Le R404A est un mélange zéotropique des fluides frigorigènes suivant :
Voici le tableau de relation entre la température et la pression.
| Temp. (°C) | Pression (bar) | Temp. (°C) | Pression (bar) | Temp. (°C) | Pression (bar) | Temp. (°C) | Pression (bar) | Temp. (°C) | Pression (bar) |
|---|---|---|---|---|---|---|---|---|---|
| -40 | 1,330 | -20 | 3,027 | 0 | 6,028 | 20 | 10,864 | 40 | 18,157 |
| -39 | 1,391 | -19 | 3,142 | 1 | 6,222 | 21 | 11,165 | 41 | 18,599 |
| -38 | 1,454 | -18 | 3,260 | 2 | 6,420 | 22 | 11,472 | 42 | 19,049 |
| -37 | 1,520 | -17 | 3,382 | 3 | 6,622 | 23 | 11,785 | 43 | 19,507 |
| -36 | 1,587 | -16 | 3,507 | 4 | 6,830 | 24 | 12,104 | 44 | 19,974 |
| -35 | 1,658 | -15 | 3,635 | 5 | 7,043 | 25 | 12,430 | 45 | 20,449 |
| -34 | 1,730 | -14 | 3,767 | 6 | 7,260 | 26 | 12,763 | 46 | 20,932 |
| -33 | 1,805 | -13 | 3,903 | 7 | 7,482 | 27 | 13,102 | 47 | 21,424 |
| -32 | 1,882 | -12 | 4,043 | 8 | 7,710 | 28 | 13,448 | 48 | 21,925 |
| -31 | 1,962 | -11 | 4,186 | 9 | 7,943 | 29 | 13,801 | 49 | 22,435 |
| -30 | 2,045 | -10 | 4,333 | 10 | 8,180 | 30 | 14,106 | 50 | 22,953 |
| -29 | 2,130 | -9 | 4,484 | 11 | 8,424 | 31 | 14,527 | 51 | 23,481 |
| -28 | 2,218 | -8 | 4,639 | 12 | 8,672 | 32 | 14,900 | 52 | 24,018 |
| -27 | 2,309 | -7 | 4,798 | 13 | 8,926 | 33 | 15,281 | 53 | 24,564 |
| -26 | 2,402 | -6 | 4,961 | 14 | 9,186 | 34 | 15,669 | 54 | 25,120 |
| -25 | 2,499 | -5 | 5,128 | 15 | 9,451 | 35 | 16,065 | 55 | 25,685 |
| -24 | 2,598 | -4 | 5,299 | 16 | 9,722 | 36 | 16,468 | 56 | 26,260 |
| -23 | 2,701 | -3 | 5,475 | 17 | 9,999 | 37 | 16,879 | 57 | 26,845 |
| -22 | 2,806 | -2 | 5,655 | 18 | 10,281 | 38 | 17,297 | 58 | 27,440 |
| -21 | 2,915 | -1 | 5,839 | 19 | 10,570 | 39 | 17,723 | 59 | 28,045 |
| - | - | - | - | - | - | - | - | 60 | 28,660 |