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-143a

Pure
GWP: 4,470
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 79.0
-45 -49 115.0
-40 -40 157.0
-35 -31 206.0
-30 -22 262.0
-25 -13 327.0
-20 -4 401.0
-15 5 485.0
-10 14 579.0
-5 23 685.0
0 32 803.0
5 41 934.0
10 50 1,080.0
15 59 1,240.0
20 68 1,417.0
25 77 1,609.0
30 86 1,820.0
35 95 2,051.0
40 104 2,302.0
45 113 2,574.0
50 122 2,868.0