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Atlantic Boilers KDB 251 KCA 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.

Atlantic Boilers KDB 251 KCA Efficiency

SAP seasonal efficiency89.8%
Rating bandBand B


ManufacturerAtlantic Boilers Boilers
ModelKDB 251 KCA
Fuel TypeGas
Flue TypeOpen or Room-Sealed
FanFan Assisted
Output (kW)28.4 - 28.4
Boiler ID
Manufactured From/To2003 - current


The Atlantic Boilers KDB 251 KCA is a 'B' rated boiler which has good efficiency of 89.8%.

The KDB 251 KCA is a Condensing Combi boiler with a maximum power output of 28.4kw that uses Gas as its fuel source.

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

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(Condensing Gas Combi)

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