R-22 PT Chart

R-22 saturation pressure, −40 to 150 °F−40 to 65 °C. Used in older A/C, heat pump and refrigeration systems.

How to use ↓

Safety class A1Single component (HCFC)No glideNo glide

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-22 pressure temperature table

Highlighted: 40 °F and 100 °F.Negative kPa = vacuum. Highlighted: 4 °C and 38 °C.

R-22 saturation pressure by temperature, °F and psig (vacuum in inches of mercury)
°F	Pressure psig
-40	0.6
-39	1.0
-38	1.4
-37	1.8
-36	2.2
-35	2.6
-34	3.1
-33	3.5
-32	4.0
-31	4.5
-30	4.9
-29	5.4
-28	5.9
-27	6.4
-26	6.9
-25	7.4
-24	8.0
-23	8.5
-22	9.1
-21	9.6
-20	10.2
-19	10.8
-18	11.4
-17	12.0
-16	12.6
-15	13.2
-14	13.9
-13	14.5
-12	15.2
-11	15.9
-10	16.5
-9	17.2
-8	17.9
-7	18.7
-6	19.4
-5	20.1
-4	20.9
-3	21.7
-2	22.4
-1	23.2
0	24.0
1	24.9
2	25.7
3	26.5
4	27.4
5	28.3
6	29.2
7	30.1
8	31.0
9	31.9
10	32.8
11	33.8
12	34.8
13	35.8
14	36.8
15	37.8
16	38.8
17	39.9
18	40.9
19	42.0
20	43.1
21	44.2
22	45.3
23	46.5
24	47.6
25	48.8
26	50.0
27	51.2
28	52.4
29	53.7
30	55.0
31	56.2
32	57.5
33	58.8
34	60.2
35	61.5
36	62.9
37	64.3
38	65.7
39	67.1
40	68.6
41	70.0
42	71.5
43	73.0
44	74.5
45	76.1
46	77.6
47	79.2
48	80.8
49	82.4
50	84.1
51	85.7
52	87.4
53	89.1
54	90.8
55	92.6
56	94.4
57	96.1
58	98.0
59	99.8
60	101.6
61	103.5
62	105.4
63	107.3
64	109.3
65	111.2
66	113.2
67	115.3
68	117.3
69	119.4
70	121.4
71	123.5
72	125.7
73	127.8
74	130.0
75	132.2
76	134.5
77	136.7
78	139.0
79	141.3
80	143.6
81	146.0
82	148.4
83	150.8
84	153.2
85	155.7
86	158.2
87	160.7
88	163.2
89	165.8
90	168.4
91	171.0
92	173.7
93	176.4
94	179.1
95	181.8
96	184.6
97	187.4
98	190.2
99	193.0
100	195.9
101	198.8
102	201.8
103	204.7
104	207.7
105	210.8
106	213.8
107	216.9
108	220.0
109	223.2
110	226.4
111	229.6
112	232.8
113	236.1
114	239.4
115	242.8
116	246.1
117	249.5
118	253.0
119	256.4
120	260.0
121	263.5
122	267.1
123	270.7
124	274.3
125	278.0
126	281.7
127	285.4
128	289.2
129	293.0
130	296.9
131	300.8
132	304.7
133	308.6
134	312.6
135	316.7
136	320.7
137	324.8
138	329.0
139	333.2
140	337.4
141	341.6
142	345.9
143	350.3
144	354.6
145	359.0
146	363.5
147	368.0
148	372.5
149	377.1
150	381.7

R-22 saturation pressure by temperature, °C and kPa (negative = vacuum)
°C	Pressure kPa
-40	3.9
-39	8.9
-38	14.1
-37	19.4
-36	25.0
-35	30.7
-34	36.6
-33	42.8
-32	49.2
-31	55.8
-30	62.6
-29	69.6
-28	76.9
-27	84.4
-26	92.1
-25	100.1
-24	108.4
-23	116.9
-22	125.6
-21	134.7
-20	144.0
-19	153.6
-18	163.5
-17	173.6
-16	184.1
-15	194.9
-14	206.0
-13	217.3
-12	229.1
-11	241.1
-10	253.5
-9	266.2
-8	279.2
-7	292.6
-6	306.4
-5	320.5
-4	335.0
-3	349.8
-2	365.0
-1	380.7
0	396.7
1	413.1
2	429.9
3	447.1
4	464.7
5	482.8
6	501.3
7	520.2
8	539.6
9	559.4
10	579.6
11	600.3
12	621.5
13	643.2
14	665.4
15	688.0
16	711.1
17	734.7
18	758.9
19	783.5
20	808.7
21	834.4
22	860.6
23	887.4
24	914.7
25	942.6
26	971.0
27	1000.0
28	1029.6
29	1059.8
30	1090.6
31	1121.9
32	1153.9
33	1186.4
34	1219.6
35	1253.5
36	1287.9
37	1323.0
38	1358.8
39	1395.2
40	1432.3
41	1470.0
42	1508.4
43	1547.5
44	1587.4
45	1627.9
46	1669.1
47	1711.1
48	1753.8
49	1797.2
50	1841.4
51	1886.3
52	1932.0
53	1978.5
54	2025.7
55	2073.7
56	2122.6
57	2172.2
58	2222.7
59	2274.0
60	2326.2
61	2379.2
62	2433.0
63	2487.7
64	2543.3
65	2599.8

