Bosch®

How to determine the date of production/manufacture or age of Bosch® HVAC Systems.

The date of production/manufacture or age of Bosch® HVAC equipment can be determined from the serial number located on the data plate.

Parent Company:  Bosch Thermotechnology Corp. a Subsidiary of Advanced Thermal Technologies

Sister or similar Brands Include:   Bosch® | Buderus® | FHP® | Chromalox®  Worcester®

Example serial number styles/formats found:

  • Style 1: 3520-112-000001-T111M01973
  • Style 2: 2940-455-00015-7735003001
  • Style 3: 63036333-00-7080-3241
  • Style 4: 253000-08065-00040-77470007354

Style 1: 3520-112-000001-T111M01973

Description: BOSCH®
Serial numbers only beginning with 3520-.
Consist of 23 digits with clear, consistent patterns divided by dashes.
Produced in years 2010-2011.

The Year of Manufacture can be determined by using the 1st numerical digit of the 2nd series of digits. 0= 2010, 1 = 2011

The Month of Manufacture can be determined by using the last two digits of the 2nd series of digits.

Style 2: 2940-455-000015-7735003001

Description: BOSCH®
Serial numbers only beginning with 2940-.
Consist of 23 digits with clear, consistent patterns divided by dashes.
Produced from 2012 on.

The Year of Manufacture can be determined by using the 1st numerical digit of the 2nd series of digits. 2= 2012, 3 = 2013, 4= 2014, 5= 2015, 6= 2016, etc.

The Month of Manufacture can be determined by adding 2 to the last (3rd) digit of the 2nd series of digits.

Bosch Service Parts website provides a serial number lookup tool for similar styles as the above two examples. http://spareparts.bosch-climate.us/

Style 3: 63036333-00-7080-3241

Description: BOSCH® serial numbers for boilers and tanks each consist of 18-27 digits with clear, consistent patterns divided by dashes.

The Year of Manufacture can be determined by using the 1st numerical digit of the 3rd series of digits.

The Day of Manufacture can be determined by using the last three digits of the 3rd series of digits.  These three digits represent the Julian date.

Style 4: 253000-08065-00040-77470007354

Description: Bosch® serial numbers for boilers and tanks each consist of 18-27 digits with clear, consistent patterns divided by dashes.

The Year of Manufacture can be determined by using the 1st & 2nd numerical digit of the 2nd series of digits.

The Day of Manufacture can be determined by using the last three digits of the 2nd series of digits.  These three digits represent the Julian date.

Page last updated: 23 April 2019