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Alpha CB28X 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 CB28X Efficiency

SAP seasonal efficiency80.1%
Rating bandBand D


ManufacturerAlpha Boilers
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)28.0 - 28.0
Boiler ID
Manufactured From/To2001 - 2005


The Alpha CB28X is a 'D' rated boiler with an efficiency of 80.1%.

The CB28X is a Non-Condensing Combi boiler with a maximum power output of 28.0kw that uses Gas as its fuel source.

Being a 'D' rated boiler it would be worthwhile replacing it with a higher efficiency 'A' rated boiler.

Similar Alpha Boilers to the CB28X
(Non-Condensing Gas Combi)

Results ordered by efficiency. Some models may be obsolete.

Most Efficient Combi Gas Boilers