Modern boilers are significantly more energy efficient than previous models. Legislation came into place in 2018 meaning all boilers installed in the UK today must be at least 92% efficient.
This means that for every £1 spent on running your boiler, only 8p will go to waste heat and gases, and many boiler companies are striving for even more efficiency. These improvements will not only make your boiler better for the planet, but compared to an older, less efficient model, they will make a positive impact on your energy bills.