Boiler Efficiency Calculator | Most Efficient Boilers

The big savings come from swapping an old boiler for a new, high-efficiency one. SEDBUK 2005. The previous SEDBUK system is featured on older boilers and is still used by lots of manufacturers. Like the ErP system, it rates boilers from A-G. A-rated boilers score over 90% for efficiency, while G-rated boilers come in under 70%.


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How efficient is my boiler? - British Gas

30/04/2021 · According to the energy saving trust, you could save as much as £340 a year on your gas bill if you're trading in an old-style non-condensing boiler for a new condensing one. But to make sure you make the most efficient choice, you need to pick the right type of boiler for your home.

Do You Need a New Boiler? - Based in United Kingdom

05/09/2020 · If your boiler is less than 15 years old then will have been labelled A-rated. However as the vast majority of condensing are still set up to run like a non-condensing boiler, so the efficiency is in line with old style boilers, as follows: Over 25 years old: 60-70% efficient. 20 years old: 75% efficient.