# R454B PT Chart: Pressures At -40°F To 150°F Temperatures

R454B refrigerant pressure chart tells you what are pressures of R454B at -40°F to 150°F temperatures. If you know the temperature, you can use the R454B PT chart to determine the pressure. If you know the pressure of R454B (between 8.8 psig and 581.4 psig), you can also use the chart to determine the temperature of the refrigerant.

You will find two useful resources here, namely:

• Online R454B pressure temperature chart spanning from -40°F to 150°F temp.
• Printable PDF version of R454B PT chart you can take with you on the job.

There are several brand names for R454B: Opteon XL41, Solstice 454B, and Puron Advance. This is a blend of R32 (68.9%) and R1234yf (31.1%). It has a very low boiling point of -59.5°F (-50.9°C). That’s why is primarily used in air conditioners. Note: Due to very low boiling point, pressures of liquid R454B refrigerant exceeds 300 psig on 100-degree days.

You can use the R454B refrigerant PT chart for:

• Checking operating pressures of R454B.
• Check what pressures should R454B have on 65-degree, 70-degree, 75-degree, 80-degree, 85-degree, 90-degree, 95-degree, 100-degree days, and so on. We will solve 8 examples for 65-100 degree days to illustrate how to use the PT chart.
• Figure out if the AC line set or a reusable freon bottle contains R454B  refrigerant.
• Differentiate between R454B and other refrigerants, like R22, R410a, and so on.
• Use it to calculate the required R454B superheat and total superheat. For superheat, you will need to know R454B vapor pressures (3rd column in the chart).
• Use it to calculate the required R454B subcooling. For subcooling, you will need to use the R454B liquid pressure (4th column in the chart).

Note: When measuring pressures, the R454B refrigerant has to be in a saturated state (mixture of liquid and vapor). That’s why you have to turn the air conditioner off and wait for the refrigerant to equalize. That means that the pressure of R454B is the same on the high side and low side. When measuring pressures on a running AC unit, be aware that the saturated state only exists at the evaporator and condenser (compressor contains vapor, TXV valve contains liquid).

With this in mind, let’s have a look at the R454B PT chart and the 8 temperature examples (at the end you will also find a printable PDF version):

