How long does a water heater last?

Name: U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7
Creator: U.S. Energy Information Administration

The U.S. Department of Energy (DOE) estimated an average lifetime of around 15 years for storage water heaters in its 2024 water heater rule (2024 rule, data 1974-2021, read 2026-10-17, national, n not published by the source).

Source: DOE 2024 consumer water heater rule, read 17 October 2026.

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Our own count from the public microdata of the 2020 home energy survey by the U.S. Energy Information Administration (EIA): 10.0% of Florida households with a main water heater had one 15 or more years old (EIA RECS 2020, read 2026-10-17, n = 655, SE 1.2 points), below the 15.6% of US households with a main water heater (EIA RECS 2020, read 2026-10-17, n = 18,496, SE 0.3 points). EIA imputed (filled in statistically) the age for 15.4% of the Florida households counted and 17.6% of the US ones. Those heaters were still working when counted, so the shares describe age, not how long a heater lasts.

Researched by the InstaBids editorial team. Last checked: 17 October 2026 Updated 2026-10-17

In our own counts, n is the number of surveyed households behind a share and SE is its standard error, a measure of sampling error, in percentage points.

How long it lasts, by source

Storage (tank) water heaters: around 15 years, the average DOE estimated in its 2024 efficiency rule from appliance-age survey data and past shipments (2024 rule, data 1974-2021, read 2026-10-17, national, n not published by the source).
The U.S. Department of Housing and Urban Development (HUD) lists 12 years for the row “Residential hot water heater, gas or electric” in its Family column and 15 years in its Elderly column (structured on the ASTM E2018-08 outline, no issue date, read 2026-10-17, national, multifamily, n not published by the source). These are HUD's standard planning lives for multifamily capital needs assessments, not a measured life of a heater in a single-family home.

Fannie Mae's multifamily useful-life table lists 10 years for “Unit Level Domestic Hot Water” in its “Multifamily / Coop” column (table version 10/14, read 2026-10-17, national, multifamily, n not published by the source), a standardized planning life for multifamily property condition assessments, not a measured life of one home's heater. The three sources serve three purposes, so their figures stay side by side here rather than blended into one number.

Should you repair or replace a water heater?

HUD's table for multifamily capital needs assessments gives each component type one fixed standard life, but lets the person doing the assessment “estimate the Remaining Useful Life of any existing component independent of the Standard EUL”, EUL meaning estimated useful life (structured on the ASTM E2018-08 outline, no issue date, read 2026-10-17, national, multifamily).

Whether a repair or a new heater makes sense depends on which part failed, the heater's age and condition, and what written bids for each option say.

In Florida

28.8% of Florida households with a main water heater had one 10 or more years old (EIA RECS 2020, read 2026-10-17, n = 655, SE 2.1 points), as did 36.0% of US households with a main water heater (EIA RECS 2020, read 2026-10-17, n = 18,496, SE 0.4 points); these are ages of heaters still in use, not lifetimes.

Tank heaters only: among Florida households whose main water heater has a tank, 10.7% had one 15 or more years old (EIA RECS 2020, read 2026-10-17, n = 615, SE 1.2 points) and 30.2% had one 10 or more years old (EIA RECS 2020, read 2026-10-17, n = 615, SE 2.2 points). EIA imputed the age for 15.6% of these households counted.

Get written bids

Prices for a new water heater are a separate question, answered with their own sources on our national cost page: How much does it cost to replace a water heater?

Contractors who take part estimate from your photos and a written scope card, so nobody visits before you see any prices.

Sources for the figures on this page

U.S. Department of Energy, Energy Conservation Program: Energy Conservation Standards for Consumer Water Heaters, final rule, 89 FR 37778 (May 6, 2024), section 6 'Product Lifetime', p. 37859, read 17 October 2026. U.S. government work, public domain.
U.S. Energy Information Administration, 2020 Residential Energy Consumption Survey (RECS), public-use microdata file v7, read 17 October 2026. U.S. government work, public domain; EIA credited as the source. Microdata file: recs2020_public_v7.csv.
U.S. Department of Housing and Urban Development, CNA e-Tool Estimated Useful Life Table, read 17 October 2026. U.S. government work, public domain.
Fannie Mae, Form 4099.F, Instructions for Performing a Multifamily Property Condition Assessment (Version 2.0), Appendix F, Estimated Useful Life Tables (10/14), read 17 October 2026. (c) 2014 Fannie Mae; one figure cited with attribution.