11 supported labels
Water heater age lookup
Decode manufacture dates for tank, heat-pump, and selected tankless water heaters.
Water heaters guideA. O. SmithA widely used style begins with two digits for year and two digits for production week (YYWW).Water heaters guideState Water HeatersA widely used style begins with two digits for year and two digits for production week (YYWW).Water heaters guideAmerican Water HeaterA widely used style begins with two digits for year and two digits for production week (YYWW).Decoder aliasReliance Water HeatersUses the verified A. O. Smith Corporation rule family.Decoder aliasU.S. CraftmasterUses the verified A. O. Smith Corporation rule family.Water heaters guideWhirlpool Water HeatersA widely used style begins with two digits for year and two digits for production week (YYWW).Decoder aliasLochinvar Water HeatersUses the verified A. O. Smith Corporation rule family.Water heaters guideBradford WhiteThe first letter is a repeating year code and the second letter is the month code.Water heaters guideRheem Water HeatersAfter an optional plant letter, four digits commonly encode month/year; some lines use week/year.Water heaters guideRuud Water HeatersAfter an optional plant letter, four digits commonly encode month/year; some lines use week/year.Water heaters guideRichmond Water HeatersAfter an optional plant letter, four digits commonly encode month/year; some lines use week/year.
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