De Dietrich® HVAC age

How to determine the date of production/manufacture or age of De Dietrich® brand HVAC Systems.

The industry average service design life for most forced air furnaces is 15-20 years, and the industry average service design life for most air conditioning condensing units is 10-15 years. The average service design life of boilers can vary from as little as 10 years to as many as 50 years depending on the type and quality of materials used in their manufacture. Routine upkeep/maintenance, regional weather/climate, and location/placement of the mechanical systems will all play critical roles in the longevity of these systems.

See also: Estimated Useful Service Life Expectancies

Parent Company: De Dietrich Remeha (now BDR Thermea Group)

Subsidiaries or other related brands: BAXI | Andrews Water Heaters | SenerTec | Sofath | HEATRAESADIA | OERTLI | Potterton | HITECSA | Brötje |Chappée | Baymak | Remeha | Roca Heating | De Dietrich

The date of production/manufacture or age of De Dietrich brand HVAC equipment can be determined from the serial number located on the rating data plate.

Example serial number styles/formats found:

  • Style 1:    A 10001 1313 03 09 00015

Legend:  Year is RED;  Month is GREEN; Week is BLUE

Style 1:   A 10001 1313 03 09 00015

Year of manufacture can be determined by using the 13th & 14th positions of the serial number

Month of manufacture can be determined by using the 11th & 12th positions of the serial number

De Dietrich® History¹
  • 1684 - Johann von Dietrich acquires the Jaegerthal forge in Europe (France) and founds De Dietrich Thermique
  • 1848  - De Dietrich embraces the industrial era by progressively reducing the production of cast iron products in favor of mechanical and railroad equipment.
  • 1870 - The company turns towards consumer durables including stoves, cookers, wooden furniture, enameled cast iron bathtubs – and urban or industrial equipment such as tramways, distillation equipment, and industry specific wagons
  • 1896 - De Dietrich enters automobile manufacturing. Exits automobile manufacturing in 1905.
  • 1935 - Remeha is founded and becomes Holland's largest manufacturer of heating products.
  • 2004 - De Dietrich Remeha is founded after a merger between Remeha and De Dietrich Thermique
  • 2009 - Baxi merges with De Dietrich Remeha to create BDR Thermea Group

¹Excerpts from various industry sources

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: 10/23/2023

Thank you to Rhys Penalagan of East City Heating and Cooling - Peterborough, Ontario Canada for providing updated information to create this page!