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

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 -9.4
-45 -49 -6.8
-40 -40 -7.0
-35 -31 -3.5
-30 -22 0.5
-25 -13 5.0
-20 -4 10.2
-15 5 16.0
-10 14 22.6
-5 23 29.9
0 32 38.1
5 41 47.1
10 50 57.1
15 59 68.1
20 68 80.2
25 77 93.4
30 86 107.8
35 95 123.5
40 104 140.5
45 113 158.9
50 122 178.8
55 131 200.3
60 140 223.4
65 149 248.2
70 158 274.8
75 167 303.2
80 176 333.5