HVAC Diagnostic Tool
Select a refrigerant, mode, and enter your measurements. Data is approximate and for demonstration only!
Disclaimer:
1) Cooling mode uses detailed PT data from your normalized chart. Key points are defined at 40°F and 120°F.
2) Heating mode applies a demonstration adjustment: suction saturation temperature is reduced by 15°F (and pressure adjusted) while discharge saturation temperature is increased by 15°F (with discharge pressure increased by 15%).
3) A ±5% tolerance is applied to the key pressures for range checks.
4) Always verify with manufacturer specifications.
1) Cooling mode uses detailed PT data from your normalized chart. Key points are defined at 40°F and 120°F.
2) Heating mode applies a demonstration adjustment: suction saturation temperature is reduced by 15°F (and pressure adjusted) while discharge saturation temperature is increased by 15°F (with discharge pressure increased by 15%).
3) A ±5% tolerance is applied to the key pressures for range checks.
4) Always verify with manufacturer specifications.
| Temp (°F) | R-134A | R-410A | R-32 | R-454B | R-22 | R-427A | R-407C | R-422B | R-438A | R-404A | R-448A | R-449A | R-454C | R-513A |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| -48 | 1.6 | 6 | 6.2 | 4.1 | 4.8 | 10.2 | 9.8 | 10.3 | 10.2 | 1.3 | 6.1 | 6.1 | 0.8 | 15.7 |
| -44 | 1.1 | 8.3 | 8.5 | 6.2 | 1.9 | 7.8 | 7.3 | 8 | 7.9 | 3 | 3.3 | 3.3 | 2.5 | 14.1 |
| -40 | 3.3 | 10.8 | 11 | 8.4 | 0.6 | 5.1 | 4.6 | 5.4 | 5.2 | 4.9 | 0 | 0.2 | 4.3 | 12.3 |
| -36 | 5.6 | 13.4 | 13.7 | 10.8 | 2.2 | 2.2 | 1.6 | 2.6 | 2.1 | 7 | 1.6 | 1.6 | 6.2 | 10 |
| -32 | 8.2 | 16.3 | 16.6 | 13.4 | 4 | 0.5 | 0.8 | 0.2 | 2.4 | 9.2 | 3.4 | 3.4 | 8.4 | 7.8 |
| -28 | 11 | 19.4 | 19.8 | 16.2 | 5.9 | 2.2 | 2.5 | 1.9 | 2.1 | 11.5 | 5.4 | 5.3 | 10.6 | 5.3 |
| -24 | 14.1 | 22.7 | 23.2 | 19.3 | 8 | 4 | 4.4 | 3.7 | 4 | 14.1 | 7.5 | 7.5 | 13.1 | 2.7 |
| -20 | 17.5 | 26.3 | 26.8 | 22.6 | 10.2 | 6 | 6.5 | 5.7 | 5.9 | 16.8 | 9.8 | 9.8 | 15.7 | 0.1 |
| -16 | 21.2 | 30.2 | 30.7 | 26.1 | 12.6 | 8.2 | 8.7 | 7.8 | 8.1 | 19.8 | 13.6 | 12.2 | 18.5 | 1.7 |
| -12 | 25.2 | 34.3 | 34.9 | 29.8 | 15.2 | 10.5 | 11.1 | 10.1 | 10.4 | 22.9 | 16.4 | 14.9 | 21.5 | 3.4 |
| -8 | 29.5 | 38.7 | 39.4 | 33.8 | 17.9 | 13 | 13.7 | 12.5 | 12.9 | 26.3 | 19.4 | 17.8 | 24.7 | 5.2 |
| -4 | 34.2 | 43.4 | 44.1 | 38.1 | 20.9 | 15.7 | 16.4 | 15.2 | 15.6 | 29.8 | 22.6 | 20.8 | 28.1 | 7.1 |
| 0 | 39.3 | 48.4 | 49.2 | 42.7 | 24 | 18.7 | 19.4 | 18 | 18.5 | 33.7 | 24.3 | 24.1 | 31.8 | 9.2 |
| 2 | 44.8 | 51.1 | 51.9 | 45.1 | 25.7 | 20.2 | 21 | 19.5 | 20 | 35.7 | 26 | 25.9 | 33.7 | 10.3 |
| 4 | 50.7 | 53.8 | 54.7 | 47.6 | 27.4 | 21.8 | 22.6 | 21.1 | 21.6 | 37.7 | 27.8 | 27.7 | 35.6 | 11.4 |
