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

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 0.4
-45 -49 0.5
-40 -40 0.5
-35 -31 0.8
-30 -22 1.0
-25 -13 1.4
-20 -4 1.7
-15 5 2.1
-10 14 2.6
-5 23 3.1
0 32 3.6
5 41 4.3
10 50 5.0
15 59 5.7
20 68 6.5
25 77 7.5
30 86 8.4
35 95 9.5
40 104 10.7
45 113 12.0
50 122 13.3
55 131 14.8
60 140 16.4
65 149 18.1
70 158 20.0
75 167 21.9
80 176 24.0