Pressure Chart

RefrigerantHQ's Pressure Charts

The HFO R-1234yf is the refrigerant of the future. Or, at least, that is how it has been marketed. Yf was the first HFO refrigerant to see mainstream attention. A few years back there was immense pressure in the European Union to stop using the HFC R-134a for automotive air conditioning. The pressure was there due to the extremely high Global Warming Potential (GWP) that R-134a has. R-134a has a GWP of one-thousand four-hundred and thirty. It is classified as a super pollutant.

The answer to the world’s problems came with the announcement of the new HFO refrigerant known as R-1234yf. Yf refrigerant has a Global Warming Potential of only four. That is a huge difference when comparing it to other refrigerants on the market today. The only downside for yf is that it is rated as slightly flammable or 2L from ASHRAE and other air conditioning organizations.

The European Union quickly phased down and out R-134a and had their new vehicles start taking R-1234yf. While the acceptance of yf is much slower here in the United States there are numerous vehicle manufacturers who have begun using this refrigerant in their newer model vehicles. With each year that passes more and more vehicles begin taking yf.

To read more about 1234yf please click here to be taken to our official refrigerant fact sheet on yf.

1234yf Pressure Chart

One of the very first steps when it comes to diagnosing a vehicle’s air conditioner is understanding the temperature and the current pressure that your system is operating at. Having these facts along with the saturation point, the subcool, and the superheat  numbers for the refrigerant you are working on are essential when it comes to really understanding what is going wrong with your system.

The chart below details the pressures and the saturation point, or boiling point, R-1234yf:

°F °C PSI KPA
-94 -70 -9.82 -67.7
-90.4 -68 -9.26 -63.8
-86.8 -66 -8.65 -59.6
-83.2 -64 -7.99 -55.1
-79.6 -62 -7.27 -50.1
-76 -60 -6.49 -44.7
-72.4 -58 -5.65 -39.0
-68.8 -56 -4.73 -32.6
-65.2 -54 -3.75 -25.9
-61.6 -52 -2.69 -18.5
-58 -50 -1.55 -10.7
-54.4 -48 -0.33 -2.3
-50.8 -46 0.99 6.8
-47.2 -44 2.39 16.5
-43.6 -42 3.89 26.8
-40 -40 5.49 37.9
-36.4 -38 7.19 49.6
-32.8 -36 9.01 62.1
-29.2 -34 10.94 75.4
-25.6 -32 12.99 89.6
-22 -30 15.17 104.6
-18.4 -28 17.47 120.5
-14.8 -26 19.91 137.3
-11.2 -24 22.49 155.1
-7.6 -22 25.21 173.8
-4 -20 28.08 193.6
-0.4 -18 31.11 214.5
3.2 -16 34.29 236.4
6.8 -14 37.64 259.5
10.4 -12 41.17 283.9
14 -10 44.87 309.4
17.6 -8 48.75 336.1
21.2 -6 52.82 364.2
24.8 -4 57.09 393.6
28.4 -2 61.56 424.4
32 0 66.23 456.6
35.6 2 71.11 490.3
39.2 4 76.21 525.4
42.8 6 81.54 562.2
46.4 8 87.09 600.5
50 10 92.89 640.5
53.6 12 98.92 682.0
57.2 14 105.21 725.4
60.8 16 111.75 770.5
64.4 18 118.55 817.4
68 20 125.63 866.2
71.6 22 132.98 916.9
75.2 24 140.62 969.5
78.8 26 148.54 1024.1
82.4 28 156.77 1080.9
86 30 165.3 1139.7
89.6 32 174.15 1200.7
93.2 34 183.32 1263.9
96.8 36 192.82 1329.4
100.4 38 202.65 1397.2
104 40 212.85 1467.5
107.6 42 223.39 1540.2
111.2 44 234.29 1615.4
114.8 46 245.57 1693.1
118.4 48 257.24 1773.6
122 50 269.31 1856.8
125.6 52 281.76 1942.7
129.2 54 94.75 653.3
132.8 56 100.09 690.1
136.4 58 105.62 728.2
140 60 111.34 767.7
143.6 62 117.26 808.5
147.2 64 123.38 850.7
150.8 66 129.71 894.3
154.4 68 136.26 939.5
158 70 143 986.0

 

Conclusion

There you have it folks. I hope this article was helpful and if you find that something is inaccurate here in my chart please do not hesitate to reach out to me. I have sourced this the best I could but there is always going to be conflicting data.  I’ve seen it multiple times on various refrigerants. I’ll search for a refrigerant’s pressure chart and get various results all showing different pounds per square inch temperatures.

The aim with this article is to give you accurate information so again, if you see anything incorrect please let me know by contacting me here. On top of this post we are also working on a comprehensive refrigerant pressure/temperature listing. The goal is to have every refrigerant out there listed with a pressure/temperature chart that is easily available. 