Back to the lookup ↑

R-22 PT Chart

°F / psig · Safety class A1 · Single component (HCFC)

refrigerantptchart.com

°F	psig
-40	0.6
-39	1.0
-38	1.4
-37	1.8
-36	2.2
-35	2.6
-34	3.1
-33	3.5
-32	4.0
-31	4.5
-30	4.9
-29	5.4
-28	5.9
-27	6.4
-26	6.9
-25	7.4
-24	8.0
-23	8.5
-22	9.1
-21	9.6
-20	10.2
-19	10.8
-18	11.4
-17	12.0
-16	12.6
-15	13.2
-14	13.9
-13	14.5
-12	15.2
-11	15.9
-10	16.5
-9	17.2
-8	17.9
-7	18.7
-6	19.4
-5	20.1
-4	20.9
-3	21.7
-2	22.4
-1	23.2
0	24.0
1	24.9
2	25.7
3	26.5
4	27.4
5	28.3
6	29.2
7	30.1

°F	psig
8	31.0
9	31.9
10	32.8
11	33.8
12	34.8
13	35.8
14	36.8
15	37.8
16	38.8
17	39.9
18	40.9
19	42.0
20	43.1
21	44.2
22	45.3
23	46.5
24	47.6
25	48.8
26	50.0
27	51.2
28	52.4
29	53.7
30	55.0
31	56.2
32	57.5
33	58.8
34	60.2
35	61.5
36	62.9
37	64.3
38	65.7
39	67.1
40	68.6
41	70.0
42	71.5
43	73.0
44	74.5
45	76.1
46	77.6
47	79.2
48	80.8
49	82.4
50	84.1
51	85.7
52	87.4
53	89.1
54	90.8
55	92.6

°F	psig
56	94.4
57	96.1
58	98.0
59	99.8
60	101.6
61	103.5
62	105.4
63	107.3
64	109.3
65	111.2
66	113.2
67	115.3
68	117.3
69	119.4
70	121.4
71	123.5
72	125.7
73	127.8
74	130.0
75	132.2
76	134.5
77	136.7
78	139.0
79	141.3
80	143.6
81	146.0
82	148.4
83	150.8
84	153.2
85	155.7
86	158.2
87	160.7
88	163.2
89	165.8
90	168.4
91	171.0
92	173.7
93	176.4
94	179.1
95	181.8
96	184.6
97	187.4
98	190.2
99	193.0
100	195.9
101	198.8
102	201.8
103	204.7

°F	psig
104	207.7
105	210.8
106	213.8
107	216.9
108	220.0
109	223.2
110	226.4
111	229.6
112	232.8
113	236.1
114	239.4
115	242.8
116	246.1
117	249.5
118	253.0
119	256.4
120	260.0
121	263.5
122	267.1
123	270.7
124	274.3
125	278.0
126	281.7
127	285.4
128	289.2
129	293.0
130	296.9
131	300.8
132	304.7
133	308.6
134	312.6
135	316.7
136	320.7
137	324.8
138	329.0
139	333.2
140	337.4
141	341.6
142	345.9
143	350.3
144	354.6
145	359.0
146	363.5
147	368.0
148	372.5
149	377.1
150	381.7

Bold rows: 40 °F and 100 °F. Reference only: always verify with the manufacturer’s data and your gauges.

R-22 PT Chart

°C / kPa (gauge) · Safety class A1 · Single component (HCFC)

refrigerantptchart.com

°C	kPa
-40	3.9
-39	8.9
-38	14.1
-37	19.4
-36	25.0
-35	30.7
-34	36.6
-33	42.8
-32	49.2
-31	55.8
-30	62.6
-29	69.6
-28	76.9
-27	84.4
-26	92.1
-25	100.1
-24	108.4
-23	116.9
-22	125.6
-21	134.7
-20	144.0
-19	153.6
-18	163.5
-17	173.6
-16	184.1
-15	194.9
-14	206.0
-13	217.3
-12	229.1
-11	241.1
-10	253.5
-9	266.2
-8	279.2
-7	292.6
-6	306.4
-5	320.5

°C	kPa
-4	335.0
-3	349.8
-2	365.0
-1	380.7
0	396.7
1	413.1
2	429.9
3	447.1
4	464.7
5	482.8
6	501.3
7	520.2
8	539.6
9	559.4
10	579.6
11	600.3
12	621.5
13	643.2
14	665.4
15	688.0
16	711.1
17	734.7
18	758.9
19	783.5
20	808.7
21	834.4
22	860.6
23	887.4
24	914.7
25	942.6
26	971.0
27	1000.0
28	1029.6
29	1059.8
30	1090.6
31	1121.9

°C	kPa
32	1153.9
33	1186.4
34	1219.6
35	1253.5
36	1287.9
37	1323.0
38	1358.8
39	1395.2
40	1432.3
41	1470.0
42	1508.4
43	1547.5
44	1587.4
45	1627.9
46	1669.1
47	1711.1
48	1753.8
49	1797.2
50	1841.4
51	1886.3
52	1932.0
53	1978.5
54	2025.7
55	2073.7
56	2122.6
57	2172.2
58	2222.7
59	2274.0
60	2326.2
61	2379.2
62	2433.0
63	2487.7
64	2543.3
65	2599.8

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-22 chart

This R-22 pressure temperature chart gives the saturation pressure for every degree, in psig with °F or kPa (gauge) with °C.

Source: manufacturer and supplier charts (Chemours, Honeywell, Arkema, A-Gas), checked against NIST. Reference only: always verify with the manufacturer’s data and your gauges.

FAQ

What is the R-22 pressure at 40 °F?

68.6 psig at saturation, from the table above.

What is the R-22 pressure at 100 °F?

195.9 psig at saturation.

Does R-22 have glide?

No. R-22 is a single-component refrigerant, so one saturation pressure works for both superheat and subcooling.

R-22 PT Chart

PT lookup

R-22 pressure temperature table

How to use

About this R-22 chart

FAQ

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