Boiler Efficiency Ratings

Compare new boilers and assess whether your current boiler would be better off being replaced

Our boiler efficiency tables provided by SEDBUK (the seasonal efficiency of domestic boilers in the UK) provide a guide of how effective your boiler is at turning fuel into heat.

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 0333 230 5216 for a no-obligation quote, alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.



Xilo 20 MCS W Top U/GB Efficiency

SAP seasonal efficiency


Rating band

Band E


ManufacturerLamborghini Boilers
ModelXilo 20 MCS W Top U/GB
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)22.75 - 22.75
Boiler ID902820-1
Manufactured From/To2000 - current


The Lamborghini Xilo 20 MCS W Top U/GB is an 'E' rated boiler with an efficiency of 76.6%.

The Xilo 20 MCS W Top U/GB is a Non-Condensing Combi boiler with a maximum power output of 22.75kw that uses Gas as its fuel source.

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


Similar Lamborghini Boilers to the Xilo 20 MCS W Top U/GB
(Non-Condensing Gas Combi)

Results ordered by efficiency. Some models may be obsolete.

Lamborghini ALBA 20 ASB

79.7% Efficient

Lamborghini ALBA 20 AS

79.1% Efficient

Lamborghini ALBA 24 AS

78.9% Efficient

Most Efficient Combi Gas Boilers

Alpha CD50

91.2% Efficient