Uniformat D3050

Ductless mini-split heat pump

A ductless mini-split heat pump lasts about 15.3 years, as stated by the one published source on file.

Also listed as mini split, ductless split, DMS

• Confidence C
• Version 0.4.0 (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

One source. This value rests on a single document (Updated Buildings Sector Appliance and Equipment Costs and Efficiencies (March 2023), Appendix A: EIA - Technology Forecast Updates - Residential and Commercial Building Technologies - Reference Case (Guidehouse and Leidos, March 3, 2023), p47). Treat it as that source's figure, not a settled life, until others confirm it.

Basis

• 15.3 years · Updated Buildings Sector Appliance and Equipment Costs and Efficiencies (March 2023), Appendix A: EIA - Technology Forecast Updates - Residential and Commercial Building Technologies - Reference Case (Guidehouse and Leidos, March 3, 2023), p47 · Residential Ductless Mini-Split Air-Source Heat Pumps “Average Life (y) 15.3 (all years, typical and high efficiency); note 2: "Assumed same lifespan and maintenance cost as air-source heat pumps given the technology is similar between air-source and ductless mini-split heat pumps, and ductwork itself is not expected to fail."” — U.S. Energy Information Administration; Appendix A prepared by Guidehouse and Leidos (planning life)
  Printed page 43 (Appendix A). Residential 12 kBtu/h ductless mini-split heat pump. Weibull (15.88, 2, 1). Data-source sheet (PDF p.197, A-17) gives the life source as 'CACs and HPs EERE 2016 Direct Final Rule'; the transfer of that ducted-heat-pump life to mini-splits is the contractor's assumption. Light-commercial use is not stated.

How sources are chosen and recorded: sourcing policy.

Preventive maintenance

No maintenance tasks are sourced for this component yet.

Open questions

• Every source here is a published planning, design or accounting life. None is observed replacement data.
• No preventive maintenance tasks are sourced yet.

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

Cite this

Citation

unfinished.one (2026). Ductless mini-split heat pump, v0.4.0. https://unfinished.one/c/ductless-split/v/0.4.0

BibTeX

@misc{unfinished_ductless_split_0_4_0,
  title = {Ductless mini-split heat pump},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.4.0},
  url = {https://unfinished.one/c/ductless-split/v/0.4.0},
  note = {CC BY 4.0}
}

Licence CC BY 4.0 · How to cite · JSON · Versions: 0.4.0, 0.2.0, 0.1.0