ADVANCE” (2026+)
Not many homeowners are aware but a new refrigerant will be coming out soon, called Puron Advance R454B. It’s important we act as informed experts and we are up to date with the latest info.
- In 2020, the production of "Freon" R22 was banned, limiting the market to only recycled R22, which is now scarce and has driven prices up significantly.
- As this phase-out of R22 comes to a close, the majority of America’s heating and cooling systems currently operate on “Puron” R-410A refrigerant. However, with the EPA's new mandate to reduce the Global Warming Potential (GWP) of refrigerants, a new refrigerant is set to take its place.
- Starting in 2025, the industry will begin transitioning to “Puron Advance” R-454B refrigerant to meet these environmental standards and reduce greenhouse gas emissions. With a GWP of 466—compared to R-410A’s 2,088—R-454B provides a more sustainable, eco-friendly alternative. Additionally, R-454B offers similar performance characteristics to R-410A, making the transition easier for manufacturers and technicians alike.
- As we approach this transition period, we aim to inform our customers who may be considering a system replacement in the near future. For those weighing the choice between R-410A and the upcoming R-454B, understanding the benefits and long-term implications of each option will help make the best decision for your needs.
Here are some main takeaways to consider when choosing to wait for 454b.
- The availability timeline for R-454B equipment is currently unpredictable, and models may be released sporadically throughout 2025.
- R-410A will remain available for the full lifespan of existing systems and beyond.
- Pricing: We anticipate a double-digit increase in costs for R-454B equipment
- R-454B has higher flammability characteristics, requiring the addition of safety devices during manufacturing and additional safety measures during service, including the use of non-sparking tools
The production of R-410A is not being phased out like R-22; instead, it is being gradually phased down. R-410A will continue to be manufactured to support existing systems and will remain available for the lifespan of any R-410A system purchased today —and beyond.
The year 2025 will be the first generation of equipment operating with the new refrigerant, and like a new model car, it’s likely to have some initial adjustments and unforeseen characteristics that may need fine-tuning.
On the other hand, the current R-410A models are tried and true, trusted to deliver reliable performance and peace of mind with no unexpected surprises.
With the addition of new safety technology and R&D investments, manufacturers are advising distributors and contractors that equipment costs for R-454B systems could increase by 20% or more.
Due to the higher flammability characteristics of the new refrigerant, added safety features like refrigerant detection sensors and additional circuit boards are required in the equipment to ensure safe operation.
The efficiency of R-454B equipment will be comparable to that of R-410A, so the primary benefit of replacing with R-454B is the positive environmental impact, and the biggest disadvantage being the increased replacement cost.
SYSTEM DESIGN CHANGES
New systems with Puron Advance will include:
Indoor Units
- Factory-installed leak detection
- Active dissipation system
- Ignition source isolation
- No competent ignition sources
- New metering devices for different pressures
- Straight liquid and vapor lines on all tiers to allow brazing or press fitting use
Outdoor Units
- New metering devices for different pressures
- New compressors
- Straight service valves on all tiers to allow brazing or press fitting use