JOHNSON CONTROLS
306
FORM 201.23-NM2 
ISSUE DATE: 09/25/2020
SECTION 9 - MAINTENANCE
R-134a CONVERSION TABLES
The following table can be used for converting R-134a 
pressures to their equivalent saturated temperatures.
TABLE 34 - R-134a PRESSURE TO SATURATED TEMPERATURE CONVERSION
PRESSURE  
PSIG (BAR)
DEW POINT  
TEMP. ºF (ºC)
PRESSURE 
PSIG (BAR)
DEW POINT  
TEMP. ºF (ºC)
PRESSURE 
PSIG (BAR)
DEW POINT  
TEMP. ºF (ºC)
0.0 (0) -14.9 (-26.1) 135.0 (9.31) 105.0 (40.6) 270.0 (18.62) 152.0 (66.7)
5.0 (.34) -3.0 (-19.4) 140.0 (9.65) 107.2 (41.8) 275.0 (18.96) 153.4 (67.4)
10.0 (.69) 6.7 (-14.1) 145.0 (10.0) 109.4 (43) 280.0 (19.31) 154.7 (68.2)
15.0 (1.03) 14.9 (-9.5) 150.0 (10.34) 111.5 (44.2) 285.0 (19.65) 156.1 (68.9)
20.0 (1.38) 22.2 (-5.4) 155.0 (10.69) 113.6 (45.3) 290.0 (19.99) 157.4 (69.7)
25.0 (1.72) 28.7 (-1.8) 160.0 (11.03) 115.6 (46.4) 295.0 (20.34) 158.7 (70.4)
30.0 (2.07) 34.6 (1.4) 165.0 (11.38) 117.6 (47.6) 300.0 (20.68) 160.0 (71.1)
35.0 (2.41) 40.0 (4.4 ) 170.0 (11.72) 119.6 (48.7) 305.0 (21.03) 161.3 (71.8)
40.0 (2.76) 45.0 (7.2) 175.0 (12.07) 121.5 (49.7) 310.0 (21.37) 162.5 (72.5)
45.0 (3.10) 49.6 (9.8) 180.0 (12.41) 123.3 (50.7) 315.0 (21.72) 163.8 (73.2)
50.0 (3.45) 54.0 ( 12.2) 185.0 (12.76) 125.2 (51.8) 320.0 (22.06) 165.0 (73.9)
55.0 (3.79) 58.1 (14.5) 190.0 (13.10) 126.9 (52.7) 325.0 (22.41) 166.2 (74.6)
60.0 (4.14) 62.0 (16.7) 195.0 (13.44) 128.7 (53.7) 330.0 (22.75) 167.4 (75.2)
65.0 (4.48) 65.7 (18.7) 200.0 (13.79) 130.4 (54.7) 335.0 (23.10) 168.6 (75.9)
70.0 (4.83) 69.2 (20.7) 205.0 (14.13) 132.1 (55.6) 340.0 (23.44) 169.8 (76.6)
75.0 (5.17) 72.6 (22.6) 210.0 (14.48) 133.8 (56.6) 345.0 (23.79) 171.0 (77.2)
80.0 (5.52) 75.9 (24.4) 215.0 (14.82) 135.5 (57.5) 350.0 (24.13) 172.1 (77.8)
85.0 (5.86) 79.0 (26.1) 220.0 (15.17) 137.1 (58.4) 355.0 (24.48) 173.3 (78.5)
90.0 (6.21) 82.0 (27.8) 225.0 (15.51) 138.7 (59.3) 360.0 (24.82) 174.4 (79.1)
95.0 (6.55) 84.9 (29.4) 230.0 (15.86) 140.2 (60.1) 365.0 (25.17) 175.5 (79.7)
100.0 (6.89) 87.7 (30.9) 235.0 (16.20) 141.8 (61) 370.0 (25.51) 176.6 (80.3)
105.0 (7.24) 90.4 (32.4) 240.0 (16.55) 143.3 (61.8) 375.0 (25.86) 177.7 (80.9)
110.0 (7.58) 93.0 (33.9) 245.0 (16.89) 144.8 (62.3) 380.0 (26.20) 178.8 (81.6)
115.0 (7.93) 95.5 (35.3) 250.0 (17.24) 146.3 (63.5) 385.0 (26.54) 179.9 (82.2)
120.0 (8.27) 98.0 (36.7) 255.0 (17.58) 147.7 (64.3) 390.0 (26.89) 180.9 (82.7)
125.0 (8.62) 100.4 (38) 260.0 (17.93) 149.2 (65.1) 395.0 (27.23) 182.0 (83.3)
130.0 (8.96) 102.7 (39.3) 265.0 (18.27) 150.6 (65.9) 400.0 (27.58) 183.0 (83.9)