## 454B Pressure Temperature Chart

 Temperature (°F): Temperature (°C): R454B Liquid Pressure (psig): R454B Vapor Pressure (psig): -40°F -40.0°C 9.9 psig 8.8 psig -39°F -39.4°C 10.4 psig 9.4 psig -38°F -38.9°C 11.2 psig 10.0 psig -37°F -38.3°C 11.8 psig 10.6 psig -36°F -37.8°C 12.5 psig 11.2 psig -35°F -37.2°C 13.2 psig 11.9 psig -34°F -36.7°C 13.8 psig 12.5 psig -33°F -36.1°C 15.4 psig 13.2 psig -32°F -35.6°C 15.3 psig 13.9 psig -31°F -35.0°C 16.0 psig 14.6 psig -30°F -34.4°C 16.7 psig 15.3 psig -29°F -33.9°C 17.5 psig 16.0 psig -28°F -33.3°C 18.2  psig 16.7  psig -27°F -32.8°C 19.0 psig 17.5 psig -26°F -32.2°C 19.8 psig 18.2 psig -25°F -31.7°C 20.6 psig 19.0 psig -24°F -31.1°C 21.4 psig 19.8 psig -23°F -30.6°C 22.3 psig 20.6 psig -22°F -30.0°C 23.1 psig 21.4 psig -21°F -29.4°C 24.0 psig 22.2 psig -20°F -28.9°C 24.9 psig 23.0 psig -19°F -28.3°C 25.8 psig 23.9 psig -18°F -27.8°C 26.7 psig 24.8 psig -17°F -27.2°C 27.6 psig 25.7 psig -16°F -26.7°C 28.6 psig 26.6 psig -15°F -26.1°C 29.5 psig 27.5 psig -14°F -25.6°C 30.5 psig 28.4 psig -13°F -25.0°C 31.5 psig 29.4 psig -12°F -24.4°C 32.5 psig 30.3 psig -11°F -23.9°C 33.5 psig 31.3 psig -10°F -23.3°C 34.6 psig 32.3 psig -9°F -22.8°C 35.7 psig 33.3 psig -8°F -22.2°C 36.7 psig 34.4 psig -7°F -21.7°C 37.8 psig 35.4 psig -6°F -21.1°C 39.0 psig 36.5 psig -5°F -20.6°C 40.1 psig 37.6 psig -4°F -20.0°C 41.2 psig 38.7 psig -3°F -19.4°C 42.4 psig 39.8 psig -2°F -18.9°C 43.6 psig 40.9 psig -1°F -18.3°C 44.8 psig 42.1 psig 0°F -17.8°C 46.1 psig 43.3 psig 1°F -17.2°C 47.3 psig 44.5 psig 2°F -16.7°C 48.6 psig 45.7 psig 3°F -16.1°C 49.9 psig 46.9 psig 4°F -15.6°C 51.2 psig 48.1 psig 5°F -15.0°C 52.5 psig 49.4 psig 6°F -14.4°C 53.8 psig 50.7 psig 7°F -13.9°C 55.2 psig 52.0 psig 8°F -13.3°C 56.6 psig 53.3 psig 9°F -12.8°C 58.0 psig 54.7 psig 10°F -12.2°C 59.5 psig 56.1 psig 11°F -11.7°C 60.9 psig 57.5 psig 12°F -11.1°C 62.4 psig 58.9 psig 13°F -10.6°C 63.9 psig 60.3 psig 14°F -10.0°C 65.4 psig 61.8 psig 15°F -9.4°C 66.9 psig 63.2 psig 16°F -8.9°C 68.5 psig 64.7 psig 17°F -8.3°C 70.1 psig 66.2 psig 18°F -7.8°C 71.7 psig 67.8 psig 19°F -7.2°C 73.3 psig 69.3 psig 20°F -6.7°C 75.0 psig 70.9 psig 21°F -6.1°C 76.7 psig 72.5 psig 22°F -5.6°C 78.4 psig 74.2 psig 23°F -5.0°C 80.1 psig 75.8 psig 24°F -4.4°C 81.8 psig 77.5 psig 25°F -3.9°C 83.6 psig 79.2 psig 26°F -3.3°C 85.4 psig 80.9 psig 27°F -2.8°C 87.2 psig 82.7 psig 28°F -2.2°C 89.1 psig 84.4 psig 29°F -1.7°C 91.0 psig 86.2 psig 30°F -1.1°C 92.9 psig 88.1 psig 31°F -0.6°C 94.8 psig 89.9 psig 32°F 0°C 96.8 psig 91.8 psig 33°F 0.6°C 98.7 psig 93.7 psig 34°F 1.1°C 100.7 psig 95.6 psig 35°F 1.7°C 102.8 psig 97.6 psig 36°F 2.2°C 104.8 psig 99.5 psig 37°F 2.8°C 106.9 psig 101.5 psig 38°F 3.3°C 109.0 psig 103.6 psig 39°F 3.9°C 111.2 psig 105.6 psig 40°F 4.4°C 113.3 psig 107.7 psig 41°F 5.0°C 115.5 psig 109.8 psig 42°F 5.6°C 117.8 psig 112.0 psig 43°F 6.1°C 120.0 psig 114.1 psig 44°F 6.7°C 122.3 psig 116.3 psig 45°F 7.2°C 124.6 psig 118.5 psig 46°F 7.8°C 126.9 psig 120.8 psig 47°F 8.3°C 129.3 psig 123.1 psig 48°F 8.9°C 131.7 psig 125.4 psig 49°F 9.4°C 134.1 psig 127.7 psig 50°F 10.0°C 136.6 psig 130.1 psig 51°F 10.6°C 139.1 psig 132.5 psig 52°F 11.1°C 141.6 psig 134.9 psig 53°F 11.7°C 144.2 psig 137.3 psig 54°F 12.2°C 146.7 psig 139.8 psig 55°F 12.8°C 149.4 psig 142.3 psig 56°F 13.3°C 152.0 psig 144.9 psig 57°F 13.9°C 154.7 psig 147.5 psig 58°F 14.4°C 157.4 psig 150.1 psig 59°F 15.0°C 160.1 psig 152.7 psig 60°F 15.6°C 162.9 psig 155.4 psig 61°F 16.1°C 165.7 psig 158.1 psig 62°F 16.7°C 168.6 psig 160.8 psig 63°F 17.2°C 171.4 psig 163.6 psig 64°F 17.8°C 174.3 psig 166.4 psig 65°F 18.3°C 177.3 psig 169.3 psig 66°F 18.9°C 180.2 psig 172.1 psig 67°F 19.4°C 183.2 psig 175.1 psig 68°F 20.0°C 186.3 psig 178.0 psig 69°F 20.6°C 189.4 psig 181.0 psig 70°F 21.1°C 192.5 psig 184.0 psig 71°F 21.7°C 195.6 psig 187.0 psig 72°F 22.2°C 198.8 psig 190.1 psig 73°F 22.8°C 202.0 psig 193.2 psig 74°F 23.3°C 205.3 psig 196.4 psig 75°F 23.9°C 208.6 psig 199.6 psig 76°F 24.4°C 211.9 psig 202.8 psig 77°F 25.0°C 215.3 psig 206.0 psig 78°F 25.6°C 218.7 psig 209.3 psig 79°F 26.1°C 222.1 psig 212.7 psig 80°F 26.7°C 225.6 psig 216.1 psig 81°F 27.2°C 229.1 psig 219.5 psig 82°F 27.8°C 232.7 psig 222.9 psig 83°F 28.3°C 236.3 psig 226.4 psig 84°F 29.4°C 239.9 psig 229.9 psig 85°F 30.0°C 243.6 psig 233.5 psig 86°F 30.6°C 247.3 psig 237.1 psig 87°F 31.1°C 251.0 psig 240.8 psig 88°F 31.7°C 254.8 psig 244.4 psig 89°F 31.7°C 258.7 psig 248.2 psig 90°F 32.2°C 262.5 psig 251.9 psig 91°F 32.8°C 266.4 psig 255.7 psig 92°F 33.3°C 270.4 psig 259.6 psig 93°F 33.9°C 274.4 psig 263.5 psig 94°F 34.4°C 278.4 psig 267.4 psig 95°F 35.0°C 282.5 psig 271.4 psig 96°F 35.6°C 286.6 psig 275.4 psig 97°F 36.1°C 290.8 psig 279.5 psig 98°F 36.7°C 295.0 psig 283.6 psig 99°F 37.2°C 299.2 psig 287.8 psig 100°F 37.8°C 303.6 psig 291.6 psig 105°F 40.6°C 325.7 psig 313.6 psig 110°F 43.3°C 348.9 psig 336.4 psig 115°F 46.1°C 373.4 psig 360.5 psig 120°F 48.9°C 399.1 psig 385.8 psig 125°F 51.7°C 426.0 psig 412.4 psig 130°F 54.4°C 454.2 psig 440.5 psig 135°F 57.2°C 483.8 psig 470.0 psig 140°F 60.0°C 514.9 psig 501.0 psig 145°F 62.8°C 547.3 psig 533.7 psig 150°F 65.6°C 581.4 psig 568.2 psig