Thanks for reading,

Alec Johnson

RefrigerantHQ

Owner

RefrigerantHQ's Pressure Charts

One of the very first steps when it comes to diagnosing your home air conditioner, refrigerator, or even your vehicle’s air conditioner is understanding the temperature and the current pressure that your system is operating at. Having these facts along with the saturation point, the subcool, and the superheat  numbers for the refrigerant you are working on are essential when it comes to really understanding what is going wrong with your system.

After a visual inspection the very next step for the most seasoned technicians is pulling out their gauges and checking the pressure and temperature. It just becomes second nature after enough calls. I have heard stories of rookie techs calling some of the pros on their team for help on a system that they’re stuck on. It doesn’t matter what the situation is. It doesn’t matter if you’re in Miami or in Fargo. It will never fail that one of the first questions the pros ask the rookie is what is your subcool and what is your superheat? Having  and understanding these numbers is key to figuring out what to do next.

But, these numbers won’t do you any good if you don’t know what refrigerant you are dealing with and what the refrigerant’s boiling point is at each pressure level. This article aims at providing you with just that information.

R-32 Pressure Chart

The HFC R-32 refrigerant is quickly becoming popular, more so then it already was. Most of you know R-32 as a necessary component in the widely popular HFC blend known as R-410A Puron. R-32 along with R-125 gets you that R-410A that is found in nearly every air conditioner today.

However, in recent years there has been a push to slowly phase down R-410A. That is because of 410A’s very high Global Warming Potential, or GWP. The higher the GWP the more harm the refrigerant does to the climate. R-410A has a GWP of over two-thousand whereas R-32 has a GWP of only six-hundred and seventy-five.

While R-32 isn’t perfect it is a lot better then R-410A. That is why we are beginning to see a rise of usage of R-32 in the European Union and here in the United States as well. I do not foresee this becoming a long term trend but only as a temporary place holder until the world finds a more suitable R-410A replacement.

If you would like to read more about R-32 refrigerant please click here to be taken to our refrigerant fact sheet.

Let’s take a look at our pressure chart:

°F °C PSI KPA
-94 -70 -9.46 -65.2
-90.4 -68 -8.77 -60.5
-86.8 -66 -8.02 -55.3
-83.2 -64 -7.19 -49.6
-79.6 -62 -6.27 -43.2
-76 -60 -5.27 -36.3
-72.4 -58 -4.17 -28.8
-68.8 -56 -2.98 -20.5
-65.2 -54 -1.67 -11.5
-61.6 -52 -0.26 -1.8
-58 -50 1.28 8.8
-54.4 -48 2.95 20.3
-50.8 -46 4.75 32.8
-47.2 -44 6.69 46.1
-43.6 -42 8.78 60.5
-40 -40 11.04 76.1
-36.4 -38 13.45 92.7
-32.8 -36 16.05 110.7
-29.2 -34 18.82 129.8
-25.6 -32 21.79 150.2
-22 -30 24.96 172.1
-18.4 -28 28.34 195.4
-14.8 -26 31.94 220.2
-11.2 -24 35.77 246.6
-7.6 -22 39.83 274.6
-4 -20 44.15 304.4
-0.4 -18 48.72 335.9
3.2 -16 53.56 369.3
6.8 -14 58.68 404.6
10.4 -12 64.09 441.9
14 -10 69.79 481.2
17.6 -8 75.81 522.7
21.2 -6 82.15 566.4
24.8 -4 88.82 612.4
28.4 -2 95.84 660.8
32 0 103.21 711.6
35.6 2 110.95 765.0
39.2 4 119.07 821.0
42.8 6 127.58 879.6
46.4 8 136.49 941.1
50 10 145.81 1005.3
53.6 12 155.57 1072.6
57.2 14 165.76 1142.9
60.8 16 176.41 1216.3
64.4 18 187.53 1293.0
68 20 199.13 1373.0
71.6 22 211.21 1456.2
75.2 24 223.81 1543.1
78.8 26 236.93 1633.6
82.4 28 250.59 1727.8
86 30 264.8 1825.7
89.6 32 279.57 1927.6
93.2 34 294.93 2033.5
96.8 36 310.89 2143.5
100.4 38 327.47 2257.8
104 40 344.67 2376.4
107.6 42 362.51 2499.4
111.2 44 381.05 2627.2
114.8 46 400.24 2759.6
118.4 48 420.15 2896.8
122 50 440.79 3039.1
125.6 52 462.17 3186.6
129.2 54 484.33 3339.3
132.8 56 507.27 3497.5
136.4 58 531.02 3661.3
140 60 555.63 3830.9
143.6 62 581.1 4006.5
147.2 64 607.49 4188.5
150.8 66 634.81 4376.9
154.4 68 663.11 4572.0
158 70 692.45 4774.3

Conclusion

There you have it folks. I hope this article was helpful and if you find that something is inaccurate here in my chart please do not hesitate to reach out to me. I have sourced this the best I could but there is always going to be conflicting data.  I’ve seen it multiple times on various refrigerants. I’ll search for a refrigerant’s pressure chart and get various results all showing different pounds per square inch temperatures.

