Uniformat D3050
Water-source heat pump
Also called WSHP, geothermal heat pump
Service life
Years in service. One stated life so far; the band will widen as sources are added.
Basis
- 19 years · Energy Conservation Program: Energy Conservation Standards for Water-Source Heat Pumps (request for information), 85 FR 27929, May 12, 2020, p11 · H “equipment lifetime on a retirement function in the form of a Weibull probability distribution, with a mean of 19 years” — U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy (planning life)Printed page 27939. Direct match: commercial water-source heat pumps (water-to-air, under 135,000 Btu/h). Value from the July 2015 final rule, restated in this RFI.
How sources are chosen and recorded: sourcing policy.
Municipal accounting lives for HVAC (D30)
26 municipal policies from Ontario set a life for HVAC as a whole, from 22 distinct tables: 10–50 years, median 20. These are amortization periods chosen for accounting, not measured lives, and they describe the system rather than this component.
Years. Each dot is one stated life and each bar a stated range; equal values stack. The dashed line is the median. Policies that copy the same table count once.
All 35 stated lives
| Municipality | As written | Years | Source |
|---|---|---|---|
| Trent Lakes | HVAC systems | 10 | p10 · 2009 |
| Grey Highlands | Furnace | 15 | p11 · 2026 |
| Kapuskasing | HVAC Systems | 15 | p14 · 2009 |
| Sarnia | HVAC | 15 | p1 |
| The Blue Mountains | Furnace | 15 | p11 · 2019 |
| Meaford | HVAC - Furnace | 15–25 | p17 · 2020 |
| Amherstburg | Mechanical/Electrical - HVA, Lighting, Security systems, Electrical Panel | 20 | p8 · 2026 |
| Amherstburg | Arena - Air Conditioner, Brine Chillers, Compressors, Dehumidifiers | 20 | p8 · 2026 |
| Chapple | Building Improvements - HVAC Systems | 20 | p1 |
| Greater Napanee | E20 Mechanical - Boilers, Fire Panel/Alarm, Unit Heaters, HVAC | 20 | p16 · 2012 |
| Grey Highlands | HVAC | 20 | p11 · 2026 |
| Kenora | Buildings - Mechanical System | 20 | p15 · 2026 |
| London | Building Components - Services (HVAC, lighting, communication, plumbing etc.) | 20 | p2 · 2023 |
| Meaford | HVAC - Air Distribution | 20 | p17 · 2020 |
| Prince Edward | Buildings - HVAC | 20 | p34 · 2022 |
| Rainy River | Building Improvements - HVAC Systems/Generator | 20 | p11 · 2010 |
| Severn | Building Components - Air Conditioner | 20 | p400 · 2019 |
| The Blue Mountains | Boiler | 20 | p11 · 2019 |
| Welland | HVAC/Electrical/Mechanical | 20 | p8 · 2021 |
| Bancroft, Centre Hastings, Hastings Highlands, Wollaston · same table | HVAC Systems | 20–25 | p5, p4, p6, p5 |
| Orillia | Facility - HVAC, Boiler | 20–25 | p19 |
| Amherstburg | Arena - Refrigeration Condenser, Scoreboard, Sound System | 25 | p8 · 2026 |
| Greater Madawaska, Quinte West · same table | HVAC | 25 | p17, p38 · 2025 |
| Greater Napanee | E25 Plant Mechanical & Electrical | 25 | p16 · 2012 |
| Grey Highlands | Boiler | 25 | p11 · 2026 |
| Kingston | Mechanical Equipment | 25 | p15 · 2016 |
| Kirkland Lake | Buildings and Improvements - Mechanical/Electrical | 25 | p10 · 2020 |
| Orillia | Arena - Condenser/refrigeration, compressor, HVAC, heating units | 25 | p19 |
| Severn | Building Components - Furnace/Heating System | 25 | p400 · 2019 |
| Severn | Building Components - Condenser | 25 | p400 · 2019 |
| The Blue Mountains | HVAC System | 25 | p11 · 2019 |
| Greater Napanee | E30 Chillers, Rink Piping, Fuel Storage Tanks | 30 | p16 · 2012 |
| Simcoe | Mechanical | 30 | p19 · 2025 |
| Brockton | Mechanical/Electrical (Heating/Cooling System, Refridgerating System) | 40 | p2 · 2009 |
| Meaford | HVAC - System | 50 | p17 · 2020 |
Each row was matched to its page automatically: the label and the number appear in the text of the cited page. An editor has not yet compared every row with the table, so follow the page link before relying on one. About the policies · All approved rows as JSON
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). Water-source heat pump, v0.1.0. https://unfinished.one/c/water-source-heat-pump/v/0.1.0BibTeX
@misc{unfinished_water_source_heat_pump_0_1_0,
title = {Water-source heat pump},
author = {{unfinished.one}},
year = {2026},
version = {0.1.0},
url = {https://unfinished.one/c/water-source-heat-pump/v/0.1.0},
note = {CC BY 4.0}
}Licence CC BY 4.0 · How to cite · JSON · Versions: 0.1.0