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“What's new in hvac: R‑454B vs. R‑32: Choosing the Right Refrigerant”

  • Writer: Donald Colbert
    Donald Colbert
  • Jul 15
  • 3 min read

Updated: Aug 12

Title: R‑454B vs. R‑32: Which A2L Refrigerant Is Best for Your HVAC System?


Meta Description: Explore the differences between R‑454B and R‑32—efficiency, environmental impact, safety, and cost—to help Metro‑Atlanta homeowners make the right refrigerant choice.


Intro

The phase-out of R‑410A is starting in 2025. This change is pushing a move to A2L refrigerants. In this article, we will compare R‑454B and R‑32 for your HVAC upgrade. Understanding these refrigerants will help you make an informed decision.


What Are They?

R‑32

R‑32 is a single-component refrigerant. It has a Global Warming Potential (GWP) of approximately 675. This refrigerant is classified as A2L.



HVAC Manufacturers Using R-32 in Residential Systems

R‑32 is a single-component refrigerant with a Global Warming Potential (GWP) of approximately 675, classified as A2L. Below is a list of HVAC manufacturers that incorporate R-32 in their residential systems:

  • Daikin

  • Mitsubishi Electric

  • LG Electronics

  • Fujitsu General

  • Panasonic

  • Samsung

  • Trane

  • American Standard

  • Carrier

  • Rheem

  • Goodman

  • York

These manufacturers are leading the way in adopting R-32 refrigerant for improved energy efficiency and lower environmental impact in residential HVAC systems.


R‑454B

R‑454B is a blend of 68.9% R‑32 and 31.1% R‑1234yf. Its GWP is around 466. This makes it a more environmentally friendly option.



HVAC Manufacturers Using R-454B in Residential Systems in Atlanta, Georgia

R‑454B is a blend of 68.9% R‑32 and 31.1% R‑1234yf. Its GWP is around 466, making it a more environmentally friendly option. Below is a list of HVAC manufacturers that offer residential systems using R-454B in Atlanta, Georgia:

  • Carrier

  • Trane

  • Lennox

  • Rheem

  • Goodman

  • York

  • American Standard

  • Daikin

  • Mitsubishi Electric

  • Fujitsu

These manufacturers are increasingly adopting R-454B in their residential HVAC systems to enhance energy efficiency and reduce environmental impact.


Key Differences

Environmental Impact

R‑454B has a lower GWP compared to R‑32. However, R‑32 uses less energy over time, which can offset its environmental impact.


Energy Efficiency

R‑32 offers 5–10% better efficiency under real-world conditions. This efficiency can lead to lower energy bills for homeowners.


Safety & Handling

Both R‑32 and R‑454B are mildly flammable and classified as A2L. However, R‑32 is more widely used and understood in the industry, making it easier to handle.


Maintenance

R‑32 is simpler to maintain. As a single-component refrigerant, it allows for top-ups instead of requiring a full recharge. This can save time and money in the long run.


Availability

R‑32 benefits from global adoption and is readily available. In contrast, R‑454B faces shortages and often comes with higher equipment costs.


What Homeowners Should Know

New Systems

For new HVAC systems, R‑32 is often the smarter long-term choice. Its efficiency and availability make it a reliable option.


Retrofitting R‑410A

For retrofitting R‑410A or in low-flare spaces, R‑454B may be safer and easier to implement. It can provide a smoother transition for older systems.


Real Tech Insight (Reddit)

“All the big US residential ducted systems are using R‑454B, except Daikin Goodman who is using R‑32.” This highlights the current trends in refrigerant usage.


Why Choose Temp Pro's?

Are you looking for expert advice on refrigerant requirements? Look no further! Temp Pro offers specialized consultations to help you understand the best options for your specific needs.


Expert Guidance

Our knowledgeable team can provide insights into the latest refrigerant regulations and options available. We stay updated on industry changes to serve you better.


Customized Solutions

We understand that every situation is unique. Our recommendations are tailored to fit your specific requirements, ensuring you get the best solution.


Ongoing Support

We’re here for you even after the initial consultation. Our team ensures you have the support you need as your refrigerant needs evolve.


How to Start a Conversation

Getting in touch with Temp Pro's is easy! Reach out to us through our website or give us a call to schedule a consultation. Our team is ready to assist you in navigating your refrigerant requirements effectively.


Let’s Talk Refrigerants!

Don’t leave your refrigerant needs to chance. Connect with Temp Pro's today and ensure your business stays compliant and efficient! Schedule a consultation or refrigerant evaluation.


Conclusion

In conclusion, choosing between R‑454B and R‑32 depends on your specific needs. Both refrigerants have their advantages and disadvantages. By understanding these differences, you can make an informed decision that benefits your HVAC system and the environment.


For more information on refrigerants, visit Temp Pro's.

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