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-513A

Azeotropic
GWP: 631
ODP: 0
Safety Class: A1

Near drop-in replacement for R-134a. Compatible with existing R-134a systems with POE oil. Zero temperature glide (azeotropic).

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 37.0
-45 -49 54.0
-40 -40 51.0
-35 -31 75.0
-30 -22 102.0
-25 -13 135.0
-20 -4 171.0
-15 5 211.0
-10 14 256.0
-5 23 307.0
0 32 363.0
5 41 426.0
10 50 495.0
15 59 570.0
20 68 654.0
25 77 745.0
30 86 844.0
35 95 952.0
40 104 1,069.0
45 113 1,196.0
50 122 1,333.0
55 131 1,481.0
60 140 1,640.0
65 149 1,811.0
70 158 1,995.0
75 167 2,190.0
80 176 2,399.0