Tempra® Water Heater age

Example serial number styles/formats found:

The date of production/manufacture or age of Tempra brand water heating equipment can  be determined by using the specific math formula. 
Using the 4 digits in the center of the serial number: 9137

Add 25 to 91 = 116
Use the last 2 numbers for the year 16 is 2016
Then subtract 25 from 37 = 12 this is week 12

  • Style 1:  223426-9137-9000359

Legend:  Year is RED;  Week is BLUE

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Tempra® History

    Stiebel Eltron is the parent company manufacturing Tempra Water Heaters.
    The company was founded in 1924 by Dr. Theodor Stiebel in Berlin, Germany. Initially, the company concentrated on the manufacture of electric water heaters for the German market.  Today, Stiebel Eltron is the largest manufacturer of water heaters in Germany. 


    Stiebel Eltron USA is Headquartered in West Hatfield MA

    Every effort is undertaken to offer you correct and concise information to assist you in determining the age or manufacture date of HVAC/R equipment. Users relying on this information do so at their own risk.
    Page last updated: 02/06/2024