1. Refrigerant Guys PT – Chart R134a Refrigerant Gases https://www.refrigerantguys.com/R134a-refrigerant-p/111012.htm Saturation Pressure-Temperature Data for R-134a (psig)* Temp. Pressure Temp. (°F) (psig) -49 18.4 -48 18.0 -47 17.6 -46 17.3 -45 16.9 -44 16.5 -43 16.1 -42 15.7 -41 15.2 -40 14.8 -39 14.4 -38 13.9 -37 13.4 -36 13.0 -35 12.5 -34 12.0 -33 11.4 -32 10.9 -31 10.4 -30 9.8 -29 9.3 -28 8.7 -27 8.1 -26 7.5 -25 6.9 -24 6.3 -23 5.7 -22 5.0 -21 4.3 -20 3.7 -19 3.0 -18 2.3 -17 1.5 -16 0.8 -15 0.1 -14 0.4 -13 0.7 -12 1.1 -11 1.5 -10 1.9 -9 2.4 -8 2.8 -7 3.2 -6 3.6 -5 4.1 -4 4.6 -3 5.0 -2 5.5 -1 6.0 0 6.5 Temp. Pressure Temp. (°F) (psig) 1 7.0 2 7.5 3 8.0 4 8.5 5 9.1 6 9.6 7 10.2 8 10.8 9 11.3 10 11.9 11 12.5 12 13.1 13 13.8 14 14.4 15 15.0 16 15.7 17 16.4 18 17.0 19 17.7 20 18.4 21 19.1 22 19.9 23 20.6 24 21.3 25 22.1 26 22.9 27 23.7 28 24.5 29 25.3 30 26.1 31 26.9 32 27.8 33 28.6 34 29.5 35 30.4 36 31.3 37 32.2 38 33.1 39 34.1 40 35.0 41 36.0 42 37.0 43 38.0 44 39.0 45 40.1 46 41.1 47 42.2 48 43.2 49 44.3 50 45.4 Temp. Pressure Temp. (°F) (psig) 51 46.6 52 47.7 53 48.9 54 50.0 55 51.2 56 52.4 57 53.6 58 54.9 59 56.1 60 57.4 61 58.7 62 60.0 63 61.3 64 62.7 65 64.0 66 65.4 67 66.8 68 68.2 69 69.7 70 71.1 71 72.6 72 74.1 73 75.6 74 77.1 75 78.7 76 80.2 77 81.8 78 83.4 79 85.0 80 86.7 81 88.4 82 90.0 83 91.8 84 93.5 85 95.2 86 97.0 87 98.8 88 100.6 89 102.5 90 104.3 91 106.2 92 108.1 93 110.0 94 112.0 95 114.0 96 115.9 97 118.0 98 120.0 99 122.1 100 124.2 Temp. Pressure Temp. (°F) (psig) 101 126.3 102 128.4 103 130.6 104 132.8 105 135.0 106 137.2 107 139.5 108 141.7 109 144.0 110 146.4 111 148.7 112 151.1 113 153.5 114 156.0 115 158.4 116 160.9 117 163.5 118 166.0 119 168.6 120 171.2 121 173.8 122 176.5 123 179.1 124 181.8 125 184.6 126 187.4 127 190.2 128 193.0 129 195.8 130 198.7 131 201.6 132 204.6 133 207.6 134 210.6 135 213.6 136 216.7 137 219.8 138 222.9 139 226.0 140 229.2 141 232.5 142 235.7 143 239.0 144 242.3 145 245.7 146 249.1 147 252.5 148 255.9 149 259.4 150 262.9 (°C) (°C) (°C) (°C) -45.0 -44.4 -43.9 -43.3 -42.8 -42.2 -41.7 -41.1 -40.6 -40.0 -39.4 -38.9 -38.3 -37.8 -37.2 -36.7 -36.1 -35.6 -35.0 -34.4 -33.9 -33.3 -32.8 -32.2 -31.7 -31.1 -30.6 -30.0 -29.4 -28.9 -28.3 -27.8 -27.2 -26.7 -26.1 -25.6 -25.0 -24.4 -23.9 -23.3 -22.8 -22.2 -21.7 -21.1 -20.6 -20.0 -19.4 -18.9 -18.3 -17.8 -17.2 -16.7 -16.1 -15.6 -15.0 -14.4 -13.9 -13.3 -12.8 -12.2 -11.7 -11.1 -10.6 -10.0 -9.4 -8.9 -8.3 -7.8 -7.2 -6.7 -6.1 -5.6 -5.0 -4.4 -3.9 -3.3 -2.8 -2.2 -1.7 -1.1 -0.6 0.0 0.6 1.1 1.7 2.2 2.8 3.3 3.9 4.4 5.0 5.6 6.1 6.7 7.2 7.8 8.3 8.9 9.4 10.0 10.6 11.1 11.7 12.2 12.8 13.3 13.9 14.4 15.0 15.6 16.1 16.7 17.2 17.8 18.3 18.9 19.4 20.0 20.6 21.1 21.7 22.2 22.8 23.3 23.9 24.4 25.0 25.6 26.1 26.7 27.2 27.8 28.3 28.9 29.4 30.0 30.6 31.1 31.7 32.2 32.8 33.3 33.9 34.4 35.0 35.6 36.1 36.7 37.2 37.8 38.3 38.9 39.4 40.0 40.6 41.1 41.7 42.2 42.8 43.3 43.9 44.4 45.0 45.6 46.1 46.7 47.2 47.8 48.3 48.9 49.4 50.0 50.6 51.1 51.7 52.2 52.8 53.3 53.9 54.4 55.0 55.6 56.1 56.7 57.2 57.8 58.3 58.9 59.4 60.0 60.6 61.1 61.7 62.2 62.8 63.3 63.9 64.4 65.0 65.6 *Red Italics Indicate Inches of Mercury Below Atmospheric Pressure