HVAC Toolkit

Pressure-Temperature Charts

Saturation P-T data for common refrigerants

Select Refrigerant

HFC / HCFC

R-22 R-32 R-125 R-134a R-143a R-404A Z R-407C Z R-410A R-507A

Low GWP (HFO)

R-449A Z R-454B Z Low GWP R-513A R-1234yf Low GWP R-1234ze(E) Low GWP

Natural

R-290 (Propane) Low GWP R-600a (Isobutane) Low GWP R-744 (CO2) Low GWP R-717 (NH3) Low GWP

Pressure Unit

psig kPa bar kgf/cm²

R-410A

Near-azeotropic
GWP: 2,088
ODP: 0

Quick P-T Lookup

psig

* Results are interpolated from the P-T table data

Pressure Units: psig = Gauge pressure (relative to atmosphere) kPa / bar / kgf/cm² = Absolute pressure

°C °F psig
-50 -58 -3.6
-45 -49 1.5
-40 -40 7.4
-35 -31 14.2
-30 -22 22.1
-25 -13 31.1
-20 -4 41.4
-15 5 53.1
-10 14 66.3
-5 23 81.1
0 32 97.6
5 41 116.0
10 50 136.3
15 59 158.7
20 68 183.2
25 77 210.1
30 86 239.5
35 95 271.4
40 104 306.1
45 113 343.7
50 122 384.3
55 131 428.1
60 140 475.3
65 149 526.1
70 158 580.7
75 167 639.4
80 176 702.5