Uniformat D3050

Computer room air conditioner (CRAC)

A computer room air conditioner (CRAC) lasts about 15 years, the median of 2 published sources, which all state 15 years.

Also listed as Computer room air conditioner, CRAC, server room AC

• Confidence C
• Version 0.3.0 (permanent link)
• Reviewed 2026-10-23

Service life

Years in service. One stated life so far; the band will widen as sources are added.

Work out when yours is due for replacement

Basis

• 15 years · Energy Conservation Program for Certain Industrial Equipment: Energy Conservation Standards and Test Procedures for Commercial Heating, Air-Conditioning, and Water-Heating Equipment (final rule), 77 FR 28928, May 16, 2012, p31 · LCC inputs, g. Equipment Lifetime “"DOE used a distribution of lifetimes between 10 and 25 years, with an average of 15 years"; Table V.7 (PDF p.29, printed 28956): "DOE estimated CRAC equipment lifetime ranged between 10 and 25 years, with an average lifespan of 15 years"” — U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy (planning life)
  Printed page 28958. Direct match: all computer room air conditioner classes (the literature did not distinguish classes). The distribution spans 10 to 25 years.
• 15 years · Energy Conservation Standards for Computer Room Air Conditioners and Air-Cooled, Three-Phase, Small Commercial Package Air Conditioning and Heating Equipment (notification of data availability and RFI), 85 FR 60642, September 25, 2020, p30 · III.D.1 “Equipment Lifetime: "DOE used a 15-year lifetime for all CRAC equipment classes"” — U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy (planning life)
  Printed page 60671. Direct match: all computer room air conditioner classes.

How sources are chosen and recorded: sourcing policy.

Preventive maintenance

23 tasks in 4 work orders. Intervals that fall due together are one visit: the annual visit also covers the monthly, quarterly and every 4 months tasks.

1. 1Monthly
2. 2Monthly
3. 3Qtr
4. 4Every 4 months
5. 5Monthly
6. 6Qtr
7. 7Monthly
8. 8Every 4 months
9. 9Qtr
10. 10Monthly
11. 11Monthly
12. 12Annual

Months from the schedule start. Download the tasks as CSV for a CMMS, or ask the MCP tool get_pm_schedule for dated visits.

Frequencies are ISO 8601 durations in the data (P3M = every 3 months).

Open questions

• Every source here is a published planning, design or accounting life. None is observed replacement data.
• Some maintenance intervals come from TM 5-692-1, an Army manual for mission-critical (C4ISR) facilities; they may be tighter than typical commercial practice.

Know the answer? Send it with a source to [email protected].

Cite this

Citation

unfinished.one (2026). Computer room air conditioner, v0.3.0. https://unfinished.one/c/crac-unit/v/0.3.0

BibTeX

@misc{unfinished_crac_unit_0_3_0,
  title = {Computer room air conditioner},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.3.0},
  url = {https://unfinished.one/c/crac-unit/v/0.3.0},
  note = {CC BY 4.0}
}

Licence CC BY 4.0 · How to cite · JSON · Versions: 0.3.0, 0.2.0, 0.1.0