# R134A PT Chart: Pressure Temperature Chart (-49°F To 150°F)

R134A PT chart is a standard table. Basically, this 134A PT chart tells you what is the pressure of R134A refrigerant at certain temperatures. The charts start at the low end (-49°F) and tell you the pressures all the way to the high end (150°F).

Example: What is the pressure of 134A freon at 85°F? You just chart the chart (found below) and you will see that at 85°F, the pressure of R134A is 95.2 psig (pounds per square inch gauge).

The pressures in the PT chart are expressed in psig or gauge pressure. That’s very practical; we always use a pressure gauge meter when measuring the pressure in refrigerant lines.

Note: R134A is chemically named 1,1,1,2-Tetrafluoroethane. For on-site use, we include a printable R134A PT chart in PDF form at the end of the article.

To help everybody out, we have explained some examples about what is the 134A pressure on 75°F, 80°F, 90°F, and 100°F days below the PT chart for R134A. It’s quite useful to check that out if you find the chart a bit confusing.

Here is the full R134A PT table:

## 134A Pressure Temperature Chart

 Temperature (°F): Temperature (°C): Pressure (psig): -49°F -45.0°C 18.4 psig -48°F -44.4°C 18.0 psig -47°F -43.9°C 17.6 psig -46°F -43.3°C 17.3 psig -45°F -42.8°C 16.9 psig -44°F -42.2°C 16.5 psig -43°F -41.7°C 16.1 psig -42°F -41.1°C 15.7 psig -41°F -40.6°C 15.2 psig -40°F -40.0°C 14.8 psig -39°F -39.4°C 14.4 psig -38°F -38.9°C 13.9 psig -37°F -38.3°C 13.4 psig -36°F -37.8°C 13.0 psig -35°F -37.2°C 12.5 psig -34°F -36.7°C 12.0 psig -33°F -36.1°C 11.4 psig -32°F -35.6°C 10.9 psig -31°F -35.0°C 10.4 psig -30°F -34.4°C 9.8 psig -29°F -33.9°C 9.3 psig -28°F -33.3°C 8.7 psig -27°F -32.8°C 8.1 psig -26°F -32.2°C 7.5 psig -25°F -31.7°C 6.9 psig -24°F -31.1°C 6.3 psig -23°F -30.6°C 5.7 psig -22°F -30.0°C 5.0 psig -21°F -29.4°C 4.3 psig -20°F -28.9°C 3.7 psig -19°F -28.3°C 3.0 psig -18°F -27.8°C 2.3 psig -17°F -27.2°C 1.5 psig -16°F -26.7°C 0.8 psig -15°F -26.1°C 0.1 psig -14°F -25.6°C 0.4 psig -13°F -25.0°C 0.7 psig -12°F -24.4°C 1.1 psig -11°F -23.9°C 1.5 psig -10°F -23.3°C 1.9 psig -9°F -22.8°C 2.4 psig -8°F -22.2°C 2.8 psig -7°F -21.7°C 3.2 psig -6°F -21.1°C 3.6 psig -5°F -20.6°C 4.1 psig -4°F -20.0°C 4.6 psig -3°F -19.4°C 5.0 psig -2°F -18.9°C 5.5 psig -1°F -18.3°C 6.0 psig 0°F -17.8°C 6.5 psig 1°F -17.2°C 7.0 psig 2°F -16.7°C 7.5 psig 3°F -16.1°C 8.0 psig 4°F -15.6°C 8.5 psig 5°F -15.0°C 9.1 psig 6°F -14.4°C 9.6 psig 7°F -13.9°C 10.2 psig 8°F -13.3°C 10.8 psig 9°F -12.8°C 11.3 psig 10°F -12.2°C 11.9 psig 11°F -11.7°C 12.5 psig 12°F -11.1°C 13.1 psig 13°F -10.6°C 13.8 psig 14°F -10.0°C 14.4 psig 15°F -9.4°C 15.0 psig 16°F -8.9°C 15.7 psig 17°F -8.3°C 16.4 psig 18°F -7.8°C 17.0 psig 19°F -7.2°C 17.7 psig 20°F -6.7°C 18.4 psig 21°F -6.1°C 19.1 psig 22°F -5.6°C 19.9 psig 23°F -5.0°C 20.6 psig 24°F -4.4°C 21.3 psig 25°F -3.9°C 22.1 psig 26°F -3.3°C 22.9 psig 27°F -2.8°C 23.7 psig 28°F -2.2°C 24.5 psig 29°F -1.7°C 25.3 psig 30°F -1.1°C 