Viessmann Vitotron with Cylinder

Viessmann Vitotron Electric Boiler with a Built-in DHW Cylinder

This version of the Viessmann Vitotron 100 boiler already includes a cylinder for domestic hot water preparation with a capacity of 100 or 120 liters. Compared to the standalone Vitotron model (without a cylinder), which is used purely for heating while hot water is handled by an external source, here you get a compact two-in-one solution – heating and water heating from a single unit, without the need for an additional water heater and connecting installation.

Thanks to the built-in cylinder, installation is simpler and saves space, which you will especially appreciate in smaller boiler rooms, utility rooms, or cottages. The boiler is suitable where a gas connection is not available, or as a supplementary or backup heat source in combination with a heat pump or a photovoltaic power plant.

The boiler’s output control responds smoothly to the current heat demand, which limits unnecessary temperature fluctuations and increases operating comfort. Electric heating is quiet, produces no flue gases, and requires no chimney or flue gas venting, so installation is possible practically anywhere.

Frequently Asked Questions

• What is the difference compared to the Viessmann Vitotron without a cylinder? This version has a built-in hot water cylinder (100 or 120 l) directly in the boiler, so there is no need for a separate water heater and its connection – the boiler heats and prepares hot water at the same time.
• What size cylinder should I choose – 100 or 120 liters? The smaller 100-liter cylinder is sufficient for a typical household of 2–3 people; the 120-liter one is better suited for higher hot water consumption, for example a family house with 4 or more people.
• Is this boiler suitable as the main heating source? Yes, it can be used as either the main or a supplementary/backup heat source – suitability depends on the building’s heat loss and whether a gas connection is available.
• Do I need a professional for installation? Yes, connection to the electrical network and to the heating system must be carried out by a qualified electrician/heating technician, taking into account the output of the chosen model and the reserve of the circuit protection.
• Can the boiler be combined with photovoltaics? Yes, the electric boiler is a good complement to a photovoltaic power plant, since it can use surplus generated electricity for heating and water heating.