# R-454B
> Mediated Wiki article. Canonical URL: https://mediated.wiki/source/R-454B
> Markdown URL: https://mediated.wiki/source/R-454B.md
> Source: https://en.wikipedia.org/wiki/R-454B
> Source revision: 1300435165
> License: Creative Commons Attribution-ShareAlike 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/)
{{Short description|Refrigerant}}
'''R-454B''', also known by the trademarked names '''Opteon XL41''', '''Solstice 454B''', and '''Puron Advance,''' is a [zeotropic](/source/Zeotropic_mixture) blend of 68.9 percent [difluoromethane](/source/difluoromethane) (R-32), a [hydrofluorocarbon](/source/hydrofluorocarbon), and 31.1 percent [2,3,3,3-tetrafluoropropene](/source/2%2C3%2C3%2C3-tetrafluoropropene) (R-1234yf), a [hydrofluoroolefin](/source/hydrofluoroolefin).[{{cite web | title=ASHRAE Refrigerant Designations | url=https://www.ashrae.org/technical-resources/standards-and-guidelines/ashrae-refrigerant-designations | accessdate=June 27, 2021}}] Because of its reduced [global warming potential](/source/global_warming_potential) (GWP), R-454B is intended to be an alternative to refrigerant [R-410A](/source/R-410A) in new equipment.[{{Cite web | title=Opteon XL41 product information | url=https://www.opteon.com/en/products/refrigerants/xl41 | accessdate=June 27, 2021}}][{{cite web | title=Solstice 454B product information | url=https://www.honeywell-refrigerants.com/europe/product/solstice-454b-r-454b/ | accessdate=June 27, 2021}}][{{cite press release | title=Carrier Introduces Puron Advance | url=https://www.carrier.com/residential/en/us/news/news-article/carrier_introduces_puron_advance_the_next_generation_refrigerant.html | date=December 19, 2018}}] R-454B has a GWP of 466, which is 78 percent lower than R-410A's GWP of 2088.[{{cite journal |date=May 6, 2021 |title=Protection of Stratospheric Ozone: Listing of Substitutes Under the Significant New Alternatives Policy Program |url=https://www.federalregister.gov/documents/2021/05/06/2021-08968/protection-of-stratospheric-ozone-listing-of-substitutes-under-the-significant-new-alternatives |journal=[Federal Register](/source/Federal_Register) |publisher=[United States Environmental Protection Agency](/source/United_States_Environmental_Protection_Agency) |volume=86 |issue=86 |pages=24444–24474}}][{{cite web |title=AHRI Guideline N: 2017 Guideline for Assignment of Refrigerant Container Colors |url=https://www.ahrinet.org/system/files/2023-06/AHRI_Guideline_N_2017.pdf |accessdate=June 27, 2021}}]
There is a shortage of R-454B in the United States as of May 2025.[{{Cite web |date=2025-05-08 |title=Nationwide shortage of new AC refrigerant hits as Arizona heats up |url=https://www.12news.com/article/money/economy/shortage-air-conditioning-refrigerant-causes-problems-for-contractors-delay-ac-installations-valley-homeowners/75-f385fbdc-3541-499a-8382-4aaebcf0c610 |access-date=2025-06-06 |website=12news.com |language=en-US}}][{{Cite web |last=Mufich |first=Adam |date=2025-05-06 |title=Cold Truth: The R-454B Shortage |url=https://www.contractingbusiness.com/refrigeration/article/55288344/cold-truth-the-r-454b-shortage |access-date=2025-06-06 |website=Contracting Business |language=en}}][{{Cite web |title=R-454B Shortage Is No Excuse for Mixing Refrigerants {{!}} ACHR News |url=https://www.achrnews.com/articles/164669-r-454b-shortage-is-no-excuse-for-mixing-refrigerants |access-date=2025-06-06 |website=www.achrnews.com |language=en}}]
==History==
The refrigeration industry has been seeking replacements for R-410A because of its high global warming potential. R-454B, formerly known as DL-5A, has been selected by several manufacturers.[{{cite press release | title=Opteon XL41 (R-454B) and Opteon XP10 (R-513A) Refrigerants selected by Mitsubishi Electric Hydronics and IT Cooling Systems SpA (MEHITS) Applications | url=https://www.chemours.com/en/news-media-center/all-news/press-releases/2019/opteon-xl41-r-454b-and-opteon-xp10-r-513a-refrigerants-selected-by-mitsubishi-electric-hydronics-and | date=May 27, 2019}}][{{cite web | title=Honeywell to offer R454B as alternative to R410A | url=https://www.coolingpost.com/world-news/honeywell-to-offer-r454b-as-alternative-to-r410a | date=March 13, 2021}}][{{cite web | title=Johnson Controls moves to R454B | url=https://www.coolingpost.com/world-news/johnson-controls-moves-to-r454b/ | date=May 27, 2021}}][{{cite web | url=https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=2608&context=iracc | title=Behavior of R410A Low GWP Alternative Refrigerants DR-55, DR-5A, and R32 in the Components of a 4-RT RTU DR-5A, and R32 in the Components of a 4-RT RTU | publisher=Purdue University Purdu | year=2016 | accessdate=June 30, 2021}}]
R-454B was developed at and is manufactured by [Chemours](/source/Chemours). [Carrier](/source/Carrier_Global_Corporation) first announced introduction of R-454B in ducted residential and light commercial packaged refrigeration and air conditioning products in 2018, with R-454B-based products launches starting in 2023.[{{cite web|url=https://www.carrier.com/carrier/en/worldwide/news/news-article/carrier_introduces_puron_advance_the_next_generation_refrigerant.html|title=Carrier Introduces Puron Advance™: The Next Generation Refrigerant for Ducted Residential, Light Commercial Products in North America|publisher=Carrier Corporation (since 2020 Carrier Global Corporation)|date=2018-12-19|accessdate=2021-07-26}}]
==Related refrigerants==
R-454B is not the only blend of [R-32](/source/Difluoromethane) and [R-1234yf](/source/R-1234yf) to be proposed as a refrigerant. Other blends include R-454A (35 percent R-32, 65 percent R-1234yf) and R-454C (21.5 percent R-32, 78.5 percent R1234yf). There are also several blends that include a third component.