![]() Contact Information & Service Manuals for AO Smith Water Heaters By 2006 the company had purchased both Canadian GSW Incorporated and the American Water Heater Company. patent in 1936, for its glass-lined water heater, a tank that enjoyed a longer life by resisting corrosion and leaks. Smith Water Heater CompanyĪO Smith was founded in 1915 and registered its first U.S. Note that to avoid confusion, the letter I is not used. Other AO Smith water heaters that may be sold under different brand names include Glascote water heaters, National water heaters & Perma-Glas water heaters. Ser# N69-C- YY -12345 decodes year in the pair of digits shown as YY - found on water heaters from the 1970s Ser# F B00A123456 decodes to F=Factory code, B=month code using A - M for January - December (the letter I is not used) and the next two digits encode the year. Ser# MYY1234567 - example Ser# B0112344567 decodes to February 2001: the first letter encodes the month using A - N for January - December (the letter I is not used) and the second two digits encode the year. Ser# MMYY1234567 - example: Ser# 03991234567 decodes to March 1999 this older style AO Smith water heater date code decodes as shown where MM = month and YY = 2 digit year. Smith water heater date of manufacture code has been used since 2008. Ser# YYWW123456 - example: Ser# 9902123456 decodes to year 1999 and the week 02 - or early January. However on some AO Smith water heaters, particularly older models, you'll see a confusion of letters and numbers in the serial number that may be decoded into manufacturing date as shown below. Hope this information helps some people out - A.O.S. Department there and make the serial plates all the time. The first 2 are the year and the second 2 are what week it is. Smith Water Heaters, 500 Tennessee Waltz Parkway,Īshland City, TN 37015 USA, Tel: 1-80 Website:Įmail: Smith Water Heater Age Determination - reader comment: (May 11, 2012) AO Smith employee said: To tell the age of any AO Smith water is the first 4 numbers. ![]() Smith Corporation | 11270 West Park Place | P. Smith Water Heater Age Decoding TipsĬontact: A. We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need. ![]() Our photo at page top shows an oil fired water heater with a backpressure problem and other safety concerns like a missing extension tube on that relief valve, and maybe a missing draft regulator and perhaps an oil line that is not protected from damage. We include a table of common error codes given on some models of A.O. We give contact information for AO Smith water heater, geyser, cylinder, calorifier manufacturers and for water heater installation, operation, & troubleshooting manuals. The water heater age guide on this page works for these brands: AO Smith, Glasccote, National, Perma-Glas water heaters. ![]() Smith Water heater age decode key & water heater manual sources.Īge decoding guide for water AO Smith water heaters, manuals, repair & maintenance guides. ![]() We have no relationship with advertisers, products, or services discussed at this website.Ī.O. InspectAPedia tolerates no conflicts of interest. ![]()
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