The aim with this article is to give you accurate information so again, if you see anything incorrect please let me know by contacting me here. On top of this post we are also working on a comprehensive refrigerant pressure/temperature listing. The goal is to have every refrigerant out there listed with a pressure/temperature chart that is easily available. 

Thanks for reading,

Alec Johnson

RefrigerantHQ

Owner

RefrigerantHQ's Pressure Charts

One of the very first steps when it comes to diagnosing your home air conditioner, refrigerator, or even your vehicle’s air conditioner is understanding the temperature and the current pressure that your system is operating at. Having these facts along with the saturation point, the subcool, and the superheat  numbers for the refrigerant you are working on are essential when it comes to really understanding what is going wrong with your system.

After a visual inspection the very next step for the most seasoned technicians is pulling out their gauges and checking the pressure and temperature. It just becomes second nature after enough calls. I have heard stories of rookie techs calling some of the pros on their team for help on a system that they’re stuck on. It doesn’t matter what the situation is. It doesn’t matter if you’re in Miami or in Fargo. It will never fail that one of the first questions the pros ask the rookie is what is your subcool and what is your superheat? Having  and understanding these numbers is key to figuring out what to do next.

But, these numbers won’t do you any good if you don’t know what refrigerant you are dealing with and what the refrigerant’s boiling point is at each pressure level. This article aims at providing you with just that information.

R-22 Pressure Chart

R-22 refrigerant is the major refrigerant, or… it was. R-22 was invented by a partnership with General Motors and DuPont back in the 1930’s. In the 1950’s the use of R-22 exploded and for nearly sixty years it was THE refrigerant to be used in home, office, and commercial air conditioning. Along with air conditioning it was also used in chillers, ice rinks, and many other applications.

It was in the 1980’s that it was discovered that R-22 was damaging the Ozone layer with the chlorine that it contained. In order to correct this R-22 was phased out across the world. Here in America our phase out began in 2010 and the refrigerant will be completely phased out in 2020. Taking R-22’s place is the HFC refrigerant blend known as R-410A, our Puron.

As I write this article, in 2019, there are still thousands of R-22 machines out there, but they are a dying breed and within the next ten to twenty years R-22 will be as rare to find as R-12 is today.

If you would like to read more about R-22 Freon  refrigerant please click here to be taken to our refrigerant fact sheet.

Let’s take a look at our pressure chart:

°F °C PSI KPA
-40 -40.0 0.5 3.4
-35 -37.2 2.6 17.9
-30 -34.4 4.9 33.8
-25 -31.7 7.4 51.0
-20 -28.9 10.1 69.6
-15 -26.1 13.2 91.0
-10 -23.3 16.5 113.8
-5 -20.6 20.1 138.6
0 -17.8 24 165.5
5 -15.0 28.2 194.4
10 -12.2 32.8 226.1
15 -9.4 37.7 259.9
20 -6.7 43 296.5
25 -3.9 48.8 336.5
30 -1.1 54.9 378.5
35 1.7 61.5 424.0
40 4.4 68.5 472.3
45 7.2 76 524.0
50 10.0 84 579.2
55 12.8 92.6 638.5
60 15.6 102 703.3
65 18.3 111 765.3
70 21.1 121 834.3
75 23.9 132 910.1
80 26.7 144 992.8
85 29.4 156 1075.6
90 32.2 168 1158.3
95 35.0 182 1254.8
100 37.8 196 1351.4
105 40.6 211 1454.8
110 43.3 226 1558.2
115 46.1 243 1675.4
120 48.9 260 1792.6
125 51.7 278 1916.7
130 54.4 297 2047.7
135 57.2 317 2185.6
140 60.0 337 2323.5
145 62.8 359 2475.2
150 65.6 382 2633.8

Conclusion

There you have it folks. I hope this article was helpful and if you find that something is inaccurate here in my chart please do not hesitate to reach out to me. I have sourced this the best I could but there is always going to be conflicting data.  I’ve seen it multiple times on various refrigerants. I’ll search for a refrigerant’s pressure chart and get various results all showing different pounds per square inch temperatures.

The aim with this article is to give you accurate information so again, if you see anything incorrect please let me know by contacting me here. On top of this post we are also working on a comprehensive refrigerant pressure/temperature listing. The goal is to have every refrigerant out there listed with a pressure/temperature chart that is easily available. 

Thanks for reading,

Alec Johnson

RefrigerantHQ

Owner

RefrigerantHQ's Pressure Charts

One of the very first steps when it comes to diagnosing your home air conditioner, refrigerator, or even your vehicle’s air conditioner is understanding the temperature and the current pressure that your system is operating at. Having these facts along with the saturation point, the subcool, and the superheat  numbers for the refrigerant you are working on are essential when it comes to really understanding what is going wrong with your system.

