Save up to £320* on your annual energy bill with an upgrade to a modern more efficient boiler. *These figures from the Energy Saving Trust for a Detached house that change from a G rated boiler to an A rated boiler. 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. Numbers were based on fuel prices as of April 2017