R-454B PT Chart

R-454B saturation pressure, −40 to 150 °F−40 to 65 °C. Used in new residential A/C and heat pumps.

How to use ↓

Safety class A2LZeotropic blendGlide 2.34 °F at 40 °F evapGlide 1.30 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-454B 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.

R-454B saturation pressure by temperature, °F and psig (vacuum in inches of mercury)
°F	Liquid bubble, psig	Vapor dew, psig
-40	9.5	8.4
-39	10.1	9.0
-38	10.8	9.6
-37	11.4	10.2
-36	12.1	10.8
-35	12.7	11.4
-34	13.4	12.1
-33	14.1	12.8
-32	14.8	13.4
-31	15.5	14.1
-30	16.2	14.8
-29	17.0	15.5
-28	17.7	16.3
-27	18.5	17.0
-26	19.3	17.7
-25	20.1	18.5
-24	20.9	19.3
-23	21.7	20.1
-22	22.6	20.9
-21	23.4	21.7
-20	24.3	22.6
-19	25.2	23.4
-18	26.1	24.3
-17	27.0	25.2
-16	28.0	26.1
-15	28.9	27.0
-14	29.9	27.9
-13	30.9	28.8
-12	31.9	29.8
-11	32.9	30.8
-10	33.9	31.8
-9	35.0	32.8
-8	36.0	33.8
-7	37.1	34.9
-6	38.2	35.9
-5	39.4	37.0
-4	40.5	38.1
-3	41.7	39.2
-2	42.9	40.4
-1	44.1	41.5
0	45.3	42.7
1	46.5	43.9
2	47.8	45.1
3	49.0	46.3
4	50.3	47.6
5	51.7	48.8
6	53.0	50.1
7	54.3	51.4
8	55.7	52.7
9	57.1	54.1
10	58.5	55.4
11	60.0	56.8
12	61.4	58.2
13	62.9	59.7
14	64.4	61.1
15	66.0	62.6
16	67.5	64.1
17	69.1	65.6
18	70.7	67.1
19	72.3	68.7
20	73.9	70.3
21	75.6	71.9
22	77.3	73.5
23	79.0	75.2
24	80.7	76.8
25	82.5	78.5
26	84.3	80.3
27	86.1	82.0
28	87.9	83.8
29	89.8	85.6
30	91.7	87.4
31	93.6	89.2
32	95.5	91.1
33	97.5	93.0
34	99.5	94.9
35	101.5	96.9
36	103.5	98.8
37	105.6	100.8
38	107.7	102.9
39	109.8	104.9
40	112.0	107.0
41	114.2	109.1
42	116.4	111.2
43	118.6	113.4
44	120.9	115.6
45	123.1	117.8
46	125.5	120.0
47	127.8	122.3
48	130.2	124.6
49	132.6	127.0
50	135.0	129.3
51	137.5	131.7
52	140.0	134.1
53	142.5	136.6
54	145.1	139.1
55	147.7	141.6
56	150.3	144.1
57	153.0	146.7
58	155.7	149.3
59	158.4	151.9
60	161.1	154.6
61	163.9	157.3
62	166.7	160.1
63	169.6	162.8
64	172.5	165.6
65	175.4	168.5
66	178.3	171.3
67	181.3	174.2
68	184.4	177.2
69	187.4	180.1
70	190.5	183.1
71	193.6	186.2
72	196.8	189.3
73	200.0	192.4
74	203.2	195.5
75	206.5	198.7
76	209.8	201.9
77	213.1	205.2
78	216.5	208.5
79	219.9	211.8
80	223.4	215.2
81	226.9	218.6
82	230.4	222.0
83	234.0	225.5
84	237.6	229.0
85	241.2	232.6
86	244.9	236.2
87	248.6	239.8
88	252.4	243.5
89	256.2	247.2
90	260.0	251.0
91	263.9	254.8
92	267.9	258.6
93	271.8	262.5
94	275.8	266.4
95	279.9	270.4
96	284.0	274.4
97	288.1	278.4
98	292.3	282.5
99	296.5	286.7
100	300.8	290.9
101	305.1	295.1
102	309.4	299.4
103	313.8	303.7
104	318.3	308.0
105	322.8	312.5
106	327.3	316.9
107	331.9	321.4
108	336.5	326.0
109	341.2	330.6
110	345.9	335.2
111	350.6	339.9
112	355.4	344.6
113	360.3	349.4
114	365.2	354.3
115	370.2	359.1
116	375.2	364.1
117	380.2	369.1
118	385.3	374.1
119	390.5	379.2
120	395.7	384.3
121	400.9	389.5
122	406.2	394.8
123	411.6	400.1
124	417.0	405.4
125	422.4	410.8
126	427.9	416.3
127	433.5	421.8
128	439.1	427.4
129	444.8	433.0
130	450.5	438.7
131	456.3	444.5
132	462.1	450.3
133	468.0	456.1
134	473.9	462.0
135	479.9	468.0
136	485.9	474.1
137	492.1	480.2
138	498.2	486.3
139	504.4	492.6
140	510.7	498.8
141	517.1	505.2
142	523.5	511.6
143	529.9	518.1
144	536.4	524.6
145	543.0	531.3
146	549.6	537.9
147	556.3	544.7
148	563.1	551.5
149	569.9	558.4
150	576.8	565.4

