R-455A PT Chart

R-455A saturation pressure, −27 to 133 °F−32 to 56 °C. Used in low-GWP commercial refrigeration and heat pumps.

How to use ↓

Safety class A2LZeotropic blendGlide 21.50 °F at 40 °F evapGlide 11.94 K at 4.4 °C evap

PT lookup

Step 1 Refrigerant

Step 2 I know the

Temperature Pressure

Step 3 Temperature

°F°C

Type a temperature to see the saturation pressure.

R-455A pressure temperature table

Liquid = bubble (subcooling). Vapor = dew (superheat). Highlighted: 40 °F and 100 °F.Liquid = bubble (subcooling). Vapor = dew (superheat). Negative kPa = vacuum. Highlighted: 4 °C and 38 °C.

The table covers −27 to 133 °F−32 to 56 °C only: the published manufacturer data stops there, and the table is not extrapolated past it.

R-455A saturation pressure by temperature, °F and psig (vacuum in inches of mercury)
°F	Liquid bubble, psig	Vapor dew, psig
-27	18.8	5.1
-26	19.6	5.6
-25	20.3	6.1
-24	21.1	6.6
-23	21.8	7.1
-22	22.6	7.6
-21	23.4	8.2
-20	24.2	8.7
-19	25.1	9.3
-18	25.9	9.9
-17	26.7	10.5
-16	27.6	11.1
-15	28.5	11.7
-14	29.4	12.3
-13	30.3	12.9
-12	31.2	13.6
-11	32.1	14.2
-10	33.1	14.9
-9	34.0	15.6
-8	35.0	16.3
-7	36.0	17.0
-6	37.0	17.7
-5	38.0	18.4
-4	39.0	19.1
-3	40.1	19.9
-2	41.2	20.7
-1	42.2	21.4
0	43.3	22.2
1	44.5	23.0
2	45.6	23.9
3	46.7	24.7
4	47.9	25.5
5	49.1	26.4
6	50.3	27.3
7	51.5	28.2
8	52.7	29.1
9	53.9	30.0
10	55.2	30.9
11	56.5	31.9
12	57.8	32.8
13	59.1	33.8
14	60.4	34.8
15	61.8	35.8
16	63.1	36.8
17	64.5	37.9
18	65.9	38.9
19	67.3	40.0
20	68.8	41.1
21	70.2	42.2
22	71.7	43.3
23	73.2	44.5
24	74.7	45.6
25	76.2	46.8
26	77.8	48.0
27	79.4	49.2
28	81.0	50.4
29	82.6	51.7
30	84.2	52.9
31	85.9	54.2
32	87.5	55.5
33	89.2	56.8
34	90.9	58.2
35	92.7	59.5
36	94.4	60.9
37	96.2	62.3
38	98.0	63.7
39	99.8	65.2
40	101.7	66.6
41	103.5	68.1
42	105.4	69.6
43	107.3	71.1
44	109.2	72.6
45	111.2	74.2
46	113.2	75.8
47	115.2	77.4
48	117.2	79.0
49	119.2	80.7
50	121.3	82.3
51	123.4	84.0
52	125.5	85.7
53	127.6	87.5
54	129.8	89.2
55	131.9	91.0
56	134.1	92.8
57	136.4	94.6
58	138.6	96.5
59	140.9	98.4
60	143.2	100.3
61	145.5	102.2
62	147.9	104.1
63	150.2	106.1
64	152.6	108.1
65	155.1	110.1
66	157.5	112.2
67	160.0	114.2
68	162.5	116.3
69	165.0	118.5
70	167.6	120.6
71	170.2	122.8
72	172.8	125.0
73	175.4	127.2
74	178.0	129.5
75	180.7	131.8
76	183.4	134.1
77	186.2	136.4
78	188.9	138.8
79	191.7	141.2
80	194.6	143.6
81	197.4	146.1
82	200.3	148.6
83	203.2	151.1
84	206.1	153.6
85	209.1	156.2
86	212.1	158.8
87	215.1	161.4
88	218.1	164.1
89	221.2	166.8
90	224.3	169.5
91	227.4	172.3
92	230.6	175.1
93	233.8	177.9
94	237.0	180.7
95	240.2	183.6
96	243.5	186.5
97	246.8	189.5
98	250.2	192.5
99	253.5	195.5
100	256.9	198.5
101	260.4	201.6
102	263.8	204.8
103	267.3	207.9
104	270.8	211.1
105	274.4	214.3
106	278.0	217.6
107	281.6	220.9
108	285.2	224.2
109	288.9	227.6
110	292.6	231.0
111	296.3	234.4
112	300.1	237.9
113	303.9	241.4
114	307.7	245.0
115	311.6	248.6
116	315.5	252.2
117	319.4	255.9
118	323.4	259.6
119	327.4	263.4
120	331.4	267.2
121	335.5	271.0
122	339.6	274.9
123	343.7	278.8
124	347.9	282.8
125	352.1	286.8
126	356.3	290.8
127	360.6	294.9
128	364.9	299.0
129	369.2	303.2
130	373.6	307.4
131	378.0	311.7
132	382.4	316.0
133	386.9	320.4

