Using a high efficiency condensing boiler with heating controls could save you up to 200 a year. It'll also significantly cut your home's CO2 emissions as boilers account for around 60 per cent of all domestic CO2 emissions. As the current lifespan of a boiler is around 15 years, choosing a heating system with a high efficiency condensing boiler with the correct heating controls can make a huge difference to your heating bills over time. There may be grants and offers available to help you install an energy efficient heating system.