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-507A

Azeotropic
GWP: 3,985
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 1.0
-45 -49 1.4
-40 -40 1.9
-35 -31 2.5
-30 -22 3.2
-25 -13 3.9
-20 -4 4.8
-15 5 5.8
-10 14 6.9
-5 23 8.1
0 32 9.5
5 41 11.0
10 50 12.6
15 59 14.5
20 68 16.4
25 77 18.6
30 86 21.0
35 95 23.5
40 104 26.3
45 113 29.3
50 122 32.5