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Glow-worm Energysaver 40 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.

Glow-worm Energysaver 40 Efficiency

SAP seasonal efficiency86.7%
Rating bandBand B


ManufacturerGlow-worm Boilers
ModelEnergysaver 40
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)8.79 - 11.72
Boiler ID41 319 69
Manufactured From/To1993 - 2003


The Glow-worm Energysaver 40 is a 'B' rated boiler which has good efficiency of 86.7%.

The Energysaver 40 is a Condensing Conventional boiler with a maximum power output of 11.72kw 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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