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

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 -3.2
-45 -49 2.0
-40 -40 8.1
-35 -31 15.2
-30 -22 23.4
-25 -13 32.8
-20 -4 43.5
-15 5 55.7
-10 14 69.4
-5 23 84.8
0 32 101.9
5 41 120.9
10 50 142.0
15 59 165.2
20 68 190.8
25 77 218.8
30 86 249.5
35 95 282.9
40 104 319.3
45 113 358.7
50 122 401.4