After a visual inspection the very next step for the most seasoned technicians is pulling out their gauges and checking the pressure and temperature. It just becomes second nature after enough calls. I have heard stories of rookie techs calling some of the pros on their team for help on a system that they’re stuck on. It doesn’t matter what the situation is. It doesn’t matter if you’re in Miami or in Fargo. It will never fail that one of the first questions the pros ask the rookie is what is your subcool and what is your superheat? Having  and understanding these numbers is key to figuring out what to do next.

But, these numbers won’t do you any good if you don’t know what refrigerant you are dealing with and what the refrigerant’s boiling point is at each pressure level. This article aims at providing you with just that information.

R-404A Pressure Chart

R-404A rose to prominence in the late 1990’s with the phasing out of CFC and HCFC refrigerants like R-12 and R-502. There had to be a replacement for the Ozone damaging refrigerants of the past and the successor was the HFC R-404A that we all know of today.

404A’s reign however was short lived. R-404A has one of the highest Global Warming Potential numbers of any modern day refrigerant and is known as a super pollutant. Because of this we are seeing various countries and manufacturers no longer using R-404A in new machinery. Instead, companies and countries are opting for more climate friendly refrigerants such as natural refrigerants, hydrocarbons, and newer less GWP heavy HFO refrigerants

If you would like to read more about R-404A  refrigerant please click here to be taken to our refrigerant fact sheet.

Let’s take a look at our pressure chart:

°F °C PSI KPA
-40 -40.0 4.3 29.6
-35 -37.2 6.8 46.9
-30 -34.4 9.5 65.5
-25 -31.7 12.5 86.2
-20 -28.9 15.7 108.2
-15 -26.1 19.3 133.1
-10 -23.3 23.2 160.0
-5 -20.6 27.5 189.6
0 -17.8 32.1 221.3
5 -15.0 37 255.1
10 -12.2 42.4 292.3
15 -9.4 48.2 332.3
20 -6.7 54.5 375.8
25 -3.9 61.2 422.0
30 -1.1 68.4 471.6
35 1.7 76.1 524.7
40 4.4 84.4 581.9
45 7.2 93.2 642.6
50 10.0 103 710.2
55 12.8 113 779.1
60 15.6 123 848.1
65 18.3 135 930.8
70 21.1 147 1013.5
75 23.9 159 1096.3
80 26.7 173 1192.8
85 29.4 187 1289.3
90 32.2 202 1392.7
95 35.0 218 1503.1
100 37.8 234 1613.4
105 40.6 252 1737.5
110 43.3 270 1861.6
115 46.1 289 1992.6
120 48.9 310 2137.4
125 51.7 331 2282.2
130 54.4 353 2433.9
135 57.2 377 2599.3
140 60.0 401 2764.8

 

Conclusion

There you have it folks. I hope this article was helpful and if you find that something is inaccurate here in my chart please do not hesitate to reach out to me. I have sourced this the best I could but there is always going to be conflicting data.  I’ve seen it multiple times on various refrigerants. I’ll search for a refrigerant’s pressure chart and get various results all showing different pounds per square inch temperatures.

The aim with this article is to give you accurate information so again, if you see anything incorrect please let me know by contacting me here. On top of this post we are also working on a comprehensive refrigerant pressure/temperature listing. The goal is to have every refrigerant out there listed with a pressure/temperature chart that is easily available. 

Thanks for reading,

Alec Johnson

RefrigerantHQ

Owner

RefrigerantHQ's Pressure Charts

One of the very first steps when it comes to diagnosing your home air conditioner, refrigerator, or even your vehicle’s air conditioner is understanding the temperature and the current pressure that your system is operating at. Having these facts along with the saturation point, the subcool, and the superheat  numbers for the refrigerant you are working on are essential when it comes to really understanding what is going wrong with your system.

After a visual inspection the very next step for the most seasoned technicians is pulling out their gauges and checking the pressure and temperature. It just becomes second nature after enough calls. I have heard stories of rookie techs calling some of the pros on their team for help on a system that they’re stuck on. It doesn’t matter what the situation is. It doesn’t matter if you’re in Miami or in Fargo. It will never fail that one of the first questions the pros ask the rookie is what is your subcool and what is your superheat? Having  and understanding these numbers is key to figuring out what to do next.

But, these numbers won’t do you any good if you don’t know what refrigerant you are dealing with and what the refrigerant’s boiling point is at each pressure level. This article aims at providing you with just that information.

R-410A Pressure Chart

R-410A, or Puron, is one of the most popular refrigerants in today’s modern world. However, if you rewind just fifteen or twenty years you would find that very little people even knew about it. Most contractors and technicians worked with R-22 systems for home and commercial air conditioning. R-22 had been the standard bearer refrigerant for nearly fifty years. However, R-22 harmed the Ozone Layer and a replacement refrigerant needed to be found. This is where our friend R-410A came into play. New machines from 2010 and onwards were banned from using R-22. Instead, they were outfitted with R-410A. 

If you would like to read more about R-410A  refrigerant please click here to be taken to our refrigerant fact sheet.

