# R-454A — HVAC refrigerant replacements: retrofit compatibility, safety class, GWP and lubricant For R-454A, replaces is R-404A; trade name(s) is Opteon™ XL40; ashrae safety class is A2L; gwp is 239 (238), verified against its source on 2026-08-11. - **Refrigerant:** R-454A _(verified: appears in the quote below)_ - **Replaces:** R-404A _(verified: appears in the quote below)_ - **Trade name(s):** Opteon™ XL40 _(verified: appears in the quote below)_ - **ASHRAE safety class:** A2L _(verified: appears in the quote below)_ - **GWP:** 239 (238) _(verified: appears in the quote below)_ ## What the source says > Opteon™ XL40 R-454A R-404A A2L 239 (238) -54 Freon™ 410A R-410A N/A A1 2088 (1924) -61 ## Source - https://www.chemours.com/en/-/media/files/freon/opteon-freon-general-replacement-guide.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/).