Table
20 through 75 Ton Component Static Pressure Drops (Inches W.C.)
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| Evaporator Coil |
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| Heating System |
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| Filters |
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| Econ. |
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| CFM |
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| High |
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| Throwaway Perm | Bag | Cartridge |
| Std | With Or | |||||
Nom | STD | Std. | Capacity | SFHF/G | SEHF/G | SLHF/G |
| SSHF/G | Std. High | Wire | And | And |
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| Roof Without | |||||||||||||
Tons | AIR | Wet Dry | Wet | Dry | Low High | All KW's | Low High |
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| Low High |
| Fiber Effic. Mesh Prefilter Prefilter | Curb Exh. Fan | |||||||||||||||
| 4,000 | .07 | .05 | .14 | .10 | .02 | N/A | .02 |
| .05 | .06 |
| .02 | .06 |
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| .03 | .03 | .01 | .3 | .24 |
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| .01 | .03 |
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| 6,000 | .13 | .10 | .27 | .20 | .05 | .05 | .04 |
| .09 | .12 |
| .05 | .12 |
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| .06 | .06 | .02 | .5 | .44 |
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| .02 | .06 |
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20 | 8,000 | .21 | .16 | .43 | .32 | .09 | .09 | .07 |
| .15 | .19 |
| .10 | .20 |
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| .09 | .09 | .03 | .71 | .68 |
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| .05 | .12 |
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| 9,000 | .26 | .20 | .52 | .39 | .12 | .12 | .09 |
| .19 | .24 |
| .12 | .22 |
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| .11 | .11 | .04 | .83 | .81 |
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| .07 | .15 |
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| 10,000 | .31 | .23 | .61 | .46 | .14 | .15 | .11 |
| .23 | .28 |
| .15 | .29 |
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| .13 | .13 | .05 | .95 | .95 |
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| .10 | .19 |
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| 12,000 | .41 | .31 | .82 | .63 | .20 | .22 | .17 |
| .33 | .40 |
| .22 | .42 |
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| .15 | .15 | .06 | 1.19 | 1.26 |
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| .14 | .27 |
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| 5,000 | .10 | .07 | .20 | .15 | .03 | N/A | .03 |
| .07 | .09 |
| .04 | .09 |
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| .05 | .05 | .02 | .40 | .34 |
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| .01 | .03 |
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| 6,000 | .13 | .10 | .27 | .20 | .50 |
| .44 |
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| 7,500 | .19 | .15 | .39 | .29 | .08 | .08 | .06 |
| .14 | .17 |
| .09 | .18 |
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| .09 | .09 | .03 | .66 | .62 |
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| .04 | .10 |
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25 | 10,000 | .31 | .23 | .61 | .46 | .14 | .15 | .11 |
| .23 | .28 |
| .15 | .29 |
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| .13 | .13 | .05 | .95 | .95 |
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| .10 | .19 |
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| 11,000 | .36 | .27 | .71 | .54 | .17 | .18 | .13 |
| .29 | .33 |
| .19 | .35 |
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| .15 | .15 | .06 | 1.06 | 1.11 |
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| .12 | .23 |
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| 12,500 | .44 | .34 | .87 | .67 | .22 | .23 | .18 |
| .33 | .42 |
| .24 | .42 |
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| .19 | .19 | .08 | 1.29 | 1.34 |
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| .19 | .30 |
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| 14,000 | .52 | .40 | 1.05 | .81 | .28 | .29 | .21 |
| .41 | .53 |
| .30 | .53 |
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| .24 | .24 | .10 | .24 |
| .39 |
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| 6,000 | .15 | .11 | .20 | .15 | .05 | .05 | .04 |
| .09 | .12 |
| .05 | .12 |
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| .04 | .04 | .01 | .34 | .26 |
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| .02 | .06 |
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| 9,000 | .29 | .22 | .39 | .29 | .11 | .12 | .09 |
| .19 | .24 |
| .12 | .22 |
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| .07 | .17 | .02 | .54 | .48 |
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| .07 | .15 |
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30 | 12,000 | .46 | .35 | .61 | .46 | .20 | .21 | .16 |
| .31 | .39 |
| .22 | .41 |
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| .11 | .11 | .04 | .75 | .75 |
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| .16 | .27 |
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| 14,000 | .59 | .45 | .78 | .60 | .26 | .29 | .22 |