Let’s take a look at our pressure chart:

°F °C PSI KPA
–37.7 -38.7 12 82.7
–34.7 -37.0 14 96.5
–32.0 -35.6 16 110.3
–29.4 -34.1 18 124.1
–36.9 -38.3 20 137.9
–24.5 -31.4 22 151.7
–22.2 -30.1 24 165.5
–20.0 -29.0 26 179.3
–17.9 -27.7 28 193.1
–15.8 -26.6 30 206.8
–13.8 -25.4 32 220.6
–11.9 -24.4 34 234.4
–10.1 -23.4 36 248.2
–8.3 -22.4 38 262.0
–6.5 -21.4 40 275.8
–4.5 -20.3 42 289.6
–3.2 -19.6 44 303.4
–1.6 -18.7 46 317.2
0 -17.8 48 330.9
1.5 -16.9 50 344.7
3 -16.1 52 358.5
4.5 -15.3 54 372.3
5.9 -14.5 56 386.1
7.3 -13.7 58 399.9
8.6 -13.0 60 413.7
10 -12.2 62 427.5
11.3 -11.5 64 441.3
12.6 -10.8 66 455.1
13.8 -10.1 68 468.8
15.1 -9.4 70 482.6
16.3 -8.7 72 496.4
17.5 -8.1 74 510.2
18.7 -7.4 76 524.0
19.8 -6.8 78 537.8
21 -6.1 80 551.6
22.1 -5.5 82 565.4
23.2 -4.9 84 579.2
24.3 -4.3 86 592.9
25.4 -3.7 88 606.7
26.4 -3.1 90 620.5
27.4 -2.6 92 634.3
28.5 -1.9 94 648.1
29.5 -1.4 96 661.9
30.5 -0.8 98 675.7
31.2 -0.4 100 689.5
32.2 0.1 102 703.3
33.2 0.7 104 717.1
34.1 1.2 106 730.8
35.1 1.7 108 744.6
35.5 1.9 110 758.4
36.9 2.7 112 772.2
37.8 3.2 114 786.0
38.7 3.7 116 799.8
39.5 4.2 118 813.6
40.5 4.7 120 827.4
41.3 5.2 122 841.2
42.2 5.7 124 855.0
43 6.1 126 868.7
43.8 6.6 128 882.5
44.7 7.1 130 896.3
45.5 7.5 132 910.1
46.3 7.9 134 923.9
47.1 8.4 136 937.7
47.9 8.8 138 951.5
48.7 9.3 140 965.3
49.5 9.7 142 979.1
50.3 10.2 144 992.8
51.1 10.6 146 1006.6
51.8 11.0 148 1020.4
52.5 11.4 150 1034.2
53.3 11.8 152 1048.0
54 12.2 154 1061.8
54.8 12.7 156 1075.6
55.5 13.1 158 1089.4
56.2 13.4 160 1103.2
57 13.9 162 1117.0
57.7 14.3 164 1130.7
58.4 14.7 166 1144.5
59 15.0 168 1158.3
59.8 15.4 170 1172.1
60.5 15.8 172 1185.9
61.1 16.2 174 1199.7
61.8 16.6 176 1213.5
62.5 16.9 178 1227.3
63.1 17.3 180 1241.1
63.8 17.7 182 1254.8
64.5 18.1 184 1268.6
65.1 18.4 186 1282.4
65.8 18.8 188 1296.2
66.4 19.1 190 1310.0
67 19.4 192 1323.8
67.7 19.8 194 1337.6
68.3 20.2 196 1351.4
68.9 20.5 198 1365.2
69.5 20.8 200 1379.0
70.1 21.2 202 1392.7
70.7 21.5 204 1406.5
71.4 21.9 206 1420.3
72 22.2 208 1434.1
72.6 22.6 210 1447.9
73.2 22.9 212 1461.7
73.8 23.2 214 1475.5
74.3 23.5 216 1489.3
74.9 23.8 218 1503.1
75.5 24.2 220 1516.8
76.1 24.5 222 1530.6
76.7 24.8 224 1544.4
77.2 25.1 226 1558.2
77.8 25.4 228 1572.0
78.4 25.8 230 1585.8
78.9 26.1 232 1599.6
79.5 26.4 234 1613.4
80 26.7 236 1627.2
80.6 27.0 238 1641.0
81.1 27.3 240 1654.7
81.6 27.6 242 1668.5
82.2 27.9 244 1682.3
82.7 28.2 246 1696.1
83.3 28.5 248 1709.9
83.8 28.8 250 1723.7
84.3 29.1 252 1737.5
84.8 29.3 254 1751.3
85.4 29.7 256 1765.1
85.9 29.9 258 1778.8
86.4 30.2 260 1792.6
86.9 30.5 262 1806.4
87.4 30.8 264 1820.2
87.9 31.1 266 1834.0
88.4 31.3 268 1847.8
88.9 31.6 270 1861.6
89.4 31.9 272 1875.4
89.9 32.2 274 1889.2
90.4 32.4 276 1903.0
90.9 32.7 278 1916.7
91.4 33.0 280 1930.5
91.9 33.3 282 1944.3
92.4 33.6 284 1958.1
92.8 33.8 286 1971.9
93.3 34.1 288 1985.7
93.8 34.3 290 1999.5
94.3 34.6 292 2013.3
94.8 34.9 294 2027.1
95.2 35.1 296 2040.8
95.7 35.4 298 2054.6
96.2 35.7 300 2068.4
96.6 35.9 302 2082.2
97.1 36.2 304 2096.0
97.5 36.4 306 2109.8
98 36.7 308 2123.6
98.4 36.9 310 2137.4
98.9 37.2 312 2151.2
99.3 37.4 314 2165.0
99.7 37.6 316 2178.7
100.2 37.9 318 2192.5
100.7 38.2 320 2206.3
101.1 38.4 322 2220.1
