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

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 1.4
-45 -49 1.9
-40 -40 2.5
-35 -31 3.2
-30 -22 4.0
-25 -13 5.0
-20 -4 6.0
-15 5 7.2
-10 14 8.5
-5 23 10.0
0 32 11.6
5 41 13.4
10 50 15.4
15 59 17.5
20 68 19.9
25 77 22.4
30 86 25.2
35 95 28.3
40 104 31.5
45 113 35.0
50 122 38.8