* This figure is based on installing a new A-rated condensing boiler with a room thermostat upgraded from an older G-rated boiler. Savings will depend on the size and energy-efficiency performance of your home according to the Energy Savings Trust.
* This figure is based on installing a new A-rated condensing boiler with a room thermostat upgraded from an older G-rated boiler. Savings will depend on the size and energy-efficiency performance of your home according to the Energy Savings Trust.