How old is my Viessmann boiler?

1. Find the rating label: On wall-mounted Vitodens boilers the serial label is inside the cabinet on the left side once the white front cover is off, and on some models it is also under the boiler on the bottom panel. Viessmann's serial number locator shows the spot for each model.
2. Take a photo of the whole label, or note the model and serial numbers.
3. Check it on Appliance Age. It is free, and no account is needed.

On wall-mounted Vitodens boilers the serial label is inside the cabinet on the left side once the white front cover is off, and on some models it is also under the boiler on the bottom panel. Viessmann's serial number locator shows the spot for each model.

Keep the model, serial and any separate production code or printed date together. Not every serial number contains a publicly decodable date.

Use the format that belongs to this product family. A printed production date, a supported serial code or manufacturer confirmation can establish the age. Repeating year codes may leave more than one possible year; a model-series introduction date helps narrow the range but does not date your individual unit.

Boilers typically last 15 to 30 years. Use, water quality and maintenance matter more than the brand. Have it serviced yearly and watch the pressure gauge; frequent topping up points to a leak.

22 Viessmann models are currently ENERGY STAR certified, 22 of them sold in Canada. The certified models went on the market between 2013 and 2021. An older Viessmann boiler may use more energy than today's certified models.

Source: ENERGY STAR open data, 2026-10-08.

Parts that wear out most often on boilers:

• Circulator pump
• Expansion tank
• Pressure relief valve
• Igniter

Have the model number from the rating label ready so the parts fit.

Every Viessmann check is compared with Health Canada, U.S. CPSC and U.S. NHTSA recall notices.

Questions

How do I find out how old my Viessmann boiler is?

Find the rating label (On wall-mounted Vitodens boilers the serial label is inside the cabinet on the left side once the white front cover is off, and on some models it is also under the boiler on the bottom panel. Viessmann's serial number locator shows the spot for each model), then enter the serial number or a photo of the label on Appliance Age. It checks supported serial date codes or a printed date for you, free; some formats need more information.

Where is the serial number on a Viessmann boiler?

On wall-mounted Vitodens boilers the serial label is inside the cabinet on the left side once the white front cover is off, and on some models it is also under the boiler on the bottom panel. Viessmann's serial number locator shows the spot for each model.

Can I tell how old my Viessmann boiler is by the model number?

The model number tells you which model it is, not when your unit was made. Look for a manufacture date or a supported date code in the serial number, printed next to the model number on the same label.

Can I decode a Viessmann serial number myself?

Some Viessmann product families have serial date codes, while others need a printed date or manufacturer confirmation. Repeated year codes can produce multiple candidate years; the model and original documents help resolve them.

How long does a Viessmann boiler last?

Boilers typically last 15 to 30 years with normal use and maintenance.

Where can I get Viessmann boiler parts?

From Viessmann's official parts store, or an appliance parts retailer. Have the model number from the rating label ready.

Other Viessmann appliances

• Viessmann water heater (tank)
• Viessmann heat pump