R-410A (HFC)
R-410A PT Chart
The full R-410A pressure-temperature reference table, from -20 to 130°F. R-410A reads on one saturation column with no usable glide. Checked cell by cell against 3 other published tables, 1 of them a separate publisher: Arkema, CoolProp and Weitron. Arkema and Weitron print identical numbers, so they count as one publisher rather than two. One of them, Weitron, has a full column on file here, so this chart prints where that table and ours disagree at every pressure instead of quietly picking one. The widest gap anywhere on it is 0.74 degrees F, against Weitron, at 26.9 psig.
R-410A Pressure-Temperature Table
| R-410A | ||
|---|---|---|
| Pressure (psig) | Sat. Temp (°F) | Publisher spread (°F) |
| 26.9 | -20°F | 0.74 |
| 31.7 | -15°F | 0.70 |
| 36.8 | -10°F | 0.45 |
| 42.5 | -5°F | 0.42 |
| 48.6 | 0°F | 0.31 |
| 55.2 | 5°F | 0.21 |
| 62.3 | 10°F | 0.07 |
| 70 | 15°F | 0 |
| 78.3 | 20°F | 0.06 |
| 87.3 | 25°F | 0.03 |
| 96.8 | 30°F | 0.10 |
| 107 | 35°F | 0.16 |
| 118 | 40°F | 0.18 |
| 130 | 45°F | 0.06 |
| 142 | 50°F | 0.24 |
| 155 | 55°F | 0.35 |
| 170 | 60°F | 0.04 |
| 185 | 65°F | 0.06 |
| 201 | 70°F | 0.03 |
| 217 | 75°F | 0.28 |
| 235 | 80°F | 0.22 |
| 254 | 85°F | 0.15 |
| 274 | 90°F | 0.12 |
| 295 | 95°F | 0.12 |
| 317 | 100°F | 0.13 |
| 340 | 105°F | 0.19 |
| 365 | 110°F | 0.08 |
| 391 | 115°F | 0.04 |
| 418 | 120°F | 0.06 |
| 446 | 125°F | 0.14 |
| 476 | 130°F | 0.13 |
About the spread column. It is the widest gap in saturation temperature between the published tables we hold, at that pressure, on the saturation column. Across this chart the widest is 0.74°F, at 26.9 psig. Our table and 1 other published table are compared here: 1 is a separate publisher. A narrow spread means the charts agree, which is not the same as the charts being right: they are all computed from equations of state fitted to lab data, and no field measurement settles it.
- Checked against Arkema Forane R-410A, all 31 shipped cells within 1.0 psig on its vapor column, the column Hudson tracks; widest gap 1.0 psig at 55F [same printing as Weitron]
- Checked against CoolProp-derived tables, anchor points agree [same model]
- Checked against Weitron, reprinted as Daikin/Goodman PM-A2LPTC-USA_04-24, within 0.75 F across the shipped range [separate publisher]
R-410A is carried as a single-column near-azeotrope. Forane prints a real 0.0 to 1.2 psig liquid and vapor split, which biases subcooling by about 0.2 F across 90 to 130 F condensing. That sits inside the 1.0 F manufacturer tolerance and is left unmodelled and disclosed here rather than silently corrected.
A separate publisher can catch a transcription, edition or rounding error. A cross-check marked same model resolves to the same equation of state as the base table, so it is a consistency check rather than independent confirmation. One marked same printing prints numbers identical to another table listed here, so the two are one witness and we do not count them twice. Sources last re-verified 2026-08-25.
Read the low-side (suction) pressure and find its saturation temperature for superheat, and read the high-side (liquid) pressure and its saturation temperature for subcooling. The chart is in psig (gauge) and °F. To convert: kPa gauge = psig × 6.895; °C = (°F − 32) / 1.8.
R-410A PT Chart FAQs
What is the R-410A pressure at 40F and 100F?
On the R-410A PT chart, 40F saturation is about 118 psig and 100F is about 317 psig, rising to 476 psig at 130F. R-410A is a near-azeotropic blend read on a single saturation column, so the same saturation temperature serves both superheat (suction side) and subcooling (liquid side).
Does the R-410A PT chart have glide (bubble and dew)?
No usable glide. R-410A is a near-azeotrope: its glide is a fraction of a degree, small enough that the field reads it on one saturation column like a pure refrigerant. Zeotropic blends such as R-454B, R-407C, and R-448A are the ones that list a separate bubble and dew temperature at each pressure.
Is the R-410A PT chart the same as R-454B?
No, but they are close. R-410A runs a little higher: about 6 psig above R-454B at 40F and 16 psig higher at 100F condensing. That is why R-454B is a low-glide near-match on the pressure side, but it is still not an actual drop-in because it is A2L and needs A2L-rated equipment. Read each refrigerant on its own column.
What units is this R-410A PT chart in, and how do I convert to kPa or Celsius?
The table is in psig (gauge pressure) and degrees Fahrenheit, the field-standard units in North America. To convert pressure to kPa (gauge), multiply psig by 6.895. To convert temperature to Celsius, use C = (F - 32) / 1.8. For example, 100F is about 37.8C.
Related R-410A Tools
R-410A Superheat & Subcooling Calculator
Enter your readings; the calculator interpolates this PT chart and returns the verdict.
R-454B vs R-410A
The A2L replacement in new ducted systems: pressures, GWP, glide, and the line-set question.
R-410A Phase-Out and A2L Transition
What the 2025 GWP cutoff changed, and why existing R-410A systems keep running.
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