101.6 38.7 324 2233.9
102 38.9 326 2247.7
102.4 39.1 328 2261.5
102.9 39.4 330 2275.3
103.3 39.6 332 2289.1
103.7 39.8 334 2302.8
104.2 40.1 336 2316.6
104.6 40.3 338 2330.4
105.1 40.6 340 2344.2
105.4 40.8 342 2358.0
105.8 41.0 344 2371.8
106.3 41.3 346 2385.6
106.6 41.4 348 2399.4
107.1 41.7 350 2413.2
107.5 41.9 352 2427.0
107.9 42.2 354 2440.7
108.3 42.4 356 2454.5
108.8 42.7 358 2468.3
109.2 42.9 360 2482.1
109.6 43.1 362 2495.9
110 43.3 364 2509.7
110.4 43.6 366 2523.5
110.8 43.8 368 2537.3
111.2 44.0 370 2551.1
111.6 44.2 372 2564.9
112 44.4 374 2578.6
112.4 44.7 376 2592.4
112.6 44.8 378 2606.2
113.1 45.1 380 2620.0
113.5 45.3 382 2633.8
113.9 45.5 384 2647.6
114.3 45.7 386 2661.4
114.7 45.9 388 2675.2
115 46.1 390 2689.0
115.5 46.4 392 2702.7
115.8 46.6 394 2716.5
116.2 46.8 396 2730.3
116.6 47.0 398 2744.1
117 47.2 400 2757.9
117.3 47.4 402 2771.7
117.7 47.6 404 2785.5
118.1 47.8 406 2799.3
118.5 48.1 408 2813.1
118.8 48.2 410 2826.9
119.2 48.4 412 2840.6
119.6 48.7 414 2854.4
119.9 48.8 416 2868.2
120.3 49.1 418 2882.0
120.7 49.3 420 2895.8
121 49.4 422 2909.6
121.4 49.7 424 2923.4
121.7 49.8 426 2937.2
122.1 50.1 428 2951.0
122.5 50.3 430 2964.7
122.8 50.4 432 2978.5
123.2 50.7 434 2992.3
123.5 50.8 436 3006.1
123.9 51.1 438 3019.9
124.2 51.2 440 3033.7
124.6 51.4 442 3047.5
124.9 51.6 444 3061.3
125.3 51.8 446 3075.1
125.6 52.0 448 3088.9
126 52.2 450 3102.6
126.3 52.4 452 3116.4
126.6 52.6 454 3130.2
127 52.8 456 3144.0
127.3 52.9 458 3157.8
127.7 53.2 460 3171.6
128 53.3 462 3185.4
128.3 53.5 464 3199.2
128.7 53.7 466 3213.0
129 53.9 468 3226.7
129.3 54.1 470 3240.5
129.7 54.3 472 3254.3
130 54.4 474 3268.1
130.3 54.6 476 3281.9
130.7 54.8 478 3295.7
131 55.0 480 3309.5
131.3 55.2 482 3323.3
131.6 55.3 484 3337.1
132 55.6 486 3350.9
132.3 55.7 488 3364.6
132.6 55.9 490 3378.4
132.9 56.1 492 3392.2
133.3 56.3 494 3406.0
133.6 56.4 496 3419.8
133.9 56.6 498 3433.6
134 56.7 500 3447.4
134.5 56.9 502 3461.2
134.8 57.1 504 3475.0
135.2 57.3 506 3488.7
135.5 57.5 508 3502.5
135.8 57.7 510 3516.3
136.1 57.8 512 3530.1
136.4 58.0 514 3543.9
136.7 58.2 516 3557.7
137 58.3 518 3571.5
137.3 58.5 520 3585.3
137.6 58.7 522 3599.1
137.9 58.8 524 3612.9
138.3 59.1 526 3626.6
138.6 59.2 528 3640.4
138.9 59.4 530 3654.2
139.2 59.6 532 3668.0
139.5 59.7 534 3681.8
139.8 59.9 536 3695.6
140.1 60.1 538 3709.4
140.4 60.2 540 3723.2
141 60.6 544 3750.7
141.6 60.9 548 3778.3
142.1 61.2 552 3805.9
142.7 61.5 556 3833.5
143.3 61.8 560 3861.1
143.9 62.2 564 3888.6
144.5 62.5 568 3916.2
145 62.8 572 3943.8
145.6 63.1 576 3971.4
146.2 63.4 580 3999.0
146.7 63.7 584 4026.5
147.3 64.1 588 4054.1
147.9 64.4 592 4081.7
148.4 64.7 596 4109.3
149 65.0 600 4136.9
149.5 65.3 604 4164.4
150.1 65.6 608 4192.0
150.6 65.9 612 4219.6
151.2 66.2 616 4247.2
151.7 66.5 620 4274.8
152.3 66.8 624 4302.3
152.8 67.1 628 4329.9
153.4 67.4 632 4357.5
153.9 67.7 636 4385.1
154.5 68.1 640 4412.6
155 68.3 644 4440.2
155.5 68.6 648 4467.8
156.1 68.9 652 4495.4
156.6 69.2 656 4523.0
157.1 69.5 660 4550.5
157.7 69.8 664 4578.1
158.2 70.1 668 4605.7
158.7 70.4 672 4633.3
159.2 70.7 676 4660.9
159.8 71.0 680 4688.4
160.3 71.3 684 4716.0
160.8 71.6 688 4743.6
161.3 71.8 692 4771.2
161.8 72.1 696 4798.8

