*Source: https://www.hometree.co.uk/energy-advice/energy-saving/how-much-money-can-boiler-save-me.html
These are estimated figures based on installing a new A-rated condensing boiler with a programmer, room thermostat and thermostatic radiator controls (TRVs) in a gas heated home from an older boiler with a programmer and room thermostat. Savings will vary depending on the size and thermal performance of your home.
Figures are based on fuel prices as of June 2021.