For superheat and subcooling calculations in HVAC systems
This pressure-temperature chart shows the relationship between the pressure and saturation temperature for R410A refrigerant. Use this chart to calculate superheat and subcooling when troubleshooting or commissioning HVAC systems.
Superheat = Actual temperature - Saturation temperature (at suction pressure)
Subcooling = Saturation temperature (at liquid pressure) - Actual temperature
| Lower Temperature Range | Higher Temperature Range | ||||||
|---|---|---|---|---|---|---|---|
| Temperature °F |
Temperature °C |
Pressure PSIG |
Pressure kPa |
Temperature °F |
Temperature °C |
Pressure PSIG |
Pressure kPa |
| -40 | -40.0 | 14.6 | 100.7 | 60 | 15.6 | 192.9 | 1330.0 |
| -35 | -37.2 | 18.3 | 126.2 | 65 | 18.3 | 214.0 | 1475.5 |
| -30 | -34.4 | 22.5 | 155.1 | 70 | 21.1 | 236.4 | 1629.9 |
| -25 | -31.7 | 27.2 | 187.5 | 75 | 23.9 | 260.2 | 1793.9 |
| -20 | -28.9 | 32.4 | 223.4 | 80 | 26.7 | 285.4 | 1967.8 |
| -15 | -26.1 | 38.2 | 263.4 | 85 | 29.4 | 312.1 | 2152.5 |
| -10 | -23.3 | 44.6 | 307.5 | 90 | 32.2 | 340.3 | 2346.3 |
| -5 | -20.6 | 51.6 | 355.8 | 95 | 35.0 | 370.0 | 2551.1 |
| 0 | -17.8 | 59.3 | 408.9 | 100 | 37.8 | 401.3 | 2766.9 |
| 5 | -15.0 | 67.7 | 466.8 | 105 | 40.6 | 434.1 | 2993.1 |
| 10 | -12.2 | 76.9 | 530.2 | 110 | 43.3 | 468.8 | 3231.7 |
| 15 | -9.4 | 86.8 | 598.5 | 115 | 46.1 | 505.3 | 3483.3 |
| 20 | -6.7 | 97.5 | 672.3 | 120 | 48.9 | 543.6 | 3747.5 |
| 25 | -3.9 | 109.1 | 751.6 | 125 | 51.7 | 583.8 | 4025.3 |
| 30 | -1.1 | 121.6 | 838.4 | 130 | 54.4 | 626.0 | 4316.9 |
| 35 | 1.7 | 135.1 | 931.5 | 135 | 57.2 | 670.1 | 4620.9 |
| 40 | 4.4 | 149.6 | 1031.5 | 140 | 60.0 | 716.4 | 4939.1 |
| 45 | 7.2 | 165.2 | 1139.1 | 145 | 62.8 | 764.9 | 5273.3 |
| 50 | 10.0 | 178.3 | 1229.4 | 150 | 65.6 | 815.7 | 5623.7 |
| 55 | 12.8 | 193.1 | 1331.4 | ||||