Water heaters / Richmond

How old is my Richmond water heater?

RichmondChange
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Where to find the serial number

Rating label on the side of a tank water heater
Close-up of a rating label showing the serial numberLook for “Serial No.” on the label above the gas valve

Richmond serial formats we can read

Dark = year, orange = month or week.

Month + year after R-family prefix

R0804B10488

August 2004.

Coverage and sources

Supports the displayed tank-style formats. Check the printed manufacture date first. Tankless and other plant-prefix layouts are outside this decoder’s coverage.

References checked 2026-10-26.

Independent reference tool, unaffiliated with Richmond. Sources & method