R-454B Pressure Temperature Chart
Saturation pressure (PSIG) for R-454B at temperatures from -40°F to 120°F. The next-generation replacement for R-410A in residential HVAC.
| Temp (°F) | Pressure (PSIG) |
|---|---|
| -40°F | 5.8 |
| -20°F | 24.6 |
| 0°F | 49.4 |
| 20°F | 81.9 |
| 40°F | 123.5 |
| 60°F | 176.0 |
| 80°F | 241.2 |
| 100°F | 321.5 |
| 120°F | 419.1 |
Frequently Asked Questions
What is the saturation pressure of R-454B at 80°F?
At 80°F, R-454B has a saturation pressure of 241.2 PSIG.
What is R-454B replacing?
R-454B (sold under the brand name Opteon XL41 by Chemours) is the leading replacement for R-410A in residential and light commercial air conditioning and heat pump systems. It has a GWP of 466, which is about 78% lower than R-410A.
Is R-454B a drop-in replacement for R-410A?
No, R-454B is not a drop-in replacement. It requires equipment specifically designed for it due to its A2L (mildly flammable) classification. New safety standards, installation practices, and equipment designs are required. However, operating pressures are similar to R-410A.
When will R-454B equipment be available?
Major manufacturers began releasing R-454B equipment in 2025. New residential AC and heat pump systems sold in the US are transitioning to R-454B and other low-GWP alternatives under the AIM Act phase-down schedule.