| 6 | 57 | 56.6 | 57.5 | 50.1 | 29.2 | 23.4 | 24.3 | 22.7 | 23.2 | 39.8 | 29.7 | 29.5 | 37.7 | 12.6 |
| 8 | 63.7 | 59.5 | 60.5 | 52.7 | 31 | 25.1 | 26.1 | 24.4 | 24.9 | 42 | 31.6 | 31.4 | 39.8 | 13.8 |
| 10 | 71 | 62.4 | 63.5 | 55.4 | 32.8 | 26.9 | 27.9 | 26.1 | 26.6 | 44.3 | 33.6 | 33.4 | 41.9 | 15.1 |
| 12 | 78.7 | 65.5 | 66.6 | 58.2 | 34.8 | 28.7 | 29.8 | 27.8 | 28.4 | 46.6 | 35.7 | 35.5 | 44.1 | 16.4 |
| 14 | 87 | 68.6 | 69.8 | 61.1 | 36.8 | 30.6 | 31.7 | 29.7 | 30.3 | 49 | 37.8 | 37.6 | 46.4 | 17.7 |
| 16 | 95.8 | 71.9 | 73.1 | 64.1 | 38.8 | 32.5 | 33.7 | 31.6 | 32.2 | 51.5 | 40 | 39.8 | 48.7 | 19.1 |
| 18 | 105.1 | 75.2 | 76.5 | 67.1 | 40.9 | 34.5 | 35.7 | 33.5 | 34.2 | 54 | 42.2 | 42 | 51.1 | 20.6 |
| 20 | 115.1 | 78.7 | 80 | 70.3 | 43.1 | 36.6 | 37.9 | 35.5 | 36.2 | 56.6 | 44.6 | 44.3 | 53.6 | 22 |
| 22 | 125.6 | 82.2 | 83.6 | 73.5 | 45.3 | 38.7 | 40.1 | 37.6 | 38.3 | 59.3 | 47 | 46.7 | 56.2 | 23.6 |
| 24 | 136.8 | 85.8 | 87.3 | 76.8 | 47.6 | 40.9 | 42.3 | 39.7 | 40.5 | 62 | 49.4 | 49.2 | 58.8 | 25.1 |
| 26 | 148.7 | 89.6 | 91.1 | 80.3 | 50 | 43.2 | 44.7 | 41.9 | 42.8 | 64.8 | 52 | 51.7 | 61.5 | 26.8 |
| 28 | 161.2 | 93.4 | 95.1 | 83.8 | 52.4 | 45.6 | 47.1 | 44.2 | 45.1 | 67.8 | 54.6 | 54.3 | 64.2 | 28.5 |
| 30 | 174.4 | 97.4 | 99.1 | 87.4 | 55 | 48 | 49.6 | 46.6 | 47.5 | 70.7 | 57.3 | 57 | 67.1 | 30.2 |
| 32 | 188.4 | 101.4 | 103.2 | 91.1 | 57.5 | 50.5 | 52.1 | 49 | 49.9 | 73.8 | 60.1 | 59.8 | 70 | 32 |
| 34 | 203.1 | 105.6 | 107.5 | 94.9 | 60.2 | 53 | 54.8 | 51.5 | 52.5 | 77 | 63 | 62.7 | 73 | 33.8 |
| 36 | 218.7 | 109.9 | 111.9 | 98.8 | 62.9 | 55.7 | 57.5 | 54 | 55.1 | 80.2 | 65.9 | 65.6 | 76 | 35.7 |
| 38 | 235 | 114.3 | 116.3 | 102.9 | 65.7 | 58.4 | 60.3 | 56.7 | 57.7 | 83.5 | 69 | 68.6 | 79.2 | 35.7 |
| 40 | 252.1 | 118.8 | 120.9 | 107 | 68.6 | 61.2 | 63.2 | 59.4 | 60.5 | 86.9 | 72.1 | 71.7 | 82.4 | 39.6 |
| 42 | 270.2 | 123.4 | 125.7 | 111.2 | 71.5 | 64.1 | 66.1 | 62.1 | 63.3 | 90.4 | 75.3 | 74.9 | 85.7 | 41.7 |
| 44 | 289.1 | 128.2 | 130.5 | 115.6 | 74.5 | 67 | 69.2 | 65 | 66.3 | 94 | 78.6 | 78.2 | 89.1 | 43.8 |
| 46 | 308.9 | 133 | 135.5 | 120 | 77.6 | 70.1 | 72.3 | 67.9 | 69.3 | 97.6 | 82 | 81.6 | 92.5 | 46 |
| 48 | 329.7 | 138 | 140.6 | 124.6 | 80.8 | 73.2 | 75.5 | 71 | 72.3 | 101.4 | 85.4 | 85 | 96.1 | 48.2 |
| 50 | 351.5 | 143.2 | 145.8 | 129.3 | 84.1 | 76.4 | 78.8 | 74.1 | 75.5 | 105.3 | 89 | 88.6 | 99.7 | 50.5 |
| 52 | 374.3 | 148.4 | 151.2 | 134.1 | 87.4 | 97.2 | 101.7 | 88.6 | 94.6 | 109.2 | 112.1 | 110.3 | 103.5 | 52.9 |
| 56 | 398.1 | 159.3 | 162.3 | 144.1 | 94.4 | 104.8 | 109.6 | 95.6 | 95.6 | 117.4 | 120.5 | 118.7 | 111.2 | 57.8 |
