Bosch water heater age decoders, water heater manual sources.
In this article series we give details of how to de-code water heater age for all water heater brand. We also discuss the conditions, maintenance, and factors that affect how long a water heater can be expected to last.
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A Bosch Water Heater Co tankless water heater data tagis shown here.
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Depending on the age of your Bosch water heater, the dates of production or manufacture are found at different points in the serial number that you will find on the water heater's data tag - as given in the Bosch Serial Number reference guide PDF provided later on this page.
Two Bosch water heater serial number formats are common but you will already notice that these commonly-used Bosch age decoder formats do not exactly match the serial number of the LPG firedBosch tankless water heater data tag shown.
All-Numeric: 12345678 where 123 encodes production monty and year encoded by a table available from Bosch and replicated below.
What you will notice is that for each year the company uses a 3-digit code that incrases by 1 for each month of that year. So for 1996, of the 3 digit code 86 = 1996 and the months suffix 1 - 12 as shown in the table below.
For 1998 the year begins with 861 = 1998 January of 1998 while 872 = 1998 December
Similarly for 2002 the year begins with 381 = 2002 January while 392 = 2002 December
Bosch Water Heater All-Numeric Serial Number Decoder |
||||||||||||
Year | ||||||||||||
Month | 1998 | 1999 | 2000 | 2001 | 2002 | 2004 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 |
Jan | 861 | 961 | 081 | 181 | 281 | 381 | 481 | 581 | 681 | 781 | 881 | 981 |
Feb | 862 | 962 | 082 | 182 | 282 | 382 | 482 | 582 | 682 | 782 | 882 | 982 |
Mar | 863 | 963 | 083 | 183 | 283 | 383 | 483 | 583 | 683 | 783 | 883 | 983 |
Apr | 864 | 964 | 084 | 184 | 284 | 384 | 484 | 584 | 684 | 784 | 884 | 984 |
May | 865 | 965 | 085 | 185 | 285 | 385 | 485 | 585 | 685 | 785 | 885 | 985 |
Jun | 866 | 966 | 086 | 186 | 286 | 386 | 486 | 586 | 686 | 786 | 886 | 986 |
Jul | 867 | 967 | 087 | 187 | 287 | 387 | 487 | 587 | 687 | 787 | 887 | 987 |
Aug | 868 | 968 | 088 | 188 | 288 | 388 | 488 | 588 | 688 | 788 | 888 | 988 |
Sep | 869 | 969 | 089 | 189 | 289 | 389 | 489 | 589 | 689 | 789 | 889 | 989 |
Oct | 870 | 970 | 090 | 190 | 290 | 390 | 490 | 590 | 690 | 790 | 890 | 990 |
Nov | 871 | 971 | 091 | 191 | 291 | 391 | 491 | 591 | 691 | 791 | 891 | 991 |
Dec | 872 | 972 | 092 | 192 | 292 | 392 | 492 | 592 | 692 | 792 | 892 | 992 |
...
Alpha-Numeric: AB123456789 where 123 encodes production month and year encoded by a table available from Bosch and encoding year and month just as for the table given above.
Use the same table above once you've piced out the three nnn digits after the first pair of alphabetic characters such as AB shown abovce.
Also see
For Buderus water heater age determination, use the same serial number decoding as given above.
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