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Seasonal Efficiency of Domestic Boilers in the UK

SEDBUK was developed under the Government’s Energy Efficiency Best Practice Programme with the co-operation of boiler manufacturers, and provides a basis for fair comparison of the energy performance of different boilers.SEDBUK is the average annual efficiency achieved in typical domestic conditions, making reasonable assumptions about pattern of usage, climate, control, and other influences. It is calculated from the results of standard laboratory tests together with other important factors such as boiler type, ignition arrangement, internal store size, fuel used, and knowledge of the UK climate and typical domestic usage patterns.For estimating annual fuel costs SEDBUK is a better guide than laboratory test results alone. It can be applied to most gas and oil domestic boilers for which data is available from tests conducted to the relevant European standards. The SEDBUK method is used in SAP.
Read more on the SEDBUK website
The table below shows the rating of appliances and which categories they fall into:
Many older boilers are in the ‘G’ category. Upgrading to a modern ‘A’ rated boiler will save you a considerable amount on your gas bill. Book a free consultation with our qualified Gas Safe engineers. You can find our contact details here.