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Save up to £420* on your energy bill annually by upgrading to a modern, efficient boiler.

*Figure from the Energy Saving Trust, based on replacing a G-rated boiler with no heating controls with a new A-rated condensing boiler fitted with a programmer, room thermostat and thermostatic radiator valves (TRVs), in a gas-heated home in Great Britain. Savings will vary depending on the size and thermal performance of your home.

Figures reflect the Energy Saving Trust's estimates as published May 2026.