Equipment Failure Rates: Air Handling Unit
H05-110A to H05-310
Equipment failure rates, MTBF, MTTR, and downtime statistics for electrical and mechanical plant equipment. Primary data from the USACE PREP reliability database (IEEE Std 3006.8-2018 Table 2), covering ~280 equipment classes. Supplemental data from IEEE motor and transformer surveys.
| equipment type | class code | description | failure rate per year (failures/year) | failures (count) | mdt hours (h) | mtbf hours (h) | mttm hours (h) | mttr hours (h) | standard | survey | unit years (unit-years) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Air Handling Unit | H05-110A | Air handling unit, humid, pan | 0.027696 | 0 | 0 | 429,882 | 0 | 0 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 25 |
| Air Handling Unit | H05-120A | Air handling unit, humid, spray | 0.018205 | 0 | 0 | 653,976 | 0 | 0 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 38.1 |
| Air Handling Unit | H05-130 | Air handling unit, humid, pan | 0.140976 | 30 | 2.94 | 62,138 | 2.73 | 3.02 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 212.8 |
| Air Handling Unit | H05-140 | Air handling unit, humid, spray | 0.368256 | 38 | 4.31 | 23,788 | 1.59 | 2.27 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 103.2 |
| Air Handling Unit | H05-210 | Air handling unit, non-humid, | 0.221709 | 1,734 | 2.4 | 39,511 | 1.88 | 4.95 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 7,821.1 |
| Air Handling Unit | H05-220 | Air handling unit, non-humid, | 0.139381 | 400 | 2.36 | 62,849 | 1.51 | 4.18 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 2,869.8 |
| Air Handling Unit | H05-310 | Air handling unit, multizone | 0.405892 | 448 | 9.97 | 21,582 | 4.34 | 6.18 | IEEE Std 3006.8-2018 Table 2 | USACE PREP | 1,103.7 |
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