What the Energy Saving Trust Say

Boilers account for around 60% of what you spend in a year on bills, so an efficient boiler makes a big difference
Replacing an old gas boiler with an A-rating high-efficiency condensing boiler and improving your eating controls will significantly cut your home's carbon dioxide emissions - and could save you as much as £300 a year.

How much could you save?

This will depend on how old and inefficient your existing boiler is.

These are estimated figures based on installing a new A-rated condensing boiler and full set of heating controls in a gas-heated, semi-detached homw with three bedrooms.