Conclusion

There you have it folks. I hope this article was helpful and if you find that something is inaccurate here in my chart please do not hesitate to reach out to me. I have sourced this the best I could but there is always going to be conflicting data.  I’ve seen it multiple times on various refrigerants. I’ll search for a refrigerant’s pressure chart and get various results all showing different pounds per square inch temperatures.

The aim with this article is to give you accurate information so again, if you see anything incorrect please let me know by contacting me here. On top of this post we are also working on a comprehensive refrigerant pressure/temperature listing. The goal is to have every refrigerant out there listed with a pressure/temperature chart that is easily available. 

Thanks for reading,

Alec Johnson

RefrigerantHQ

Owner

RefrigerantHQ's Pressure Charts

One of the very first steps when it comes to diagnosing your home air conditioner, refrigerator, or even your vehicle’s air conditioner is understanding the temperature and the current pressure that your system is operating at. Having these facts along with the saturation point, the subcool, and the superheat  numbers for the refrigerant you are working on are essential when it comes to really understanding what is going wrong with your system.

After a visual inspection the very next step for the most seasoned technicians is pulling out their gauges and checking the pressure and temperature. It just becomes second nature after enough calls. I have heard stories of rookie techs calling some of the pros on their team for help on a system that they’re stuck on. It doesn’t matter what the situation is. It doesn’t matter if you’re in Miami or in Fargo. It will never fail that one of the first questions the pros ask the rookie is what is your subcool and what is your superheat? Having  and understanding these numbers is key to figuring out what to do next.

But, these numbers won’t do you any good if you don’t know what refrigerant you are dealing with and what the refrigerant’s boiling point is at each pressure level. This article aims at providing you with just that information.

R-290 Pressure Chart

A few decades ago very few people had heard of using propane as a refrigerant. Propane was the stuff you use in your grill and what powered your forklift. While the concept of using R-290 as a refrigerant had been around for over a century it was rarely used due to the flammability risk. Over the years though technology has improved and the need for an environmentally refrigerant has surfaced. The HFC refrigerants that most of the world uses today have a huge impact on Global Warming and an alternative needed to be found. Propane provides the answer to that alternative. Already today in the United States we are seeing propane in vending machines, ice machines, stand alone supermarket refrigerators/freezers, and in many other applications. As time moves forward and the Environmental Protection Agency becomes more comfortable with R-290 we may begin to see more and more applications be authorized to use propane. 

If you would like to read more about R-290 propane refrigerant please click here to be taken to our refrigerant fact sheet.

Let’s take a look at our pressure chart:

°F °C PSI KPA
-40 -40 1.4 9.7
-35 -37 3.4 23.4
-30 -34 5.7 39.3
-25 -32 8.1 55.8
-20 -29 10.7 73.8
-15 -26 13.6 93.8
-10 -23 16.7 115.1
-5 -21 20.1 138.6
0 -18 23.7 163.4
5 -15 27.6 190.3
10 -12 31.8 219.3
15 -9 36.3 250.3
20 -7 41.1 283.4
25 -4 46.3 319.2
30 -1 51.8 357.15
35 2 57.7 397.8
40 4 63.9 440.6
45 7 70.6 486.8
50 10 77.6 535
55 13 85.1 586.7
60 16 93 641.2
65 18 101.4 699.1
70 21 110.2 759.8
75 24 119.5 823.9
80 27 129.3 891.5
85 29 139.7 963.2
90 32 150.5 1037.7
95 35 161.9 1116.3
100 38 173.9 1198.9
105 41 186.5 1285.8
110 43 199.6 1376.2
115 46 213.4 1471.3
120 49 227.8 1570.6
125 52 242.9 1674.7
130 54 258.7 1783.7
135 57 275.1 1896.7
140 60 292.3 2015.3
145 63 310.2 2138.7
150 66 328.9 2267.7
155 68 348.4 2402.1
160 71 368.7 2542.1

Conclusion

There you have it folks. I hope this article was helpful and if you find that something is inaccurate here in my chart please do not hesitate to reach out to me. I have sourced this the best I could but there is always going to be conflicting data.  I’ve seen it multiple times on various refrigerants. I’ll search for a refrigerant’s pressure chart and get various results all showing different pounds per square inch temperatures.

