How old is my Ruud Water Heaters unit?
Ruud Water Heaters is part of Rheem Manufacturing. 7 serial formats sourced across water heater, tankless water heater.
Serial number decoder for Ruud Water Heaters
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: RU 0904B21710
- Ruud Water Heaters water heater serial numbers in the era not stated format encode the year as digits 3-4 of the numeric part (YY) and the month as digits 1-2 of the numeric part (source: building-center.org).
- Example: serial RU 0904B21710 decodes to September 2004.
- Ruud Water Heaters water heater serial numbers in the era not stated format encode the year as digits 3-4 of the numeric part (YY) and the month as digits 1-2 (source: building-center.org).
- Example: serial RHLN 0106534307 decodes to January 2006.
- Ruud Water Heaters water heater serial numbers in the 2010 to present format encode the year as digits 4-5 (20YY) and the WEEK = digits 2-3 (not month) (source: building-center.org).
- Example: serial A141511869 decodes to week 14 of 2015.
- Ruud Water Heaters's official lookup at ruud.com returns warranty / registration lookup.
Decoder pages by product
Format eras
- 2010 to present VERIFIED
A#########Water Heater - era not stated VERIFIED
AA ####A#####Water Heater, Tankless Water Heater - era not stated VERIFIED
AAAA ##########Water Heater - era not stated VERIFIED
##.##-######Tankless Water Heater - era not stated VERIFIED
A#########Central Air Conditioner, Heat Pump, Furnace, Packaged Unit - era not stated VERIFIED
#### A#### #####Central Air Conditioner, Heat Pump, Furnace, Packaged Unit - era not stated VERIFIED
####A#####Water Heater, Tankless Water Heater
Official lookup: the authority
Open the official Ruud Water Heaters lookup takes serial number; returns warranty / registration lookup; URL verified live
This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.
What we could not confirm
- Ruud Water Heaters is treated as sharing Ruud water heaters's format because the source lists it in that family; the corporate relationship itself is an estimate.
- Ruud Water Heaters is treated as sharing Rheem's format because the source lists it in that family; the corporate relationship itself is an estimate.
- Rheem water heater formats with an R/RH/RHLN/RHNG/RU prefix on many plates. rheem.registermyunit.com/en-US/warranty/brand?brand=ruud is the likely lookup (ESTIMATE, from the Rheem pattern in warranty_lookups.json). Plates since ~2004 also print MFG. DATE.
Sources
- https://www.building-center.org/ruud-water-heater-age/
- https://www.building-center.org/richmond-water-heater-age/
- img: Ruud1-Water-Heater-Age.png, Ruud5-Water-Heater-Age.png
- img: Ruud2-Water-Heater-Age.png
- img: Ruud3-Water-Heater-Age.png
- img: Ruud6-Water-Heater-Age-1.png
- https://www.building-center.org/rheem/
- https://www.rheem.com/faq/official
- https://www.ruud.com/warranty/official