R-454B saturation pressure by temperature, °C and kPa (negative = vacuum)
°C	Liquid bubble, kPa	Vapor dew, kPa
-40	65.6	57.8
-39	73.3	65.2
-38	81.3	72.8
-37	89.5	80.7
-36	98.1	88.9
-35	106.9	97.3
-34	116.0	106.1
-33	125.4	115.1
-32	135.2	124.4
-31	145.2	134.1
-30	155.6	144.1
-29	166.4	154.3
-28	177.4	165.0
-27	188.9	175.9
-26	200.7	187.2
-25	212.8	198.9
-24	225.3	210.9
-23	238.2	223.3
-22	251.5	236.1
-21	265.2	249.2
-20	279.3	262.8
-19	293.8	276.7
-18	308.8	291.1
-17	324.1	305.8
-16	339.9	321.0
-15	356.2	336.6
-14	372.8	352.7
-13	390.0	369.2
-12	407.6	386.1
-11	425.7	403.5
-10	444.3	421.4
-9	463.4	439.8
-8	482.9	458.6
-7	503.0	478.0
-6	523.6	497.9
-5	544.8	518.2
-4	566.4	539.1
-3	588.6	560.5
-2	611.4	582.5
-1	634.7	605.0
0	658.6	628.1
1	683.1	651.7
2	708.2	676.0
3	733.9	700.8
4	760.1	726.2
5	787.0	752.2
6	814.6	778.8
7	842.7	806.0
8	871.5	833.9
9	901.0	862.4
10	931.1	891.6
11	961.9	921.4
12	993.4	951.9
13	1025.6	983.1
14	1058.5	1015.0
15	1092.1	1047.6
16	1126.4	1080.9
17	1161.4	1115.0
18	1197.2	1149.7
19	1233.8	1185.2
20	1271.1	1221.5
21	1309.2	1258.5
22	1348.0	1296.4
23	1387.7	1335.0
24	1428.2	1374.4
25	1469.5	1414.6
26	1511.6	1455.7
27	1554.5	1497.5
28	1598.3	1540.3
29	1643.0	1583.9
30	1688.5	1628.3
31	1735.0	1673.7
32	1782.3	1720.0
33	1830.5	1767.1
34	1879.6	1815.2
35	1929.7	1864.2
36	1980.7	1914.2
37	2032.7	1965.1
38	2085.6	2017.1
39	2139.5	2070.0
40	2194.4	2123.9
41	2250.3	2178.8
42	2307.2	2234.8
43	2365.2	2291.8
44	2424.1	2349.9
45	2484.2	2409.1
46	2545.3	2469.4
47	2607.5	2530.8
48	2670.8	2593.3
49	2735.2	2657.0
50	2800.7	2721.9
51	2867.4	2787.9
52	2935.2	2855.2
53	3004.2	2923.7
54	3074.4	2993.4
55	3145.8	3064.4
56	3218.4	3136.7
57	3292.2	3210.3
58	3367.3	3285.3
59	3443.7	3361.6
60	3521.3	3439.4
61	3600.3	3518.6
62	3680.5	3599.2
63	3762.2	3681.3
64	3845.2	3765.0
65	3929.6	3850.2

