Ideal for homes with multiple bathrooms, these work with a separate hot water cylinder but house most major components (like the pump and expansion vessel) inside the boiler itself. Viessmann Direct 3. Open Vent (Heat Only) Boilers
Ideal for rural properties where gas may not be available. Vitosol and Vitocal: The Hybrid Future viessmann boiler catalogue
: 7-inch color touchscreen and capability to control up to four heating circuits. Specialized and Large-Scale Systems Ideal for homes with multiple bathrooms, these work