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Vaillant Ecomax 635 E 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.

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Vaillant Ecomax 635 E Efficiency

SAP seasonal efficiency92.6%
Rating bandBand A


ManufacturerVaillant Boilers
ModelEcomax 635 E
Fuel TypeLPG
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)34.9 - 34.9
Boiler IDVU GB 356-C
Manufactured From/To2004 - 2010


The Vaillant Ecomax 635 E is an 'A' rated boiler which has an excellent efficiency of 92.6%.

The Ecomax 635 E is a Condensing Conventional boiler with a maximum power output of 34.9kw 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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