Did you know boilers that are over 10 years old are inefficient and could be wasting your money? Not only that, they have a stronger effect on the environment as they produce more wasteful gases and only convert 60% of the gas they use into heat. Investing in a new boiler could save you a significant amounts in the long run. Any new boiler that is installed has to be a condensing boiler, which converts a minimum of 90% of the gas used to heat, so you will see an increase of at least 30% on your boilers efficiency.