Trew Green Energy condensing boilers are at least 90% efficient, meaning that they turn 90% of the fuel they use into heat.
The official rating for boiler efficiency is the ‘SEDBUK’ scale. SEDBUK stands for ‘Seasonal Efficiency of a Domestic Boiler in the UK’.
Greenstar condensing boilers achieve the highest possible efficiency category – SEDBUK Band ‘A’. (See below)
Depending on your intallation requirements there are grants of up to £300 available for domestic solutions. Subject to terms and conditions
What is a condensing boiler?
The term ‘condensing boiler’ refers to the fact that the boilers produce condense from time to time.
Condensing boilers use heat from exhaust gases that would normally be released into the atmosphere through the flue. To use this latent heat, the water vapour from the exhaust gas is turned into liquid condensate.
In order to make the most of the latent heat within the condensate, condensing boilers use a larger heat exchanger, or sometimes a secondary heat exchanger.
Due to this process, a condensing boiler is able to extract more heat from the fuel it uses than a standard efficiency boiler. It also means that less heat is lost through the flue gases.
Householders who have had their existing boiler for more than 10 years and receive high gas bills, could save up to £225* a year by upgrading to a condensing boiler.
Older boilers can be as little as 60% efficient. Every Trew Green Energy boiler is A-rated for efficiency which means it turns 90% or more of the fuel it uses into heat and hot water for your home.
The SEDBUK rating was developed under the UK Government’s ‘energy efficiency best practice programme’ with the co-operation of boiler manufacturers, including Worcester. It provides a basis for fair comparison of different models of boilers.
The SEDBUK rating is the average annual efficiency achieved in typical domestic situations. It takes into account sensible assumptions about climate, control, pattern of usage and other similar factors.
The rating is calculated from laboratory tests together with other important factors such as boiler type, fuel used, ignition type, UK climate, boiler water content and typical domestic usage patterns. So, for estimating annual fuel running costs SEDBUK is a better guide than laboratory test results alone.
The boiler’s performance is scored, enabling the boiler to be placed in a banding system using a scale from ‘A’ to ‘G’. ‘A’ rated boilers are the most efficient.