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§ 05 Equipment age

How old is my equipment?

Type the serial from the rating plate. We decode only formats the manufacturer documents, show which characters carry the date, and put the age next to a sourced lifespan and what owners paid to replace it.

Your equipment

Nothing is stored unless you add it to your home.
Try an example

On the rating plate on the side of the tank; the serial usually starts with two letters.

Serial diagram · Bradford White water heaters

Type the serial

The first letter is the year and the second letter is the month. Year letters repeat every 20 years (A = 2004 or 2024) and skip I, O, Q, R, U and V; month letters run A (January) to M (December) and skip I.

Bradford White · My Water Heater · checked 2026-10-05

Brands we decode

Bradford White water heaterOEM-documented · 3 worked examplesA. O. Smith water heaterOEM-documented · 2 worked examplesRheem water heaterOEM-documented · 4 worked examplesRuud water heaterOEM-documented · 2 worked examples

Not decoded yet

Carrier, Bryant, Trane, American Standard, Lennox, Goodman, Amana, York, Rheem, State: we have not found a manufacturer page that documents how the date is encoded, so we do not guess. Community decoding charts exist, but a wrong year sends the rest of the answer (age, lifespan, budget) the wrong way.