Back to the lookup ↑

R-454B PT Chart

°F / psig · Safety class A2L · Zeotropic blend

refrigerantptchart.com

°F	Liquid	Vapor
-40	9.5	8.4
-39	10.1	9.0
-38	10.8	9.6
-37	11.4	10.2
-36	12.1	10.8
-35	12.7	11.4
-34	13.4	12.1
-33	14.1	12.8
-32	14.8	13.4
-31	15.5	14.1
-30	16.2	14.8
-29	17.0	15.5
-28	17.7	16.3
-27	18.5	17.0
-26	19.3	17.7
-25	20.1	18.5
-24	20.9	19.3
-23	21.7	20.1
-22	22.6	20.9
-21	23.4	21.7
-20	24.3	22.6
-19	25.2	23.4
-18	26.1	24.3
-17	27.0	25.2
-16	28.0	26.1
-15	28.9	27.0
-14	29.9	27.9
-13	30.9	28.8
-12	31.9	29.8
-11	32.9	30.8
-10	33.9	31.8
-9	35.0	32.8
-8	36.0	33.8
-7	37.1	34.9
-6	38.2	35.9
-5	39.4	37.0
-4	40.5	38.1
-3	41.7	39.2
-2	42.9	40.4
-1	44.1	41.5
0	45.3	42.7
1	46.5	43.9
2	47.8	45.1
3	49.0	46.3
4	50.3	47.6
5	51.7	48.8
6	53.0	50.1
7	54.3	51.4

°F	Liquid	Vapor
8	55.7	52.7
9	57.1	54.1
10	58.5	55.4
11	60.0	56.8
12	61.4	58.2
13	62.9	59.7
14	64.4	61.1
15	66.0	62.6
16	67.5	64.1
17	69.1	65.6
18	70.7	67.1
19	72.3	68.7
20	73.9	70.3
21	75.6	71.9
22	77.3	73.5
23	79.0	75.2
24	80.7	76.8
25	82.5	78.5
26	84.3	80.3
27	86.1	82.0
28	87.9	83.8
29	89.8	85.6
30	91.7	87.4
31	93.6	89.2
32	95.5	91.1
33	97.5	93.0
34	99.5	94.9
35	101.5	96.9
36	103.5	98.8
37	105.6	100.8
38	107.7	102.9
39	109.8	104.9
40	112.0	107.0
41	114.2	109.1
42	116.4	111.2
43	118.6	113.4
44	120.9	115.6
45	123.1	117.8
46	125.5	120.0
47	127.8	122.3
48	130.2	124.6
49	132.6	127.0
50	135.0	129.3
51	137.5	131.7
52	140.0	134.1
53	142.5	136.6
54	145.1	139.1
55	147.7	141.6

°F	Liquid	Vapor
56	150.3	144.1
57	153.0	146.7
58	155.7	149.3
59	158.4	151.9
60	161.1	154.6
61	163.9	157.3
62	166.7	160.1
63	169.6	162.8
64	172.5	165.6
65	175.4	168.5
66	178.3	171.3
67	181.3	174.2
68	184.4	177.2
69	187.4	180.1
70	190.5	183.1
71	193.6	186.2
72	196.8	189.3
73	200.0	192.4
74	203.2	195.5
75	206.5	198.7
76	209.8	201.9
77	213.1	205.2
78	216.5	208.5
79	219.9	211.8
80	223.4	215.2
81	226.9	218.6
82	230.4	222.0
83	234.0	225.5
84	237.6	229.0
85	241.2	232.6
86	244.9	236.2
87	248.6	239.8
88	252.4	243.5
89	256.2	247.2
90	260.0	251.0
91	263.9	254.8
92	267.9	258.6
93	271.8	262.5
94	275.8	266.4
95	279.9	270.4
96	284.0	274.4
97	288.1	278.4
98	292.3	282.5
99	296.5	286.7
100	300.8	290.9
101	305.1	295.1
102	309.4	299.4
103	313.8	303.7

°F	Liquid	Vapor
104	318.3	308.0
105	322.8	312.5
106	327.3	316.9
107	331.9	321.4
108	336.5	326.0
109	341.2	330.6
110	345.9	335.2
111	350.6	339.9
112	355.4	344.6
113	360.3	349.4
114	365.2	354.3
115	370.2	359.1
116	375.2	364.1
117	380.2	369.1
118	385.3	374.1
119	390.5	379.2
120	395.7	384.3
121	400.9	389.5
122	406.2	394.8
123	411.6	400.1
124	417.0	405.4
125	422.4	410.8
126	427.9	416.3
127	433.5	421.8
128	439.1	427.4
129	444.8	433.0
130	450.5	438.7
131	456.3	444.5
132	462.1	450.3
133	468.0	456.1
134	473.9	462.0
135	479.9	468.0
136	485.9	474.1
137	492.1	480.2
138	498.2	486.3
139	504.4	492.6
140	510.7	498.8
141	517.1	505.2
142	523.5	511.6
143	529.9	518.1
144	536.4	524.6
145	543.0	531.3
146	549.6	537.9
147	556.3	544.7
148	563.1	551.5
149	569.9	558.4
150	576.8	565.4

