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Glow-worm Swiftflow 100 Honeywell valve 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 Swiftflow 100 Honeywell valve Efficiency

SAP seasonal efficiency70.7%
Rating bandBand F


ManufacturerGlow-worm Boilers
ModelSwiftflow 100 Honeywell valve
Fuel TypeGas
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)17.6 - 17.6
Boiler ID47 -313 -08
Manufactured From/To1992 - 1999


The Glow-worm Swiftflow 100 Honeywell valve is an 'F' rated boiler with a poor efficiency of 70.7%.

The Swiftflow 100 Honeywell valve is a Non-Condensing Combi boiler with a maximum power output of 17.6kw that uses Gas as its fuel source.

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

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