The aim with this article is to give you accurate information so again, if you see anything incorrect please let me know by contacting me here. On top of this post we are also working on a comprehensive refrigerant pressure/temperature listing. The goal is to have every refrigerant out there listed with a pressure/temperature chart that is easily available. 

Thanks for reading,

Alec Johnson

RefrigerantHQ

Owner

RefrigerantHQ's Pressure Charts

One of the very first steps when it comes to diagnosing your home air conditioner, refrigerator, or even your vehicle’s air conditioner is understanding the temperature and the current pressure that your system is operating at. Having these facts along with the saturation point, the subcool, and the superheat  numbers for the refrigerant you are working on are essential when it comes to really understanding what is going wrong with your system.

After a visual inspection the very next step for the most seasoned technicians is pulling out their gauges and checking the pressure and temperature. It just becomes second nature after enough calls. I have heard stories of rookie techs calling some of the pros on their team for help on a system that they’re stuck on. It doesn’t matter what the situation is. It doesn’t matter if you’re in Miami or in Fargo. It will never fail that one of the first questions the pros ask the rookie is what is your subcool and what is your superheat? Having  and understanding these numbers is key to figuring out what to do next.

But, these numbers won’t do you any good if you don’t know what refrigerant you are dealing with and what the refrigerant’s boiling point is at each pressure level. This article aims at providing you with just that information.

R-600a Pressure Chart

Isobutane is being seen more and more across the world. This holds especially true as various countries begin to phase out the ever common HFC refrigerants such as R-404A and R-134a. There will come a time where HFCs area thing of the past and we need to be ready for it. Today we are seeing isobutane based systems in home refrigerators/freezers, vending machines, ice machines, stand alone supermarket refrigerators/freezers, and many more expanding options. While they are quite popular in Europe and in Asia it is only a matter of time before they start showing up in United States. If you haven’t run into one of these systems yet then it’s only a matter of time. For more information on R-600a please click here to be taken to our R-600a Refrigerant Fact Sheet.

Let’s take a look at our pressure chart:

°F °C psi kpa
-40 -40 4.16 28.7
-36 -38 4.6 31.75
-33 -36 5.08 35.05
-29 -34 5.6 38.62
-26 -32 6.16 42.47
-22 -30 6.76 46.62
-18 -28 7.41 51.09
-15 -26 8.11 55.9
-11 -24 8.85 61.05
-8 -22 9.66 66.57
-4 -20 10.51 72.48
0 -18 11.43 78.79
3 -16 12.4 85.52
7 -14 13.45 92.7
10 -12 14.55 100.33
14 -10 15.73 108.45
18 -8 16.98 117.07
21 -6 18.31 126.21
25 -4 19.71 135.89
28 -2 21.19 146.13
32 0 22.77 156.96
36 2 24.42 168.39
39 4 26.17 180.45
43 6 28.02 193.16
46 8 29.96 206.54
50 10 32 220.61
54 12 34.14 235.41
57 14 36.4 250.94
61 16 38.76 267.24
64 18 41.24 284.32
68 20 43.83 302.22
72 22 46.55 320.95
75 24 49.39 340.54
79 26 52.36 361.02
82 28 55.46 382.4
86 30 58.7 404.72
90 32 62.08 428
93 34 65.6 452.26
97 36 69.26 477.53
100 38 73.08 503.84
104 40 77.05 531.21
108 42 81.17 559.66
111 44 85.46 589.23
115 46 89.92 619.95
118 48 94.54 651.82
122 50 99.34 684.9
126 52 104.31 719.19
129 54 109.47 754.74
133 56 114.81 791.56

Conclusion

There you have it folks. I hope this article was helpful and if you find that something is inaccurate here in my chart please do not hesitate to reach out to me. I have sourced this the best I could but there is always going to be conflicting data.  I’ve seen it multiple times on various refrigerants. I’ll search for a refrigerant’s pressure chart and get various results all showing different pounds per square inch temperatures.

The aim with this article is to give you accurate information so again, if you see anything incorrect please let me know by contacting me here. On top of this post we are also working on a comprehensive refrigerant pressure/temperature listing. The goal is to have every refrigerant out there listed with a pressure/temperature chart that is easily available. 

Thanks for reading,

Alec Johnson

RefrigerantHQ

Owner