The latest innovation in heating technology

The incredibly efficient, cutting-edge Vitovalor represents the latest in heating technology. It provides simultaneous heating and hot water using advanced fuel cell technology to convert hydrogen into energy, offering independence from rising electricity prices.

The system combines heat and power generation on a very small footprint and offers considerably higher electrical efficiency than that available through current combined heat and power (CHP) solutions; making it the ideal future-thinking energy centre for modern family homes.

Saving You Money & Helping the Environment


  • Up to 40% lower energy bills compared with gas condensing technology
  • Protect the environment through lower CO2 emissions
  • Increasing independence of electricity prices by generating power on site
  • Compact design with a small footprint
  • Efficient and environmentally responsible technology of the future
  • High operating convenience via tablet or smartphone
  • Benefits from PACE funding 
  • Energy efficiency class: A++
  • Energy efficiency class, DHW heating: A+

Generating both power and heat

The Vitovalor is a fuel cell heating appliance that uses the principle of cogeneration to generate both power and heat. To do so, the fuel cell requires not only oxygen but also hydrogen, which is obtained from natural gas in an earlier process.

This technology, especially developed for detached and semi-detached houses, runs at a very high overall level of efficiency and is designed for power-optimised operation.


When electricity is generated, heat is also produced, which in large, conventional power stations is generally lost as unused waste heat. CHP units such as the Vitovalor on the other hand make use of this waste heat for central and DHW heating. They therefore have a very high level of overall efficiency. Furthermore, there are no losses during energy transfer as the energy is used directly on site. Even the conversion from combustion gas to hydrogen is very efficient due to the absence of intermediate thermomechanical steps.

The constant electrical output of the fuel cell module is 750 W. A large proportion of the power demand can therefore be covered at all times. The Vitovalor works even more efficiently in combination with the Vitocharge power storage system. This can store surplus power for times of peak load which considerably increases independence from electricity suppliers. Alternatively, it is quite straightforward to export the surplus power to the public grid. The integral energy manager is self-learning and therefore optimises the level of on-site consumption.

Vitovalor Company


The Vitovalor consists of two units: a fuel cell module and a gas condensing module for covering peak loads. The two units can be transported separately, enabling fast installation even in basement rooms where space is tight. The first unit of the Vitovalor, made by Panasonic, houses the reformer, inverter and fuel cell stack (a series of multiple fuel cells). Before the direct current generated by the fuel cell is fed into the household power circuit, the built-in inverter converts it into alternating current.

The second unit of the Vitovalor serves primarily to provide heat during times of peak demand. That is, when it is very cold outside or when a lot of hot water is required at short notice. It consists of a gas fuel cell appliance, a DHW cylinder, a heat exchanger and a heating water buffer cylinder with integral indirect coil for DHW heating. Other components in the second unit are a weather-compensated control unit, hydraulic components and an electricity meter. Both units are supplied via a common gas line. They also share a common flue system, which makes installation as easy as for a wall mounted gas condensing boiler.

Cold combustion

The generation of heat and power in the Vitovalor fuel cell heating appliance is based on an electrochemical reaction between two elements: oxygen and hydrogen. The type of combustion that takes place in conventional boilers does not occur, which is why the process is also referred to as cold combustion.

Although a plentiful supply of hydrogen is available in nature, it does not occur in the form required for cold combustion in the Vitovalor. It must therefore be obtained from natural gas in an earlier process. Depending on requirements, Vitovalor can be operated with natural gas H or bio natural gas. The combustion gas supplied flows through a reformer built into the unit, which uses a catalyst to convert it into hydrogen in a two-stage reaction.

The first stage of the conversion process produces a mixture of hydrogen and carbon monoxide. In the second, downstream gas cleaning process, carbon monoxide is converted to carbon dioxide.

Vitovalor PT2 in a detached house

[1] Fuel cell module
[2] Peak load boiler
[3] Flue gas/ventilation air system
[4] Integral electricity meter
[5] Communication interface
[6] Electricity meter (bidirectional)
[7] Household power circuit
[8] Public grid
[9] Internet
[10] ViCare app
[11] Natural gas E
[12] Water

A renewable energy solution so trusted by DCR one of our own team have invested and installed the Vitovalor.

Having seen the benefits of the Vitovalor first hand, our Mechanical Director Lewis Morley has installed a Viessmann Vitovalor 300-P in his own property to realise the cost savings and energy saving efficiency’s provided by the Vitovalor.

Lewis is currently receiving real life significant cost savings against his energy bill proving the Vitovalor is an investment worth making.

Lewis is happy to discuss with any of our customers in detail how the Vitovalor will benefit your property.

Frequently asked questions about the Vitovalor

How reliable is the technology? Do I still need my electricity supply? In this section, we have collated the most frequently asked questions and answers about the Vitovalor.

Where does the hydrogen come from?

In addition to oxygen, the Vitovalor fuel cell needs hydrogen to operate. Hydrogen is found in almost all substances such as water and natural gas, and is the most frequently occurring element in the universe. However, on the Earth it only occurs in compound form. To be used as an energy source, hydrogen has to be separated from its compound. Natural gas has proven suitable as a source fuel for this. The hydrogen is extracted from the natural gas in an electro-chemical process and at the same time, separated from the other remaining gases. A more detailed description of the process can be found under How the Vitovalor works.

Is hydrogen dangerous?

Hydrogen and natural gas have many similar properties. Both can be used for combustion as well as made to explode. We make use of these properties for heating or to drive vehicles or generators, for example. Hydrogen is therefore no more dangerous than natural gas. No hydrogen is stored in the Vitovalor – all hydrogen produced is immediately consumed.

What happens if the fuel cell fails?

Will the rooms then stay cold? The Vitovalor fuel cell consists of two units. All the necessary components for the fuel cell and gas treatment are installed in one of the units. The other unit is a gas condensing boiler with a heating water buffer cylinder (170 litres) and a DHW cylinder (46 litres) for covering peak loads, plus a control unit. The two units are connected by a common gas line and can be commissioned separately. This means that the unit containing the peak load boiler can still be operated without the fuel cell. Were the latter to fail, the integral buffer and DHW cylinder would ensure a bridging time.

Can the Vitovalor also run on LPG?

The Vitovalor is a “low temperature” fuel cell. To put it more precisely, it is an LT-PEM fuel cell, which stands for low temperature proton exchange membrane. Theoretically, LT-PEM fuel cells can also run on LPG. However, the reformer inside the Vitovalor has been optimised for obtaining hydrogen from natural gas. Operation with LPG is therefore not possible.

Can I cancel my electricity supply if I install a Vitovalor?

With the possibility to generate a maximum of 30.8 kWh of electrical energy it can generate in a day, the Vitovalor can comfortably cover the base load of an average household. Due to peak loads, however, cancelling the electricity supply is not recommended. The peak load takes account of very warm days with a low heat demand or situations where a great deal of power is required within a short time. For example, such situations may arise if the kettle, oven and hairdryer are all needed at once. These appliances may only run for a brief time, but consume a lot of power. Without the availability of the conventional electricity supply, there could be bottlenecks and an impact on convenience at such times.

DCR are approved MCS installers of the Viessmann Vitovalor. GAS SAFE & NICEIC heating engineers and electricians form the install teams. We can provide the complete design and installation program in which we work with construction companies to provide the correct system for the end client.

DCR have extensive knowledge of operating across the UK, for blue chip companies or for the domestic client. 2018 has been a busy year nationally for DCR in which during periods we have completed numerous large projects simultaneously with over 500 miles between them.

Want to find out more about the Vitovalor 300-P ?

Contact us – our mechanical engineers are ready to help.

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