R-455A saturation pressure by temperature, °C and kPa (negative = vacuum)
°C	Liquid bubble, kPa	Vapor dew, kPa
-32	137.0	39.8
-31	146.4	46.2
-30	156.0	52.7
-29	166.0	59.5
-28	176.2	66.6
-27	186.7	73.9
-26	197.6	81.4
-25	208.7	89.2
-24	220.2	97.2
-23	231.9	105.5
-22	244.0	114.1
-21	256.5	122.9
-20	269.2	132.0
-19	282.3	141.4
-18	295.8	151.1
-17	309.6	161.1
-16	323.7	171.4
-15	338.3	182.0
-14	353.1	192.9
-13	368.4	204.2
-12	384.1	215.7
-11	400.1	227.7
-10	416.5	239.9
-9	433.3	252.5
-8	450.5	265.5
-7	468.2	278.8
-6	486.2	292.5
-5	504.7	306.6
-4	523.6	321.0
-3	542.9	335.8
-2	562.7	351.1
-1	582.9	366.7
0	603.5	382.8
1	624.6	399.3
2	646.2	416.2
3	668.3	433.5
4	690.8	451.3
5	713.8	469.5
6	737.3	488.2
7	761.2	507.3
8	785.7	527.0
9	810.7	547.1
10	836.2	567.6
11	862.2	588.7
12	888.7	610.3
13	915.7	632.4
14	943.3	655.0
15	971.5	678.2
16	1000.1	701.9
17	1029.3	726.1
18	1059.1	750.9
19	1089.5	776.3
20	1120.4	802.2
21	1151.9	828.7
22	1183.9	855.8
23	1216.6	883.5
24	1249.8	911.8
25	1283.7	940.7
26	1318.1	970.2
27	1353.2	1000.4
28	1388.9	1031.3
29	1425.2	1062.8
30	1462.1	1094.9
31	1499.7	1127.7
32	1537.9	1161.3
33	1576.7	1195.5
34	1616.2	1230.4
35	1656.4	1266.1
36	1697.2	1302.4
37	1738.7	1339.6
38	1780.9	1377.4
39	1823.7	1416.1
40	1867.3	1455.5
41	1911.5	1495.7
42	1956.4	1536.7
43	2002.0	1578.5
44	2048.3	1621.2
45	2095.4	1664.7
46	2143.1	1709.0
47	2191.6	1754.2
48	2240.8	1800.3
49	2290.8	1847.3
50	2341.4	1895.2
51	2392.8	1944.1
52	2445.0	1993.8
53	2497.9	2044.6
54	2551.6	2096.3
55	2606.0	2149.1
56	2661.2	2202.8

