How old is my GE/GeoSpring unit?
GE/GeoSpring is part of Rheem-built (tank, MMYY styles); Rinnai-built tankless from 2006; Midea (current GE-branded). 4 serial formats sourced across water heater.
Serial number decoder for GE/GeoSpring
Type the serial from the data plate, not the model number. Nothing is sent anywhere; the tables are in this page.
Format example: 1108903259
- GE/GeoSpring 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 1108903259 decodes to November 2008.
- GE/GeoSpring water heater serial numbers in the era not stated format encode the year as digits 4-5 (YY) and the week as digits 2-3 (source: building-center.org).
- Example: serial W291013412 decodes to week 29 of 2010.
- GE/GeoSpring water heater serial numbers in the era not stated format encode the year as digits 3-4 after the middle factory letter and the week as digits 1-2 after the middle factory letter (source: building-center.org).
- Example: serial 7351 M2806 16735 decodes to week 28 of 2006.
Decoder pages by product
Format eras
- era not stated VERIFIED
##########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 Rheem lookup takes serial number; returns warranty terms and coverage; 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
- GE/GeoSpring is treated as sharing Rheem's format because the source lists it in that family; the corporate relationship itself is an estimate.
- No official online lookup URL was verified for GE/GeoSpring.
- building-center documents only the Rheem-built MMYY styles. GeoSpring heat-pump units (GE Appliances, Louisville 2010-2016; later Bradford White) NOT documented in any fetched source - UNSOURCED for GeoSpring specifically.