How Long Does an Electric Water Heater Last? Water Heater Basics

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Get the Most Out of Your Electric Water Heater

If you are one of the 40% of Americans who have an electric water heater (53% have gas water heaters), you will want to tune in to the information presented here. Learn how to extend the life of your water heater, how to tell how old your electric water heater is, and what to do when it comes time to replace that valuable part of your home: the trusty water heater.

How Long Does an Electric Water Heater Last?

While gas water heaters typically last 8-12 years, electric water heaters have a longer life expectancy, lasting on average 10-15 years.

How Can I Tell How Old My Electric Water Heater Is?

It's easy to find out how old your water heater (once someone teaches you a trick or two!) Start by watching this video:

To determine how old your water heater is:

1. Find the label.

2. Decode the label by finding out (chart below) how your brand of water heater documents the manufacturing date within the serial number on the label.

Water heater manufacturers document the month and year or year and week of manufacturing as part of the serial numbers on the water heater. Check this chart to find the brand water heater you have. Then use the description to decode the serial number.

Determine the Age of Your Water Heater By Decoding the Serial Number

Manufacturer

Brand

Serial # Ex.

Key

American

(Prior to 2001, American was owned by GSW Corporation and manufactured water heaters for nearly 50 different brands. American was acquired by A.O. Smith in 2001 and currently only manufactures American, American-Pro-line, Premium Plus, U.S. Craftmaster and Whirlpool brand water heaters.)

 

 

 

 

 

American 9746******(46th week of 1997) American uses a 2-digit year followed by a 2-digit week

 

Craftmaster
Mor-Flo/American
SABH (U.S.)
U.S. Craftmaster
Ace
American Hardware
Best
Best Deluxe
Apex
Aqua Temp
Agua Therm
Aquamatic
Champion
De-Limier
Deluxe
Eagle
Earl’s Energy Saver
Environtemp
Four Most
Hotmaster
Hotstream
King-Cleen
King-line
Master Plumber
Nationaline
Neptune
Penquin
Premier
Prestige
Proline
Proline-Plus
Quaker
Quick-Flo
Raywall
Revere
Riveria
Sands
Sentinel
Service-Star
Shamrock
Special Deluxe
Standard
Super Eagle
Sure-Fire
Thoro-clean
Tru-Test
Tru Value
U.S. Supply
Whirlpool
XCL-Energy Saver

 

 

Manufacturer

Brand

Serial # Ex.

Key

A.O. Smith
A.O. Smith Before 2008*H06******Since about 2008

0805AXXXXXX

Prior to 2008, the 2nd letter in the series is the month followed by the 2-digit year. A thru N = Jan thru Dec (excludes I).Since 2008, they use an 11-digit alpha-numeric serial number. The first two positions are the year followed by a two digit week.
Glascote
PermaGlas
Bradford-White
Bradford White D*******F(June 1967)

CJ*******

(Sept 1986)

B-W uses a 20-year letter code cycle to designate the year.

The first letter is the year and the second is the month.

Letter A = 1964, 1984 and 2004

A thru N = Jan thru Dec

(Excludes I, O, Q, R, U & V)

Jetglas
Lochinvar
Lochinvar
Energy Saver
Golden Knight
Knight
Rheem
Rheem 0794******(July 1994)

or

 

0794F*****

(July 1994)

Rheem uses a 2-digit month followed by a 2-digit year

Ruud
Rheem/Ruud
Richmond
Vista Therm
Citation
Aqua Therm
Energy Master
Vanguard
Cimarrom
Coast to Coast
Lowe’s
Servi-Star
True Value
ABS
Intertherm & Miller
Mainstream
Montgomery Ward
General Electric
Professional
State Industries(State industries was acquired by A.O. Smith in 2008. A.O. Smith now uses this code.) State/Kenmore 0904*******(April 2009)

 

 

 

C05*******

(March 2005)

 

Prior to 2008, State used a 1-letter month followed by a 2-digit year

A thru N = Jan thru Dec

(Excludes the letter I)

 

Beginning 2008, State uses an 11-digit alpha-numeric serial number. The first two positions are the year followed by a two digit week. Position 5 is a letter followed by 6 numbers.

 

 

Reliance
Ace
Ambassador
Barnett
Century
Crosley
Energy Stretcher
Freedom
Freedome/Nipsco
Hardware House
Master Plumber/True5
Mission
Nationaline
Patriot
Penfield
President
Regency
Century
The Plumbery
Thermo-King
TopLine

How Can I Extend the Life of my Electric Water Heater?

The best way to make a water heater live longer is to drain it annually and replace the anode rod once every three years. Learn how here:

Help! My Water Heater is on It's Last Legs!

We hear you! Give us a call and we'll help you decide what type and brand of water heater is best for you. We'll discuss gas versus electric, tank versus tankless. In the end, you get the best water heater for your money. We look forward to working with you!

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Check out this sleek tankless water heater!

Article Summary

Quick question & answer: How long does an electric water heater last?

An electric water heater lasts 10-15 years on average. To find out how old your water heater is, first find the label. Then, decode the label by finding out how your brand of water heater documents the manufacturing date within the serial number on the label, via the attached chart.

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