# R-454B — HVAC refrigerant replacements: retrofit compatibility, safety class, GWP and lubricant

For R-454B, replaces is R-410A; trade name(s) is Opteon™ XL41; ashrae safety class is A2L; gwp is 466 (467), verified against its source on 2026-08-11.

- **Refrigerant:** R-454B _(verified: appears in the quote below)_
- **Replaces:** R-410A _(verified: appears in the quote below)_
- **Trade name(s):** Opteon™ XL41 _(verified: appears in the quote below)_
- **ASHRAE safety class:** A2L _(verified: appears in the quote below)_
- **GWP:** 466 (467) _(verified: appears in the quote below)_
- **Compatible lubricant:** POE oil _(per prod-edam.honeywell.com, not stated by the source above)_

## What the source says

> Opteon™ XL20 R-454C R-407A A2L 148 (146) -50 Opteon™ XL41 R-454B R-410A A2L 466 (467) -51

## What prod-edam.honeywell.com says

> R-454B is now a primary replacement for R-410A. Due to • Liquid drain line velocity kept below 100fpm this, compressors are—and will continue to be—available. The • All sizes indicate outside dimensions type K or L copper tubing components in R-454B (R-32 / R-1234yf) are well-known • Equivalent length should include equivalent length for fittings. Refer to fluids and should pose no complications for compressor ASHRAE guidelines. manufacturers. R-454B generally uses POE oil.

Source: https://prod-edam.honeywell.com/content/dam/honeywell-edam/pmt/oneam/en-us/refrigerants/documents/pmt-am-solstice-454b-applications-guide.pdf

## What shareddocs.com says

> For Carrier and its associated brands, that means a transition from R-410A to R-454B, which has one fourth the GWP of R-410A*. R-454B is in a specific class of refrigerants known as A2L, whereas R-410A is a class A1 refrigerant.

Source: https://www.shareddocs.com/hvac/docs/1006/Public/06/570-178.pdf

## Source

- https://www.chemours.com/en/-/media/files/freon/opteon-freon-general-replacement-guide.pdf
- https://prod-edam.honeywell.com/content/dam/honeywell-edam/pmt/oneam/en-us/refrigerants/documents/pmt-am-solstice-454b-applications-guide.pdf
- https://www.shareddocs.com/hvac/docs/1006/Public/06/570-178.pdf

Last verified: 2026-08-11. Review by: 2027-08-11.
Part of [HVAC refrigerant replacements: retrofit compatibility, safety class, GWP and lubricant](https://referencesource.org/hvac-component-refrigerant-compatibility/).