Uniformat D2020
Water heater, gas, storage tank
Also called DHW tank, HWT, hot water tank, domestic hot water heater, gas water heater
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
- 12–15 years · CNA e-Tool Estimated Useful Life Table, p10 · HUD CNA 3.4.1.2.6 “Residential hot water heater, gas or electric” — U.S. Department of Housing and Urban Development (planning life)Family properties 12 years, elderly 15. US multifamily housing.
How sources are chosen and recorded: sourcing policy.
Municipal accounting lives for plumbing (D20)
14 municipal policies from Ontario set a life for plumbing as a whole, from 10 distinct tables: 15–50 years, median 26.3. 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 18 stated lives
| Municipality | As written | Years | Source |
|---|---|---|---|
| Kingston | Building Fixtures | 15 | p15 · 2016 |
| Meaford | Plumbing - Water Treatment System | 15 | p17 · 2020 |
| Trent Lakes | Mechanical Systems - Fixtures | 15 | p10 · 2009 |
| London | Building Components - Services (HVAC, lighting, communication, plumbing etc.) | 20 | p2 · 2023 |
| Meaford | Plumbing - Fixtures | 20 | p16 · 2020 |
| Meaford | Plumbing - Boiler | 20 | p17 · 2020 |
| Meaford | Plumbing - Septic System | 25 | p17 · 2020 |
| Rainy River | Building Improvements - Electrical/Plumbing | 25 | p11 · 2010 |
| The Blue Mountains | Septic System | 25 | p11 · 2019 |
| Bancroft, Centre Hastings, Hastings Highlands, Wollaston · same table | Electrical/Plumbing | 25–30 | p5, p4, p6, p5 |
| Greater Napanee | E30 Chillers, Rink Piping, Fuel Storage Tanks | 30 | p16 · 2012 |
| Grey Highlands | Septic System | 30 | p11 · 2026 |
| The Blue Mountains | Plumbing System | 30 | p11 · 2019 |
| Trent Lakes | Mechanical Systems - Piping | 30 | p10 · 2009 |
| Greater Madawaska, Quinte West · same table | Piping | 50 | p17, p38 · 2025 |
| Meaford | Plumbing - System | 50 | p16 · 2020 |
| Meaford | Plumbing - Cistern | 50 | p16 · 2020 |
| The Blue Mountains | Cistern | 50 | p11 · 2019 |
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
- HUD's row is for residential water heaters; commercial storage heaters may differ.
- Only one source so far: HUD planning lives for US multifamily housing. Canadian and observed sources are needed.
- 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 heater, gas, storage tank, v0.1.0. https://unfinished.one/c/water-heater-gas-tank/v/0.1.0BibTeX
@misc{unfinished_water_heater_gas_tank_0_1_0,
title = {Water heater, gas, storage tank},
author = {{unfinished.one}},
year = {2026},
version = {0.1.0},
url = {https://unfinished.one/c/water-heater-gas-tank/v/0.1.0},
note = {CC BY 4.0}
}Licence CC BY 4.0 · How to cite · JSON · Versions: 0.1.0