This chart contains all R454B operating pressures at different temperatures. If we presume that the outdoor temperature around the line set is stable, the refrigerant will also have that same temperature. We can use the PT chart to tell how what are the pressures of R454B refrigerant on hotter and colder days like this:

### Example 1: What Are R454B Pressures On A 65-Degree Day?

From the PT chart, we can read that the pressure of liquid R454B on a 65-degree day is 177.3 psig.

Similarly, we can see that the vapor pressure of R454B on a 65-degree is 169.3 psig.

### Example 2: What Are R454B Pressures On A 70-Degree Day?

From the PT chart, we can read that the pressure of liquid R454B on a 70-degree day is 192.5 psig.

Similarly, we can see that the vapor pressure of R454B on a 70-degree is 184.0 psig.

### Example 3: What Are R454B Pressures On A 75-Degree Day?

From the PT chart, we can read that the pressure of liquid R454B on a 75-degree day is 208.6 psig.

Similarly, we can see that the vapor pressure of R454B on a 75-degree is 199.6 psig.

### Example 4: What Are R454B Pressures On A 80-Degree Day?

From the PT chart, we can read that the pressure of liquid 4R454B on an 80-degree day is 225.6 psig.

Similarly, we can see that the vapor pressure of R454B on an 80-degree is 216.1 psig.

### Example 5: What Are R454B Pressures On A 85-Degree Day?

From the PT chart, we can read that the pressure of liquid R454B on an 85-degree day is 243.6 psig.

Similarly, we can see that the vapor pressure of R454B on an 85-degree is 233.5 psig.

### Example 6: What Are R454B Pressures On A 90-Degree Day?

From the PT chart, we can read that the pressure of liquid R454B on a 90-degree day is 262.5 psig.

Similarly, we can see that the vapor pressure of R454B on a 90-degree is 251.9 psig.

### Example 7: What Are R454B Pressures On A 95-Degree Day?

From the PT chart, we can read that the pressure of liquid R454B on a 95-degree day is 282.5 psig.

Similarly, we can see that the vapor pressure of R454B on a 95-degree is 271.4 psig.

### Example 8: What Are R454B Pressures On A 100-Degree Day?

From the PT chart, we can read that the pressure of liquid R454B on a 100-degree day is 303.6 psig.

Similarly, we can see that the vapor pressure of R454B on a 100-degree is 291.6 psig.

## R454B Pressure Temperature Chart PDF

As promised, you can get the printable PDF version of the R454B PT chart here if you need it on-site. Here is the full chart you can freely download and take with you:

With this printable PT chart, we hope that you will be able to use an R454B chart without any problems.