| 60 | 423 | 170.7 | 174 | 154.6 | 101.6 | 112.8 | 118 | 103 | 103 | 126 | 129.4 | 127.4 | 119.3 | 63 |
| 64 | 423 | 182.7 | 186.3 | 165.6 | 109.3 | 121.1 | 126.7 | 110.7 | 110.8 | 135 | 138.7 | 136.6 | 127.7 | 68.5 |
| 68 | 423 | 195.3 | 199.2 | 177.2 | 117.3 | 129.9 | 135.8 | 118.8 | 119.1 | 144.4 | 148.5 | 146.3 | 136.6 | 74.2 |
| 72 | 423 | 208.4 | 212.6 | 189.3 | 125.7 | 139 | 145.4 | 127.3 | 126.9 | 154.3 | 158.7 | 156.3 | 145.8 | 80.2 |
| 76 | 423 | 222.2 | 226.7 | 201.9 | 134.5 | 148.6 | 155.4 | 136.1 | 135.8 | 164.6 | 169.3 | 166.9 | 155.5 | 86.6 |
| 80 | 423 | 236.5 | 241.5 | 215.2 | 143.6 | 158.6 | 165.8 | 145.4 | 145.4 | 175.4 | 180.5 | 177.9 | 165.6 | 93.2 |
| 84 | 423 | 251.6 | 256.9 | 229 | 153.2 | 169.1 | 176.8 | 155.1 | 155.1 | 186.7 | 192.1 | 189.4 | 176.1 | 100.2 |
| 88 | 423 | 267.3 | 273 | 243.5 | 163.2 | 180.1 | 188.2 | 165.2 | 165.2 | 198.4 | 204.1 | 201.4 | 187 | 107.5 |
| 92 | 423 | 283.6 | 289.8 | 258.6 | 173.7 | 191.5 | 200.1 | 175.2 | 175.7 | 210.7 | 216.8 | 213.9 | 198.4 | 115.2 |
| 96 | 423 | 300.7 | 307.4 | 274.4 | 184.6 | 203.4 | 212.5 | 186.7 | 186.7 | 223.4 | 230 | 226.9 | 210.2 | 123.2 |
| 100 | 423 | 318.7 | 325.7 | 290.9 | 195.9 | 215.8 | 225.5 | 198.2 | 198.2 | 236.8 | 243.7 | 240.5 | 222.5 | 131.6 |
| 104 | 423 | 337.1 | 344.7 | 308 | 207.7 | 228.7 | 239 | 210.2 | 210.2 | 250.6 | 258 | 254.6 | 235.4 | 140.3 |
| 108 | 423 | 356.5 | 364.6 | 326 | 220 | 242.1 | 253 | 222.6 | 222.6 | 265.1 | 272.8 | 269.3 | 248.6 | 149.4 |
| 112 | 423 | 376.6 | 385.3 | 344.6 | 232.8 | 256.1 | 267.6 | 235.6 | 235.6 | 280.1 | 288.3 | 284.6 | 262.4 | 159 |
| 116 | 423 | 397.6 | 406.9 | 364.1 | 246.1 | 270.7 | 282.8 | 249.1 | 249.1 | 295.8 | 304.3 | 300.5 | 276.7 | 168.9 |
| 120 | 423 | 419.4 | 429.3 | 384.3 | 260 | 285.8 | 298.6 | 263.1 | 263.1 | 312.1 | 320.9 | 317 | 291.6 | 179.3 |
| 124 | 423 | 442.1 | 452.7 | 405.4 | 274.3 | 301.5 | 315 | 277.7 | 277.7 | 329 | 338.2 | 334.1 | 306.9 | 190.1 |
| 128 | 423 | 465.8 | 464.7 | 427.4 | 289.2 | 317.8 | 332 | 292.8 | 292.8 | 346.6 | 356.1 | 351.8 | 322.8 | 201.3 |
| 132 | 423 | 490.3 | 502.2 | 450.3 | 304.7 | 334.7 | 349.7 | 308.6 | 308.6 | 364.9 | 374.6 | 370.2 | 339.3 | 213 |
| 136 | 423 | 515.9 | 528.5 | 474.1 | 320.7 | 352.3 | 368 | 324.9 | 324.7 | 383.9 | 393.9 | 389.3 | 356.3 | 225.1 |
| 140 | 423 | 542.5 | 555.8 | 498.8 | 337.4 | 370.5 | 387 | 341.8 | 341.8 | 403.7 | 413.8 | 409.1 | 373.9 | 237.8 |
| 144 | 423 | 570.2 | 584.1 | 524.6 | 354.6 | 389.3 | 406.6 | 359.4 | 360 | 424.3 | 434.4 | 429.6 | 392.1 | 250.9 |
| 148 | 423 | 599 | 613.6 | 551.5 | 372.5 | 408.9 | 427 | 377.7 | 378.1 | 377.7 | 401.5 | 450.8 | 410.9 | 264.6 |