R-410A pressure-temperature chart
R-410A pressure-temperature chart with saturation pressure from -40°F to 140°F, generated from CoolProp; bubble and dew columns are shown where applicable.
Quick check: units, range and diagnosis
- Units: temperature is shown in °F with the °C equivalent; pressure is gauge pressure in PSIG at the stated sea-level reference.
- Range: this table covers −40°F through 140°F in 5°F steps. Values outside that range require a separate verified source.
- Diagnostic use: match a stabilized gauge reading with the measured line temperature, then check airflow, operating mode and the manufacturer’s superheat or subcooling procedure. A pressure lookup alone is not a charge or fault diagnosis.
For blends, use the manufacturer’s dew or bubble convention. For single-component refrigerants, the two columns may be identical. Altitude, pressure drop and field safety controls remain outside this lookup.
What this refrigerant PT chart answers
R-410A is a high-pressure blend used in many legacy and replacement split systems.
This page is maintained by the HVAC Calculator Pro Editorial Team. We publish the inputs, calculation basis and limitations so a technician can reproduce the screening result and decide what must be checked in the field. It is a reference aid, not a substitute for the governing code, a licensed designer or the equipment manufacturer's instructions.
Saturation pressure table
gauge pressure · sea-level reference| Temperature | Equivalent | Bubble PSIG | Dew PSIG |
|---|---|---|---|
| -40 °F | -40.0 °C | 10.8 PSIG | 10.7 PSIG |
| -35 °F | -37.2 °C | 14.1 PSIG | 14.0 PSIG |
| -30 °F | -34.4 °C | 17.8 PSIG | 17.7 PSIG |
| -25 °F | -31.7 °C | 21.9 PSIG | 21.8 PSIG |
| -20 °F | -28.9 °C | 26.3 PSIG | 26.2 PSIG |
| -15 °F | -26.1 °C | 31.2 PSIG | 31.0 PSIG |
| -10 °F | -23.3 °C | 36.5 PSIG | 36.3 PSIG |
| -5 °F | -20.6 °C | 42.2 PSIG | 42.0 PSIG |
| 0 °F | -17.8 °C | 48.4 PSIG | 48.2 PSIG |
| 5 °F | -15.0 °C | 55.2 PSIG | 54.9 PSIG |
| 10 °F | -12.2 °C | 62.4 PSIG | 62.2 PSIG |
| 15 °F | -9.4 °C | 70.3 PSIG | 70.0 PSIG |
| 20 °F | -6.7 °C | 78.7 PSIG | 78.4 PSIG |
| 25 °F | -3.9 °C | 87.7 PSIG | 87.4 PSIG |
| 30 °F | -1.1 °C | 97.4 PSIG | 97.0 PSIG |
| 35 °F | 1.7 °C | 107.7 PSIG | 107.3 PSIG |
| 40 °F | 4.4 °C | 118.8 PSIG | 118.4 PSIG |
| 45 °F | 7.2 °C | 130.6 PSIG | 130.1 PSIG |
| 50 °F | 10.0 °C | 143.1 PSIG | 142.6 PSIG |
| 55 °F | 12.8 °C | 156.5 PSIG | 156.0 PSIG |
| 60 °F | 15.6 °C | 170.7 PSIG | 170.1 PSIG |
| 65 °F | 18.3 °C | 185.8 PSIG | 185.1 PSIG |
| 70 °F | 21.1 °C | 201.7 PSIG | 201.1 PSIG |
| 75 °F | 23.9 °C | 218.6 PSIG | 217.9 PSIG |
| 80 °F | 26.7 °C | 236.5 PSIG | 235.7 PSIG |
| 85 °F | 29.4 °C | 255.4 PSIG | 254.6 PSIG |
| 90 °F | 32.2 °C | 275.3 PSIG | 274.5 PSIG |
| 95 °F | 35.0 °C | 296.4 PSIG | 295.4 PSIG |
| 100 °F | 37.8 °C | 318.5 PSIG | 317.6 PSIG |
| 105 °F | 40.6 °C | 341.9 PSIG | 340.8 PSIG |
| 110 °F | 43.3 °C | 366.5 PSIG | 365.4 PSIG |
| 115 °F | 46.1 °C | 392.3 PSIG | 391.2 PSIG |
| 120 °F | 48.9 °C | 419.5 PSIG | 418.3 PSIG |
| 125 °F | 51.7 °C | 448.0 PSIG | 446.8 PSIG |
| 130 °F | 54.4 °C | 478.0 PSIG | 476.8 PSIG |
| 135 °F | 57.2 °C | 509.5 PSIG | 508.4 PSIG |
| 140 °F | 60.0 °C | 542.6 PSIG | 541.5 PSIG |
How to use this R-410A pressure-temperature chart
- Identify the refrigerant and confirm the unit's design data plate.
- Measure line temperature at the same stable operating point as the gauge pressure.
- Use the chart to translate saturation temperature and then apply the manufacturer's superheat or subcooling procedure.
Worked example: At 70°F, this table is about 201.7 PSIG gauge at sea-level reference; a manifold reading is not a direct charge verdict. For charging by subcooling, compare the liquid-line temperature with the manufacturer's target after airflow and indoor wet-bulb conditions are stable.
Record the result with the project address, equipment model, code edition and assumptions. That audit trail is more useful than copying a single number without its conditions.
Continue with the right tool
What is specific to R-410A
R-410A has no temperature glide large enough to use a generic dew/bubble shortcut in field charging, but always follow the unit manual.
Safety and climate profile: Safety classification A1; approximate 100-year GWP 2,088; negligible glide for this reference.
PSIG is gauge pressure. Absolute pressure adds local atmospheric pressure, so a gauge reading cannot be compared directly with an absolute-pressure chart without conversion.
For the governing safety and refrigerant-transition context, consult the U.S. EPA refrigerant guidance and the equipment manufacturer documentation.
Use boundary: This table does not model line pressure drop, superheat, subcooling, altitude correction or field safety controls. Confirm the correct blend basis and dew/bubble convention before using it.
Common questions
Can I use the R-410A pressure alone to charge a system?
No. Pressure must be interpreted with line temperature, airflow, operating mode and the manufacturer's charging method.
Why does this R-410A page say bubble point?
Bubble point is the saturated-liquid reference used by this generated table. Zeotropic blends may also require a dew-point reference, so the service procedure controls.
Cite or reuse this table
This dataset is free to cite, quote and redistribute with attribution. Use the stable URL below — it does not change when the table is regenerated.
HVAC Calculator Pro. (2026-10-07). R-410A Pressure Temperature Chart (-40°F to 140°F Printable). Retrieved from https://hvaccalcpro.com/refrigerants/r-410a-pt-charthttps://hvaccalcpro.com/refrigerants/r-410a-pt-chart