26.1 psig 31°F -0.6°C 26.9 psig 32°F 0°C 27.8 psig 33°F 0.6°C 28.6 psig 34°F 1.1°C 29.5 psig 35°F 1.7°C 30.4 psig 36°F 2.2°C 31.3 psig 37°F 2.8°C 32.2 psig 38°F 3.3°C 33.1 psig 39°F 3.9°C 34.1 psig 40°F 4.4°C 35.0 psig 41°F 5.0°C 36.0 psig 42°F 5.6°C 37.0 psig 43°F 6.1°C 38.0 psig 44°F 6.7°C 39.0 psig 45°F 7.2°C 40.1 psig 46°F 7.8°C 41.1 psig 47°F 8.3°C 42.2 psig 48°F 8.9°C 43.2 psig 49°F 9.4°C 44.3 psig 50°F 10.0°C 45.4 psig 51°F 10.6°C 46.6 psig 52°F 11.1°C 47.7 psig 53°F 11.7°C 48.9 psig 54°F 12.2°C 50.0 psig 55°F 12.8°C 51.2 psig 56°F 13.3°C 52.4 psig 57°F 13.9°C 53.6 psig 58°F 14.4°C 54.9 psig 59°F 15.0°C 56.1 psig 60°F 15.6°C 57.4 psig 61°F 16.1°C 58.7 psig 62°F 16.7°C 60.0 psig 63°F 17.2°C 61.3 psig 64°F 17.8°C 62.7 psig 65°F 18.3°C 64.0 psig 66°F 18.9°C 65.4 psig 67°F 19.4°C 66.8 psig 68°F 20.0°C 68.2 psig 69°F 20.6°C 69.7 psig 70°F 21.1°C 71.1 psig 71°F 21.7°C 72.6 psig 72°F 22.2°C 74.1 psig 73°F 22.8°C 75.6 psig 74°F 23.3°C 77.1 psig 75°F 23.9°C 78.7 psig 76°F 24.4°C 80.2 psig 77°F 25.0°C 81.8 psig 78°F 25.6°C 83.4 psig 79°F 26.1°C 85.0 psig 80°F 26.7°C 86.7 psig 81°F 27.2°C 88.4 psig 82°F 27.8°C 90.0 psig 83°F 28.3°C 91.8 psig 84°F 29.4°C 93.5 psig 85°F 30.0°C 95.2 psig 86°F 30.6°C 97.0 psig 87°F 31.1°C 98.8 psig 88°F 31.7°C 100.6 psig 89°F 31.7°C 102.5 psig 90°F 32.2°C 104.3 psig 91°F 32.8°C 106.2 psig 92°F 33.3°C 108.1 psig 93°F 33.9°C 110.0 psig 94°F 34.4°C 112.0 psig 95°F 35.0°C 114.0 psig 96°F 35.6°C 115.9 psig 97°F 36.1°C 118.0 psig 98°F 36.7°C 120.0 psig 99°F 37.2°C 122.1 psig 100°F 37.8°C 124.2 psig 105°F 40.6°C 135.0 psig 110°F 43.3°C 146.4 psig 115°F 46.1°C 158.4 psig 120°F 48.9°C 171.2 psig 125°F 51.7°C 184.6 psig 130°F 54.4°C 198.7 psig 135°F 57.2°C 213.6 psig 140°F 60.0°C 229.2 psig 145°F 62.8°C 245.7 psig 150°F 65.6°C 262.9 psig

Here are some examples of how to read this chart:

### What Is The Pressure Of R134A On 75 Degree Day?

You simply check the table above and see that the pressure of R134A on a 75-degree day is 78.7 psig.

### What Is The Pressure Of R134A On 80 Degree Day?

You simply check the table above and see that the pressure of R134A on a 80-degree day is 86.7 psig.

### What Is The Pressure Of R134A On 90 Degree Day?

You simply check the table above and see that the pressure of R134A on a 90-degree day is 104.3 psig.

### What Is The Pressure Of R134A On 100 Degree Day?

You simply check the table above and see that the pressure of R134A on a 100-degree day is 124.2 psig.

### R134A PT Chart PDF (Printable PDF For On-Site Use)

As promised, you can get the printable PDF version of the R134A PT chart here if you need it on-site:

All in all, you can now figure out what psi pressure does a 134A refrigerant have at all temperatures. You can check similar tables for:

### 1 thought on “R134A PT Chart: Pressure Temperature Chart (-49°F To 150°F)”

1. Thank you for this chart. So that I can fallow the standard pressure for every temperature that I need. For repairing any kind of refrigeration using 134a prion.