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-125

Pure
GWP: 3,500
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 5.0
-45 -49 12.5
-40 -40 21.2
-35 -31 31.2
-30 -22 42.7
-25 -13 55.8
-20 -4 70.7
-15 5 87.4
-10 14 106.1
-5 23 127.0
0 32 150.1
5 41 175.6
10 50 203.6
15 59 234.4
20 68 268.0
25 77 304.5
30 86 344.2
35 95 387.1
40 104 433.5
45 113 483.6
50 122 537.6