Gas condensing boilers are more efficient than older non-condensing designs. Equipped with condensing technology, they utilise not only the heat generated by combustion, but also the water vapour content. They transfer this additional heat energy back into the heating system, meaning that more of the money you spend on fuel is converted into heating and hot water for your home or business. Our gas condensing boilers are at least 98 per cent efficient, helping to save you money and cut your carbon footprint.
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Please note: Warranty applies to boilers installed by Viessmann Trained Heating Engineers and registered using the Installer's Portal within 30 days of delivery.
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