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Ferroli Optimax HE Plus 18 S Gas - 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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Ferroli Optimax HE Plus 18 S Efficiency

SAP seasonal efficiency90.5%
Rating bandBand A


ManufacturerFerroli Boilers
ModelOptimax HE Plus 18 S
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)17.7 - 17.7
Boiler ID41-267-31
Manufactured From/To2009 - current


The Ferroli Optimax HE Plus 18 S is an 'A' rated boiler which has an excellent efficiency of 90.5%.

The Optimax HE Plus 18 S is a Condensing Conventional boiler with a maximum power output of 17.7kw that uses Gas 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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