Every effort is undertaken to offer you correct and concise information to assist you in determining the age or manufacture date of HVAC equipment. Anytime anyone is dealing with numbers and letters in determining data, mistakes and misinterpretation are bound to happen. For this reason if you find during your research that we may have erred please contact us. In addition perhaps you have come across a brand, model or serial number format that we have not addressed. Email us information or pictures of data/nomenclature plates of the unit and we will attempt to assist you in your determinations. Email
This page was last updated: 26 July 2009
Buderus (Present)
Date of Manufacture (Present): Buderus serial numbers for boilers and tanks each consist of 18 – 27 digits with clear, consistent patterns divided by dashes. The format for the serial number depends on the product manufacture date.
First Format example: The first format of a Buderus serial number looks like this: 63036333-00-7080-3241
The date of manufacture is the 11th, 12th, 13th, and 14th number and indicates the year and day (Julian date) of manufacture. 63036333-00-7080-3241. In this Buderus sample number the unit was built on the 80th day of 2007.
Year of manufacture: 63036333-00-7080-3241
Day of manufacture: 63036333-00-7080-3241
Second Format example: The second format of a Buderus serial number looks like this: 253000-08065-00040-77470007254
The date of manufacture is the 7th, 8th, 9th, 10th, and 11th number and indicates the year and day (Julian date) of manufacture. 253000-08065-00040-77470007254. In this Buderus sample number the unit was built on the 65th day of 2008.
Year of manufacture: 253000-08065-00040-77470007254
Day of manufacture: 253000-08065-00040-77470007254