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-454B PT Chart

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

refrigerantptchart.com

°C	Liquid	Vapor
-40	65.6	57.8
-39	73.3	65.2
-38	81.3	72.8
-37	89.5	80.7
-36	98.1	88.9
-35	106.9	97.3
-34	116.0	106.1
-33	125.4	115.1
-32	135.2	124.4
-31	145.2	134.1
-30	155.6	144.1
-29	166.4	154.3
-28	177.4	165.0
-27	188.9	175.9
-26	200.7	187.2
-25	212.8	198.9
-24	225.3	210.9
-23	238.2	223.3
-22	251.5	236.1
-21	265.2	249.2
-20	279.3	262.8
-19	293.8	276.7
-18	308.8	291.1
-17	324.1	305.8
-16	339.9	321.0
-15	356.2	336.6
-14	372.8	352.7
-13	390.0	369.2
-12	407.6	386.1
-11	425.7	403.5
-10	444.3	421.4
-9	463.4	439.8
-8	482.9	458.6
-7	503.0	478.0
-6	523.6	497.9
-5	544.8	518.2

°C	Liquid	Vapor
-4	566.4	539.1
-3	588.6	560.5
-2	611.4	582.5
-1	634.7	605.0
0	658.6	628.1
1	683.1	651.7
2	708.2	676.0
3	733.9	700.8
4	760.1	726.2
5	787.0	752.2
6	814.6	778.8
7	842.7	806.0
8	871.5	833.9
9	901.0	862.4
10	931.1	891.6
11	961.9	921.4
12	993.4	951.9
13	1025.6	983.1
14	1058.5	1015.0
15	1092.1	1047.6
16	1126.4	1080.9
17	1161.4	1115.0
18	1197.2	1149.7
19	1233.8	1185.2
20	1271.1	1221.5
21	1309.2	1258.5
22	1348.0	1296.4
23	1387.7	1335.0
24	1428.2	1374.4
25	1469.5	1414.6
26	1511.6	1455.7
27	1554.5	1497.5
28	1598.3	1540.3
29	1643.0	1583.9
30	1688.5	1628.3
31	1735.0	1673.7

°C	Liquid	Vapor
32	1782.3	1720.0
33	1830.5	1767.1
34	1879.6	1815.2
35	1929.7	1864.2
36	1980.7	1914.2
37	2032.7	1965.1
38	2085.6	2017.1
39	2139.5	2070.0
40	2194.4	2123.9
41	2250.3	2178.8
42	2307.2	2234.8
43	2365.2	2291.8
44	2424.1	2349.9
45	2484.2	2409.1
46	2545.3	2469.4
47	2607.5	2530.8
48	2670.8	2593.3
49	2735.2	2657.0
50	2800.7	2721.9
51	2867.4	2787.9
52	2935.2	2855.2
53	3004.2	2923.7
54	3074.4	2993.4
55	3145.8	3064.4
56	3218.4	3136.7
57	3292.2	3210.3
58	3367.3	3285.3
59	3443.7	3361.6
60	3521.3	3439.4
61	3600.3	3518.6
62	3680.5	3599.2
63	3762.2	3681.3
64	3845.2	3765.0
65	3929.6	3850.2

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-454B chart

This R-454B 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 and supplier charts (Chemours, Arkema, A-Gas). Reference only: always verify with the manufacturer’s data and your gauges.

Honeywell-branded R-454B charts may read up to about 1.5 psi higher at condensing pressures; this chart follows Chemours, Arkema and A-Gas.

FAQ

What is the R-454B pressure at 40 °F?

107.0 psig vapor (dew) and 112.0 psig liquid (bubble) at saturation, from the table above.

What is the R-454B pressure at 100 °F?

290.9 psig vapor (dew) and 300.8 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-454B has 2.34 °F of glide at a 40 °F evaporator, so the two columns differ.

R-454B PT Chart

PT lookup

R-454B pressure temperature table

How to use

About this R-454B chart

FAQ

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