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

kPa

* 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 kPa
-50 -58 135.0
-45 -49 187.0
-40 -40 247.0
-35 -31 316.0
-30 -22 396.0
-25 -13 486.0
-20 -4 588.0
-15 5 703.0
-10 14 832.0
-5 23 977.0
0 32 1,136.0
5 41 1,312.0
10 50 1,505.0
15 59 1,717.0
20 68 1,949.0
25 77 2,200.0
30 86 2,474.0
35 95 2,770.0
40 104 3,090.0
45 113 3,435.0
50 122 3,807.0