A/C Refrigerant Pressure Chart

Pressures shown in the charts are provided as a general guide and may not represent your exact readings.

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TEMPERATURE

R12       emzone 12a 134a
      Bubble Dew  
C F psi psi psi psi
-40 -40 -5 -4   -7
-38 -36 -4 -3   -6
-36 -33 -3 -2   -6
-34 -29 -2 -1   -4
-32 -26 -1 0 -5 -3
-30 -22 0 1 -4 -2
-28 -18 1 3 -3 -1
-26 -15 3 4 -2 1
-24 -11 4 6 -1 2
-22 -8 6 7 1 4
-20 -4 7 9 2 6
-18 0 9 11 3 7
-16 3 11 12 5 9
-14 7 13 14 6 10
-12 10 15 16 8 13
-10 14 17 19 10 15
-8 18 20 21 12 17
-6 21 22 23 14 20
-4 25 25 26 16 22
-2 28 28 28 18 25
0 32 30 31 20 28
2 36 33 34 23 31
4 39 37 37 25 33
6 43 40 41 28 37
8 46 43 44 31 41
10 50 47 48 34 46
12 54 51 51 37 50
14 57 55 55 40 54
16 61 59 59 44 59
18 64 64 63 47 64
20 68 68 68 51 68
22 72 73 72 55 74
24 75 78 77 59 79
26 79 83 82 64 85
28 82 88 87 68 91
30 86 94 92 73 97
32 90 100 98 78 104
34 93 106 104 83 111
36 97 112 109 88 118
38 100 119 115 93 126
40 104 125 122 99 133
42 108 132 129 105 142
44 111 140 135 111 150
46 115 147 142 118 159
48 118 155 150 124 168
50 122 163 157 131 177
52 126 171 165 134 188
54 129 180 173 138 198
56 133 189 181 142 208