| .40 | .51 |
| .30 | .50 |
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| .14 | .14 | .06 | .95 | .95 |
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| .25 | .39 |
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| 15,000 | .65 | .50 | .87 | .67 | .30 | .33 | .25 |
| .45 | .57 |
| .33 | .52 |
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| .16 | .16 | .07 | 1.03 | 1.06 |
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| .30 | .43 |
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| 17,000 | .80 | .62 | 1.06 | .82 | .39 | .42 | .35 |
| .58 | .73 |
| .42 | .67 |
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| .21 | .21 | .09 | 1.20 | 1.30 |
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| .39 | .59 |
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| 8,000 | .10 | .07 | .20 | .15 | .09 | N/A | .07 |
| .09 | .11 |
| .05 | .11 |
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| .04 | .04 | .02 | .37 | .31 |
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| .01 | .03 |
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| 10,000 | .14 | .11 | .29 | .21 |
| .49 |
| .43 |
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| 12,000 | .19 | .14 | .39 | .29 | .20 | .15 | .16 |
| .17 | .22 |
| .11 | .21 |
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| .08 | .08 | .03 | .61 | .56 |
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| .04 | .07 |
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40 | 16,000 | .31 | .23 | .61 | .46 | .34 | .26 | .29 |
| .28 | .36 |
| .20 | .36 |
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| .12 | .12 | .05 | .88 | .87 |
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| .10 | .09 |
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| 17,000 | .34 | .26 | .67 | .51 | N/A | .29 | .32 |
| .31 | .39 |
| .22 | .41 |
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| .13 | .13 | .06 | .95 | .95 |
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| .12 | .11 |
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| 20,000 | .44 | .34 | .87 | .67 | N/A | .41 | .44 |
| .42 | .52 |
| .30 | .51 |
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| .17 | .17 | .08 | 1.17 | 1.22 |
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| .19 | .17 |
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| 22,000 | .51 | .39 | 1.02 | .79 | N/A | .50 | .53 |
| .51 | .63 |
| .36 | .62 |
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| .21 | .21 | .10 | .23 |
| .20 |
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| 10,000 | .17 | .13 | .23 | .17 | .12 | .10 | .11 |
| .13 | .16 |
| .07 | .15 |
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| .04 | .04 | .01 | .37 | .30 |
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| .03 | .05 |
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| 14,000 | .29 | .22 | .39 | .29 | .26 | .20 | .22 |
| .22 | .28 |
| .15 | .28 |
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| .07 | .07 | .03 | .56 | .50 |
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| .07 | .08 |
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50/55 17,000 | .39 | .30 | .53 | .40 | .39 | .29 | .32 |
| .31 | .40 |
| .22 | .41 |
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| .10 | .10 | .04 | .72 | .68 |
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| .12 | .11 |
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| 20,000 | .51 | .39 | .68 | .52 | .58 | .41 | .44 |
| .42 | .52 |
| .30 | .51 |
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| .12 | .12 | .05 | .88 | .88 |
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| .19 | .17 |
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| 24,000 | .69 | .53 | .91 | .70 | .73 | .58 | .62 |
| .48 | .72 |
| .45 | .75 |
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| .16 | .16 | .07 | 1.11 | 1.17 |
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| .30 | .23 |
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| 28,000 | .88 | .68 | 1.17 | .91 | .99 | .79 | .84 |
| .62 | .98 |
| .61 | .99 |
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| .20 | .20 | .10 | .39 |
| .30 |
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| 12,000 | .13 | .10 | .25 | .18 | .10 | .08 | .16 |
| .10 | .13 |
| .06 | .11 |
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| .05 | .05 | .01 | .44 | .37 |
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| .02 | .07 |
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| 16,000 | .20 | .16 | .39 | .29 | .18 | .14 | .29 |
| .17 | .21 |
| .11 | .19 |
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| .07 | .07 | .02 | .63 | .58 |
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| .05 | .10 |
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60 | 20,000 | .29 | .23 | .55 | .42 | .27 | .21 | .44 |
| .24 | .31 |
| .16 | .27 |
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| .10 | .10 | .03 | .84 | .82 |
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| .10 | .16 |
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| 24,000 | .39 | .31 | .74 | .57 | .40 | .30 | .62 |
| .33 | .42 |
| .22 | .39 |
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| .11 | .11 | .04 | 1.06 | 1.08 |
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| .16 | .23 |
