Super Hot® Water Heaters
How to determine the date of production/manufacture or age of Super Hot® Water Heater Systems.
The date of production/manufacture or age of Super Hot® Hot Water equipment can be determined from the serial number located on the data plate.
Example serial number styles/formats found:
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Style 1: 85-ASE-2083
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Style 2: MLJC-9724
Style 1: 85-ASE-2083
Year of manufacture is 1st & 2nd numerical digits
Pre-2000 style
Style 2: MLJC-9724 (4 letters followed by 4 numbers)
Manufactured in 2000 and later
The 1st letter identifies the boiler model type,
The 2nd letter is the month A=1 (Jan) B=2 (Feb) C=3 (March) D=4 (April) etc,
The 3rd letter is the decade A=2010-19 B=2020-29 J=2000-09
The 4th letter is the year of the decade A=1 (2011) B=2 (2012) C=3 (2013) etc.
In this example “M” is boiler model, “L”=12 (December), “J”=0 decade (2000) and “C”=3rd year of decade (2003) Date of Manufacture for this example is December 2003.
Page last updated: 3 Oct 2022