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Keston Thermomatic RSM20FB Gas - Boiler Efficiency Ratings

Boiler Efficiency Rating

You can find out the energy efficiency of your boiler by checking its energy rating; you can do this now by selecting the make and model below.

A boiler’s energy rating is an indicator of its efficiency when used within an average domestic household. It's a great benchmark for comparing new boilers and can help you work out how much money you could save on energy bills if you replaced your current boiler with a more efficient model.

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.

Keston Thermomatic RSM20FB Efficiency

SAP seasonal efficiency78.1%
Rating bandBand D

Specification

ManufacturerKeston Boilers
ModelThermomatic RSM20FB
Fuel TypeGas
TypeCombi
MethodNon-Condensing
Flue TypeRoom-Sealed
FanFan Assisted
Output (kW)23 - 23
Boiler ID
Manufactured From/To1988 - current
SEDBUK Rating

Summary

The Keston Thermomatic RSM20FB is a 'D' rated boiler with an efficiency of 78.1%.

The Thermomatic RSM20FB is a Non-Condensing Combi boiler with a maximum power output of 23kw 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.

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(Non-Condensing Gas Combi)

Results ordered by efficiency. Some models may be obsolete.

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