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

bar

* 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 bar
-50 -58 1.4
-45 -49 1.9
-40 -40 2.5
-35 -31 3.2
-30 -22 4.0
-25 -13 4.9
-20 -4 5.9
-15 5 7.0
-10 14 8.3
-5 23 9.8
0 32 11.4
5 41 13.1
10 50 15.1
15 59 17.2
20 68 19.5
25 77 22.0
30 86 24.7
35 95 27.7
40 104 30.9
45 113 34.4
50 122 38.1