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GSW Water Heaters & Manuals

GSW Water heater age decoders, water heater manual sources.

In this article series we give details of how to de-code water heater age for all water heater brand. We also discuss the conditions, maintenance, and factors that affect how long a water heater can be expected to last.

This water heater page works for these brands: GSW Water Heaters, John Wood, Moffat, Medal.

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

GSW Hot Water Heater Age De-Coding Procedure - Quel âge a votre chauffe-eau?

GSW Electric water heater cited and discussed at InspectApedia.comGSW produces a wide range of gas and electric water heaters. Shown here, a 50G electric water heater from GSW.

[Click to enlarge any image]

The age of a GSW current water heater is coded as YY MM in the first four digits of the serial number, after ignoring any alphabetic letter that starts the serial no. Using the company's example:

GSW heater S/N U0106413635 was manufactured in 2001, June

See ANTHES BOILER / FURNACE AGE for more discussion of age decoding and finding Manuals for Anthes

See also JOHN WOOD Co. Ltd.

GSW Water Heater Age Query: (Mar 1, 2013) Lee Harding said: I'm trying to determine the age of my GSW hot water heater. Model 6G505DE1

Serial # 50704 535391. I can't tell from these numbers.

Reply: best guess: week 50 of year 1970

Normally the first two digits of the serial number give the GSW heater's year of manufacture. Your serial numbers don't match this system, perhaps because of wear or smearing or heater particulars.

From your serial number we'd guess week 50 year 1970 - which seems a bit antique. Re-check that you're really seeing a 50 in the first two digit positions.

For GSW water heaters manufactured before 2008 the heater the age is encoded as the first four numeric digits of the serial number as two digits of year followed by two digits of month. Ignore any leading alphabetic character.

XYYMMnnnnnn

For GSW water heaters produced after 2008 the water heater age is also encoded in the first four digits of the serial number but as two digits of year followed by a two-digit week number (weeks 01-52).

YYWWnnnnnn

Contact information Details & Manuals for GSW Water Heaters

From GSW's website (2017 & 2018), GSW produces for-sale as well as rental-water heaters in Canada.

On 2014-08-06 by jeff

looking for the year of my GSW Hot water heater Serial # S0211 213527


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