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Prestige Water Heater Age by Serial Number — Free Lookup

A.O. Smith

Also works for A.O. Smith-built labels: State, Reliance, American, Whirlpool, U.S. Craftmaster, Kenmore, GSW and John Wood.

How Old Is Your Prestige Water Heater?

Prestige is a private-label trade name produced on A.O. Smith (American Water Heater / U.S. Craftmaster) lines, so its serial numbers carry the same date code as State, Reliance, and American units: year, then week, in the first four digits. Enter your serial in the free decoder above for an instant answer, or follow the guide below to read it yourself.

Where to Find the Serial Number

Check the rating plate on the side of the tank — a silver or white sticker, usually in the upper half, that lists the model number and serial number together. The date lives in the serial, not the model number. On older tanks the sticker can fade; a phone photo with the contrast bumped usually makes the first four digits readable.

How the Prestige Serial Format Works

The date code is year, then week, in the first four digits:

Worked example — 1312D005836:

  • 13 = 2013 (year)
  • 12 = week 12 (late March)
  • D and the remaining digits = factory and production sequence
  • Result: manufactured in week 12 of 2013

Letter prefixes. Some serials start with letters, or insert a letter inside the date block — these are factory codes, not part of the date. Skip leading letters and read the first four digits you find. For example, AB0911E007544 decodes to week 11 of 2009.

The two-digit year can point at two decades — 13 is 2013 on most units but could be 2003 on an older one. Compare the unit's condition and model line; our decoder lists every plausible year instead of guessing.

Why Your Prestige Water Heater's Age Matters

  • Lifespan. Tank water heaters average 8–12 years of service. Past that, internal corrosion makes tank failure — and a flooded floor — far more likely.
  • Warranty. Prestige tanks carried standard 6- and 12-year warranty tiers counted from the manufacture date. The serial tells you whether a repair might still be covered.
  • Replacement planning. A unit past 10 years is on borrowed time. Knowing the date lets you shop for a replacement calmly instead of during an emergency.

Sources

Brand ownership and serial format verified against the InterNACHI water heater dating chart and A.O. Smith's manufacturing-date guidance.

Frequently asked questions

Who makes Prestige water heaters?
Prestige is a private-label trade name built by the A.O. Smith manufacturing family (U.S. Craftmaster / American Water Heater). The InterNACHI water heater dating chart lists Prestige among the many labels produced on A.O. Smith lines, so its serials use the same year-week coding as State, Reliance, and American units.
How do I tell the age of a Prestige water heater from the serial number?
The first two digits of the serial are the year and the next two are the week of manufacture. For example, serial 1312D005836 means week 12 of 2013 — late March 2013. Letters before or inside the serial are factory codes; read the date from the leading digits.
Where is the serial number on a Prestige water heater?
On the rating plate — a silver or white sticker on the side of the tank, usually in the upper half, that lists the model and serial numbers together. If the sticker has faded, photograph it and boost the contrast — you only need the first four digits.
How long does a Prestige water heater last?
Tank-style units average 8–12 years. Regular sediment flushing and anode rod replacement push units toward the longer end; hard water shortens the life. Past 10 years, plan for replacement before a leak decides for you.
My Prestige serial starts with letters. How do I read it?
Leading letters are factory or production-line codes, not part of the date. Skip them and read the first four digits you find as year and week — for example, AB0911E007544 decodes to week 11 of 2009.