How old is my Whirlpool Water Heaters unit?
Whirlpool Water Heaters is part of A.O. Smith Corp. 7 serial formats sourced across water heater.
Serial number decoder for Whirlpool 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: 1210A002243
- Whirlpool Water Heaters water heater serial numbers in the 2008 to present format encode the year as digits 1-2 (YY) after optional leading S and the week as digits 3-4 (source: building-center.org).
- Example: serial 1210A002243 decodes to week 10 of 2012.
- Whirlpool Water Heaters water heater serial numbers in the era not stated format encode the year as digits 1-2 (20YY) and the week as digits 3-4 (source: building-center.org).
- Example: serial 1104T403904 decodes to week 4 of 2011.
- Whirlpool Water Heaters water heater serial numbers in the 2008 to present format encode the year as digits 1-2 (YY, 20YY) after any leading letter and the week as digits 3-4 (source: building-center.org).
- Example: serial 1924115263020 decodes to week 24 of 2019.
- Whirlpool Water Heaters's official lookup at whirlpoolwaterheaters.com returns warranty / registration lookup.
Decoder pages by product
Format eras
- before 2010 VERIFIED
A##A######Water Heater - 2008 to present VERIFIED
####A######Water Heater, Heat Pump Water Heater, Tankless Water Heater - 2008 to present VERIFIED
#############Water Heater - before 2008 VERIFIED
AA##A######Water Heater - before 2007 VERIFIED
##### #####Water Heater - 1970 to 1979 VERIFIED
A##-A-##-######Water Heater - era not stated VERIFIED
####A######Water Heater
Official lookup: the authority
Open the official Whirlpool 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
- Both documented styles are YYWW (American family). whirlpoolwaterheaters.com warranty-verification.html returns 500 - use the warranty-information page or the hotwater.com tool.
Sources
- https://www.building-center.org/a-o-smith/
- https://www.building-center.org/whirlpool-water-heater-age/
- img: Whirlpool-Water-Heater-Style-1.jpg
- https://www.building-center.org/american-water-heater-age/
- https://www.building-center.org/u-s-craftmaster-water-heater-age/
- https://www.building-center.org/craftmaster-water-heater-age/
- https://johnwoodwaterheaters.com/faqs/official
- https://gsw-wh.com/faq/official
- https://www.whirlpoolwaterheaters.com/warranty-information/official