Manufacturer |
Other common brands
by same Manufacturer
|
Date within
Serial Number
|
Serial Number
Date format
|
---|---|---|---|
American
Water Heater Co
(A.O. Smith aquired in 2006)
|
Many brands - some include
US Craftmaster
Whirlpool
|
Position 1-4 | YYWW****** |
A.O. Smith
|
Glascote
Perma-glas
|
Position 2-4
Position 1-3
|
*UYY*****
UYY*******
|
Bradford-White Corp
|
Jetglas
|
Position 1-2 | VU******* |
Lochinvar Corp
|
Energy Saver
Golden Knight
Knight
|
Position 1-2 | VU******* |
Rheem Corp
|
Many brands - some include
GE
Hot
Point
Ruud
Richland
|
Position 1-4 |
MMYY******
(Ignore leading
alpha characters
i.e. RN, GE, HTPLG)
|
State Industries
(A.O. Smith
aquired in 2001)
|
Many brands - some include
ACE
Kenmore
Reliance
|
Position 1-3
Position 1-4
|
UYY******
(YYWW*******
used after 2007)
|