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

kgf/cm²

* 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 kgf/cm²
-50 -58 0.8
-45 -49 1.1
-40 -40 1.6
-35 -31 2.0
-30 -22 2.6
-25 -13 3.2
-20 -4 3.9
-15 5 4.8
-10 14 5.7
-5 23 6.7
0 32 7.9
5 41 9.2
10 50 10.6
15 59 12.2
20 68 13.9
25 77 15.8
30 86 17.9
35 95 20.1
40 104 22.6
45 113 25.2
50 122 28.1
55 131 31.1
60 140 34.5
65 149 38.0
70 158 41.9
75 167 46.0
80 176 50.4