Uniformat D3030

Chiller, water-cooled

Also called centrifugal chiller, screw chiller, water cooled chiller

• Confidence C
• Version 0.2.0 (permanent link)
• Reviewed 2026-10-22

This is version 0.2.0. The latest is 0.3.0.

Service life

Years in service. The band runs from the shortest to the longest life the sources state, so it shows how much they disagree, not how long 80% of units last. The line is the median of the stated lives.

Basis

• 20 years · CNA e-Tool Estimated Useful Life Table, p11 · HUD CNA 3.4.2.1.17 “Chilling plant” — U.S. Department of Housing and Urban Development (planning life)
  Same life for family and elderly properties. US multifamily housing. HUD's row is a chilling plant, without the condenser type.
• 23 years · Purchasing Energy-Efficient Electric Chillers (web page, modified 2025-11-12) · Tables 4 and 5 assumptions “Assumed chillers operate for 2,000 hours per year and have a lifetime of 23 years.” — U.S. Department of Energy, Federal Energy Management Program (planning life)
  One assumption for both the 175-ton air-cooled (Table 4) and 300-ton water-cooled centrifugal (Table 5) examples. Source of the value not stated by FEMP.
• 15.5 years · General depreciation rates (IR265), July 2021, p52 · REFR “Chilling/cooling plant (for water)” — Inland Revenue (Te Tari Taake), New Zealand (accounting life)
  Printed page 52. Water chillers, condenser type not stated. Refrigeration category. Printed DV 13%, SL 8.5%. Tax depreciation lives set by the Commissioner of Inland Revenue for New Zealand income tax, not engineering or asset-management lives; they are banded and often short (e.g. reticulation piping 25 years). The July 2021 edition was the newest PDF reachable; the online Depreciation Rate Finder may hold later determinations.

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 semi-annual tasks.

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6Semi
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12Annual

Months from the schedule start. Daily and weekly rounds run in between. 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.

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

Cite this

Citation

unfinished.one (2026). Chiller, water-cooled, v0.2.0. https://unfinished.one/c/chiller-water-cooled/v/0.2.0

BibTeX

@misc{unfinished_chiller_water_cooled_0_2_0,
  title = {Chiller, water-cooled},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.2.0},
  url = {https://unfinished.one/c/chiller-water-cooled/v/0.2.0},
  note = {CC BY 4.0}
}

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