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| 28,000 | .50 | .39 | .95 | .73 | .48 | .33 | .85 |
| .44 | .55 |
| .32 | .50 |
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| .17 | .17 | .06 | .30 |
| .30 |
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| 30,000 | .56 | .44 | 1.06 | .82 | .62 | .38 | .98 |
| .51 | .63 |
| .37 | .57 |
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| .20 | .20 | .07 | .34 |
| .34 |
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| 12,000 | .20 | .16 | N/A | N/A | .10 | .08 | .16 |
| .10 | .13 |
| .06 | .11 |
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| .05 | .05 | .01 | .44 | .37 |
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| .02 | .07 |
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| 16,000 | .32 | .26 | N/A | N/A | .18 | .14 | .29 |
| .17 | .21 |
| .11 | .19 |
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| .07 | .07 | .02 | .63 | .58 |
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| .05 | .10 |
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| 20,000 | .46 | .37 | N/A | N/A | .27 | .21 | .44 |
| .24 | .31 |
| .16 | .27 |
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| .10 | .10 | .03 | .84 | .82 |
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| .10 | .16 |
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| 22,000 | .54 | .43 | N/A | N/A | .33 | .25 | .53 |
| .29 | .37 |
| .19 | .33 |
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| .12 | .12 | .04 | .95 | .95 |
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| .13 | .20 |
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70 | 24,000 | .62 | .50 | N/A | N/A | .40 | .30 | .62 |
| .33 | .42 |
| .22 | .39 |
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| .14 | .14 | .04 | 1.06 | 1.08 |
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| .16 | .23 |
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| 26,000 | .70 | .56 | N/A | N/A | .47 | .32 | .73 |
| .39 | .49 |
| .27 | .45 |
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| .16 | .16 | .05 | 1.17 | 1.23 |
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| .23 | .26 |
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| 28,000 | .79 | .64 | N/A | N/A | .54 | .33 | .85 |
| .44 | .55 |
| .32 | .50 |
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| .17 | .17 | .06 | 1.22 | 1.29 |
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| .30 | .30 |
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| 31,000 | .93 | .75 | N/A | N/A | .60 | .40 | 1.04 |
| .49 | .61 |
| .39 | .55 |
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| .21 | .21 | .07 | .37 |
| .36 |
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| 33,000 | 1.03 | .83 | N/A | N/A | .65 | .46 | 1.18 |
| .52 | .67 |
| .44 | .60 |
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| .24 | .24 | .08 | .42 |
| .40 |
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| 12,000 | .25 | .18 | .31 | .23 | .10 | .08 | .16 |
| .10 | .13 |
| .06 | .11 |
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| .05 | .05 | .01 | .44 | .37 |
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| .02 | .07 |
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| 16,000 | .39 | .29 | .49 | .37 | .18 | .14 | .29 |
| .17 | .21 |
| .11 | .19 |
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| .07 | .07 | .02 | .63 | .58 |
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| .05 | .10 |
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| 20,000 | .55 | .42 | .69 | .53 | .27 | .21 | .44 |
| .24 | .31 |
| .16 | .27 |
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| .10 | .10 | .03 | .84 | .82 |
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| .10 | .16 |
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| 22,000 | .65 | .49 | .81 | .62 | .33 | .25 | .53 |
| .29 | .37 |
| .19 | .33 |
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| .12 | .12 | .04 | .95 | .95 |
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| .13 | .20 |
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75 | 24,000 | .74 | .57 | .93 | .71 | .40 | .30 | .62 |
| .33 | .42 |
| .22 | .39 |
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| .14 | .14 | .04 | 1.06 | 1.08 |
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| .16 | .23 |
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| 26,000 | .84 | .65 | 1.05 | .81 | .47 | .32 | .73 |
| .39 | .49 |
| .27 | .45 |
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| .16 | .16 | .05 | 1.17 | 1.23 |
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| .23 | .26 |
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| 28,000 | .95 | .73 | 1.19 | .92 | .54 | .33 | .85 |
| .44 | .55 |
| .32 | .50 |
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| .17 | .17 | .06 | 1.22 | 1.29 |
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| .30 | .30 |
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| 31,000 | 1.12 .87 | 1.40 1.08 | .60 | .40 | 1.04 |
| .49 | .61 |
| .39 | .55 |
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| .21 | .21 | .07 | .37 |
| .36 |
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| 33,000 | 1.24 .96 | 1.55 1.20 | .65 | .46 | 1.18 |
| .52 | .67 |
| .44 | .60 |
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| .24 | .24 | .08 | .42 |
| .40 |
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76