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Alpha InTec 18S 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.

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.

Alpha InTec 18S Efficiency

SAP seasonal efficiency90.4%
Rating bandBand A


ManufacturerAlpha Boilers
ModelInTec 18S
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)18.3 - 18.3
Boiler ID
Manufactured From/To2011 - current


The Alpha InTec 18S is an 'A' rated boiler which has an excellent efficiency of 90.4%.

The InTec 18S is a Condensing Conventional boiler with a maximum power output of 18.3kw 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.

Similar Alpha Boilers to the InTec 18S
(Condensing Gas Conventional)

Results ordered by efficiency. Some models may be obsolete.

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