R-454B: Refrigerant of the Future

R-454B to Replace R-410A Refrigerant by 2023
Tempstar® Engineers Select R-454B as a Lower Global Warming Potential Solution

After extensive testing and evaluation, engineers at Tempstar® Heating and Cooling Products have selected R-454B to replace R-410A refrigerant in all of its ducted residential and light commercial packaged solutions sold in North America. 

This refrigerant of the future is expected to surpass anticipated 2023 regulations.

With a global warming potential (GWP) of 466 — about one-fifth that of R-410A — R-454B refrigerant was chosen as the preferred solution to help:

Check out the Q&A below for more information about R-454B.


Q: Why did Tempstar Heating and Cooling Products decide to use R-454B to replace R-410A?

A: Based on the United Nations Montreal Protocol phase-down plan for hydrofluorocarbons (HFCs), R-454B was selected as the preferred refrigerant to balance environmental impact, product performance, safety, and longevity. R-454B also has a GWP of 466 — about one-fifth the GWP of R-410A. 


Q: Why wasn't R-32 chosen for ducted residential and light commercial products? 

A: R-32 has a higher GWP at 675.

R-454B was selected for Tempstar ducted residential and light commercial products because it has a lower GWP with good reliability and performance. It is also expected to have significantly better equipment longevity than alternatives. Other applications may have a different solution, but engineers at Tempstar feel R-454B is well-suited for its ducted residential and light commercial products. 


Q: When will we transition to R-454B? 

A: The transition to R-454B will begin in 2023. It will eventually replace the current R-410A refrigerant in all Tempstar ducted residential and light commercial products sold in North America.


Q: Why is the transition to R-454B beginning in 2023?

A: The industry and its regulators are introducing new building codes and safety standards that are scheduled to take effect in 2023. As a manufacturer, we want to be ready when those new regulations commence. In addition, California will be banning R-410A in new equipment in 2023.


Q: Is this product 100% safe? 

A: Some of the lowest GWP alternatives to R-410A are mildly flammable. Tempstar Heating and Cooling Products has been working closely with regulators and research groups to develop safety standards, codes and regulations to help ensure the use of R-454B is safe.


Q: Why isn't R-454B going to be used in all Tempstar products?

A: While R-454B will be the refrigerant utilized in ducted residential and light commercial applications, Tempstar Heating and Cooling Products remains committed to using the best-suited refrigerant solution for each application as the need arises.


Tempstar Heating and Cooling Products is excited about choosing R-454B as its long-term refrigerant solution. Contact your regional business manager and look for additional details on www.GoTempstar.com as we prepare to transition from R-410A.