Refrigerant Pressure Tables / R449A
Saturation pressure (bar, absolute) by temperature — dew point & bubble point.
Dew point and bubble point differ — this refrigerant is a zeotropic blend with temperature glide. Use the point matching your measurement (evaporator/condenser side) for charge and subcooling calculations.
GWP100: 1397 (AR5/AR4 basis, as used in the Enthalio app).
| Temp °C | Bubble point (bar) | Dew point (bar) |
|---|---|---|
| -50 | 0.82 | 0.6037 |
| -48 | 0.9064 | 0.6721 |
| -46 | 0.9997 | 0.7466 |
| -44 | 1.1006 | 0.8275 |
| -42 | 1.2093 | 0.9152 |
| -40 | 1.3262 | 1.0101 |
| -38 | 1.4519 | 1.1127 |
| -36 | 1.5867 | 1.2233 |
| -34 | 1.731 | 1.3424 |
| -32 | 1.8854 | 1.4704 |
| -30 | 2.0502 | 1.6078 |
| -28 | 2.226 | 1.7551 |
| -26 | 2.4133 | 1.9126 |
| -24 | 2.6124 | 2.081 |
| -22 | 2.824 | 2.2606 |
| -20 | 3.0485 | 2.4521 |
| -18 | 3.2864 | 2.6558 |
| -16 | 3.5382 | 2.8724 |
| -14 | 3.8045 | 3.1024 |
| -12 | 4.0858 | 3.3463 |
| -10 | 4.3825 | 3.6046 |
| -8 | 4.6954 | 3.878 |
| -6 | 5.0248 | 4.167 |
| -4 | 5.3715 | 4.4721 |
| -2 | 5.7358 | 4.7941 |
| 0 | 6.1184 | 5.1334 |
| 2 | 6.5199 | 5.4907 |
| 4 | 6.9408 | 5.8666 |
| 6 | 7.3817 | 6.2618 |
| 8 | 7.8432 | 6.6768 |
| 10 | 8.3259 | 7.1124 |
| 12 | 8.8304 | 7.5693 |
| 14 | 9.3574 | 8.048 |
| 16 | 9.9073 | 8.5493 |
| 18 | 10.4809 | 9.074 |
| 20 | 11.0787 | 9.6226 |
| 22 | 11.7014 | 10.1961 |
| 24 | 12.3496 | 10.795 |
| 26 | 13.024 | 11.4203 |
| 28 | 13.7251 | 12.0727 |
| 30 | 14.4538 | 12.7529 |
| 32 | 15.2106 | 13.4619 |
| 34 | 15.9962 | 14.2006 |
| 36 | 16.8113 | 14.9697 |
| 38 | 17.6565 | 15.7702 |
| 40 | 18.5326 | 16.6031 |
| 42 | 19.4404 | 17.4694 |
| 44 | 20.3804 | 18.3701 |
| 46 | 21.3534 | 19.3062 |
| 48 | 22.3603 | 20.279 |
| 50 | 23.4016 | 21.2896 |
| 52 | 24.4783 | 22.3392 |
| 54 | 25.5911 | 23.4293 |
| 56 | 26.7407 | 24.5614 |
| 58 | 27.928 | 25.7369 |
| 60 | 29.1538 | 26.9576 |
Source: CoolProp (open thermophysical property library), same data basis as the Enthalio app.
Open PT calculator in Enthalio →