# R-1234yf — HVAC refrigerant replacements: retrofit compatibility, safety class, GWP and lubricant

For R-1234yf, replaces is R-134a; trade name(s) is Opteon™ XL10; ashrae safety class is A2L; gwp is 4 (1), verified against its source on 2026-08-11.

- **Refrigerant:** R-1234yf _(verified: appears in the quote below)_
- **Replaces:** R-134a _(verified: appears in the quote below)_
- **Trade name(s):** Opteon™ XL10 _(verified: appears in the quote below)_
- **ASHRAE safety class:** A2L _(verified: appears in the quote below)_
- **GWP:** 4 (1) _(verified: appears in the quote below)_

## What the source says

> Opteon™ XP10 R-513A R-134a A1 631 (573) -21 Opteon™ XL10 R-1234yf R-134a A2L 4 (1) -21

## 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/).