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Viessmann Vitodens 343F LPG - Boiler Efficiency Ratings

Boiler Efficiency Rating

You can check your boilers rating by selecting it's make and model below. Ratings are based on the SEDBUK Rating which is an indicator of its efficiency when used within an average domestic household, it's a great benchmark for comparing new boilers and also assessing whether your current boiler would be better off being replaced due to low efficiencies.

For new boiler installations call British Gas Boilers on 0800 327 7119 for a no-obligation quote, alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.

Viessmann Vitodens 343F Efficiency

SAP seasonal efficiency92.4%
Rating bandBand A


ManufacturerViessmann Boilers
ModelVitodens 343F
Fuel TypeLPG
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)11.8 - 11.8
Boiler ID
Manufactured From/To2008 - current


The Viessmann Vitodens 343F is an 'A' rated boiler which has an excellent efficiency of 92.4%.

The Vitodens 343F is a Condensing Combi boiler with a maximum power output of 11.8kw that uses LPG as its fuel source.

As this boiler is 'A' rated it will provide efficient heating and subsequently reduce fuel bills and carbon dioxide emissions.

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