Back to the lookup ↑

R-455A PT Chart

°F / psig · Safety class A2L · Zeotropic blend

refrigerantptchart.com

°F	Liquid	Vapor
-27	18.8	5.1
-26	19.6	5.6
-25	20.3	6.1
-24	21.1	6.6
-23	21.8	7.1
-22	22.6	7.6
-21	23.4	8.2
-20	24.2	8.7
-19	25.1	9.3
-18	25.9	9.9
-17	26.7	10.5
-16	27.6	11.1
-15	28.5	11.7
-14	29.4	12.3
-13	30.3	12.9
-12	31.2	13.6
-11	32.1	14.2
-10	33.1	14.9
-9	34.0	15.6
-8	35.0	16.3
-7	36.0	17.0
-6	37.0	17.7
-5	38.0	18.4
-4	39.0	19.1
-3	40.1	19.9
-2	41.2	20.7
-1	42.2	21.4
0	43.3	22.2
1	44.5	23.0
2	45.6	23.9
3	46.7	24.7
4	47.9	25.5
5	49.1	26.4
6	50.3	27.3
7	51.5	28.2
8	52.7	29.1
9	53.9	30.0
10	55.2	30.9
11	56.5	31.9
12	57.8	32.8
13	59.1	33.8

°F	Liquid	Vapor
14	60.4	34.8
15	61.8	35.8
16	63.1	36.8
17	64.5	37.9
18	65.9	38.9
19	67.3	40.0
20	68.8	41.1
21	70.2	42.2
22	71.7	43.3
23	73.2	44.5
24	74.7	45.6
25	76.2	46.8
26	77.8	48.0
27	79.4	49.2
28	81.0	50.4
29	82.6	51.7
30	84.2	52.9
31	85.9	54.2
32	87.5	55.5
33	89.2	56.8
34	90.9	58.2
35	92.7	59.5
36	94.4	60.9
37	96.2	62.3
38	98.0	63.7
39	99.8	65.2
40	101.7	66.6
41	103.5	68.1
42	105.4	69.6
43	107.3	71.1
44	109.2	72.6
45	111.2	74.2
46	113.2	75.8
47	115.2	77.4
48	117.2	79.0
49	119.2	80.7
50	121.3	82.3
51	123.4	84.0
52	125.5	85.7
53	127.6	87.5
54	129.8	89.2

°F	Liquid	Vapor
55	131.9	91.0
56	134.1	92.8
57	136.4	94.6
58	138.6	96.5
59	140.9	98.4
60	143.2	100.3
61	145.5	102.2
62	147.9	104.1
63	150.2	106.1
64	152.6	108.1
65	155.1	110.1
66	157.5	112.2
67	160.0	114.2
68	162.5	116.3
69	165.0	118.5
70	167.6	120.6
71	170.2	122.8
72	172.8	125.0
73	175.4	127.2
74	178.0	129.5
75	180.7	131.8
76	183.4	134.1
77	186.2	136.4
78	188.9	138.8
79	191.7	141.2
80	194.6	143.6
81	197.4	146.1
82	200.3	148.6
83	203.2	151.1
84	206.1	153.6
85	209.1	156.2
86	212.1	158.8
87	215.1	161.4
88	218.1	164.1
89	221.2	166.8
90	224.3	169.5
91	227.4	172.3
92	230.6	175.1
93	233.8	177.9
94	237.0	180.7
95	240.2	183.6

°F	Liquid	Vapor
96	243.5	186.5
97	246.8	189.5
98	250.2	192.5
99	253.5	195.5
100	256.9	198.5
101	260.4	201.6
102	263.8	204.8
103	267.3	207.9
104	270.8	211.1
105	274.4	214.3
106	278.0	217.6
107	281.6	220.9
108	285.2	224.2
109	288.9	227.6
110	292.6	231.0
111	296.3	234.4
112	300.1	237.9
113	303.9	241.4
114	307.7	245.0
115	311.6	248.6
116	315.5	252.2
117	319.4	255.9
118	323.4	259.6
119	327.4	263.4
120	331.4	267.2
121	335.5	271.0
122	339.6	274.9
123	343.7	278.8
124	347.9	282.8
125	352.1	286.8
126	356.3	290.8
127	360.6	294.9
128	364.9	299.0
129	369.2	303.2
130	373.6	307.4
131	378.0	311.7
132	382.4	316.0
133	386.9	320.4

Liquid = bubble (use for subcooling). Vapor = dew (use for superheat). Bold rows: 40 °F and 100 °F. Reference only: always verify with the manufacturer’s data and your gauges.

