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Grandee GCW 10-15 Oil - 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.

Grandee GCW 10-15 Efficiency

SAP seasonal efficiency90.8%
Rating bandBand A


ManufacturerGrandee Boilers
ModelGCW 10-15
Fuel TypeOil
Flue TypeOpen or Room-Sealed
FanNo Fan
Output (kW)10 - 12
Boiler ID
Manufactured From/To2008 - current


The Grandee GCW 10-15 is an 'A' rated boiler which has an excellent efficiency of 90.8%.

The GCW 10-15 is a Condensing Conventional boiler with a maximum power output of 12kw that uses Oil 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 Grandee Boilers to the GCW 10-15
(Condensing Oil Conventional)

Results ordered by efficiency. Some models may be obsolete.

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