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  • Vaillant Open Vent Boilers

    The Vaillant Open Vent Boilers Vaillant open vent boilers have designed for the older central heating systems that cannot be pressurised. Known as heating only boilers. They can be fitted to a system with a hot water storage cylinder. They are ideal for most types of properties. Vaillant open vent boilers come in many sizes to suit the home, the smallest starting at 15KW [...]

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