SEDBUK stands for Seasonal Efficiency of Domestic Boilers in the UK and was developed under the Government’s Energy Efficiency Best Practice Programme, with the co-operation of boiler manufacturers. It provides a basis for fair comparison of the performance and energy savings offered by different boilers, based on realistic usage patterns.
The SEDBUK rating uses efficiency ‘bands’ with an “A” (high efficiency) to “G” (low efficiency) scale. You might recognise this as being similar to the energy labelling on other products, such as washing machines or fridges.
Government regulations now require that all new boilers are high efficiency Band A appliances.