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

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 0.8
-45 -49 1.2
-40 -40 1.6
-35 -31 2.1
-30 -22 2.6
-25 -13 3.3
-20 -4 4.0
-15 5 4.9
-10 14 5.8
-5 23 6.9
0 32 8.0
5 41 9.3
10 50 10.8
15 59 12.4
20 68 14.2
25 77 16.1
30 86 18.2
35 95 20.5
40 104 23.0
45 113 25.7
50 122 28.7