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.



Mini C32 32kW Combi Boiler Efficiency

SAP seasonal efficiency


Rating band

Band D


ManufacturerIdeal Boilers
ModelMini C32 32kW Combi Boiler
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)32.0 - 32.0
Boiler ID0694BM3420
Manufactured From/To2003 - current


The Ideal Mini C32 32kW Combi Boiler is a 'D' rated boiler with an efficiency of 78.3%.

The Mini C32 32kW Combi Boiler is a Non-Condensing Combi boiler with a maximum power output of 32.0kw 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 Ideal Boilers to the Mini C32 32kW Combi Boiler
(Non-Condensing Gas Combi)

Results ordered by efficiency. Some models may be obsolete.

Ideal Response 100

79.4% Efficient

Ideal Response 120

79.4% Efficient

Ideal Response 80

79.3% Efficient

Ideal C 95FF

78.5% Efficient

Most Efficient Combi Gas Boilers

Alpha CD50

91.2% Efficient