R-455A PT Chart

°C / kPa (gauge) · Safety class A2L · Zeotropic blend

refrigerantptchart.com

°C	Liquid	Vapor
-32	137.0	39.8
-31	146.4	46.2
-30	156.0	52.7
-29	166.0	59.5
-28	176.2	66.6
-27	186.7	73.9
-26	197.6	81.4
-25	208.7	89.2
-24	220.2	97.2
-23	231.9	105.5
-22	244.0	114.1
-21	256.5	122.9
-20	269.2	132.0
-19	282.3	141.4
-18	295.8	151.1
-17	309.6	161.1
-16	323.7	171.4
-15	338.3	182.0
-14	353.1	192.9
-13	368.4	204.2
-12	384.1	215.7
-11	400.1	227.7
-10	416.5	239.9
-9	433.3	252.5
-8	450.5	265.5
-7	468.2	278.8
-6	486.2	292.5
-5	504.7	306.6
-4	523.6	321.0
-3	542.9	335.8

°C	Liquid	Vapor
-2	562.7	351.1
-1	582.9	366.7
0	603.5	382.8
1	624.6	399.3
2	646.2	416.2
3	668.3	433.5
4	690.8	451.3
5	713.8	469.5
6	737.3	488.2
7	761.2	507.3
8	785.7	527.0
9	810.7	547.1
10	836.2	567.6
11	862.2	588.7
12	888.7	610.3
13	915.7	632.4
14	943.3	655.0
15	971.5	678.2
16	1000.1	701.9
17	1029.3	726.1
18	1059.1	750.9
19	1089.5	776.3
20	1120.4	802.2
21	1151.9	828.7
22	1183.9	855.8
23	1216.6	883.5
24	1249.8	911.8
25	1283.7	940.7
26	1318.1	970.2
27	1353.2	1000.4

°C	Liquid	Vapor
28	1388.9	1031.3
29	1425.2	1062.8
30	1462.1	1094.9
31	1499.7	1127.7
32	1537.9	1161.3
33	1576.7	1195.5
34	1616.2	1230.4
35	1656.4	1266.1
36	1697.2	1302.4
37	1738.7	1339.6
38	1780.9	1377.4
39	1823.7	1416.1
40	1867.3	1455.5
41	1911.5	1495.7
42	1956.4	1536.7
43	2002.0	1578.5
44	2048.3	1621.2
45	2095.4	1664.7
46	2143.1	1709.0
47	2191.6	1754.2
48	2240.8	1800.3
49	2290.8	1847.3
50	2341.4	1895.2
51	2392.8	1944.1
52	2445.0	1993.8
53	2497.9	2044.6
54	2551.6	2096.3
55	2606.0	2149.1
56	2661.2	2202.8

Liquid = bubble (use for subcooling). Vapor = dew (use for superheat). Bold rows: 4 °C and 38 °C. Reference only: always verify with the manufacturer’s data and your gauges.

How to use

Choose Temperature or Pressure and type the number. The answer shows straight away.
Blends show two values: use vapor (dew) for superheat and liquid (bubble) for subcooling.
Tap °C · kPa for metric. Below 0 psig, pressure is in inches of mercury (inHg) vacuum.
Press Print pocket chart for a one-page chart (Letter or A4) for the van or the tool bag.

About this R-455A chart

This R-455A pressure temperature chart gives the saturation pressure for every degree, in psig with °F or kPa (gauge) with °C. As a blend, it has a liquid (bubble) and a vapor (dew) column.

Source: manufacturer charts (Honeywell). Reference only: always verify with the manufacturer’s data and your gauges.

FAQ

What is the R-455A pressure at 40 °F?

66.6 psig vapor (dew) and 101.7 psig liquid (bubble) at saturation, from the table above.

What is the R-455A pressure at 100 °F?

198.5 psig vapor (dew) and 256.9 psig liquid (bubble) at saturation.

Which column do I use for superheat and subcooling?

Use vapor (dew) for superheat and liquid (bubble) for subcooling. R-455A has 21.50 °F of glide at a 40 °F evaporator, so the two columns differ.

Coming from Check & Charge or PT Pro? See the free offline alternative (no login).

R-455A PT Chart

PT lookup

R-455A pressure temperature table

How to use

About this R-455A chart

FAQ

Related