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

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 -0.8
-45 -49 5.5
-40 -40 12.7
-35 -31 21.0
-30 -22 30.5
-25 -13 41.3
-20 -4 53.7
-15 5 67.6
-10 14 83.2
-5 23 100.7
0 32 120.0
5 41 141.4
10 50 165.0
15 59 190.8
20 68 219.2
25 77 250.0
30 86 283.6
35 95 320.0
40 104 359.4
45 113 401.9
50 122 447.8