Find out how efficient your boiler is

It is important to check how efficient you boiler is, because a new more efficient boiler can save you money. New boilers can be up to 90% more efficient that older ones, which results in a lower fuel usage, lower carbon dioxide emissions and lower operating costs. 

If you upgraded your G-Rated boiler to an A-rated one, your heating bill could drop by 25 % a year which results in an average saving of £235 a year. (boiler-scrappage.info)

To check the energy rating of your boiler go to homeheatingguide.co.uk and put in the manufacturer of you boiler and the model.