Homeowners Professionals
Vitovalor PT2

Heat and power from a single appliance

Vitovalor PT2

Fuel cell heating system

The Vitovalor PT2 fuel cell heating system generates electricity and heat in one, making it the ideal energy centre.

Output: 750 Wel, 0.9 to 30.8 kWth
Efficient and environmentally responsible
Produce electricity and save energy costs
H2-ready 20 %
Efficient and environmentally responsible

Use the technology of the future today

Generate and consume electricity yourself

And save energy costs this way

Up to 40 % lower energy costs

Compared to gas condensing technology

Space efficient design

With small footprint

Increasing independence from the electricity price

Through self-generated power

For the modern detached and two-family house

With 30.8 kW, Vitovalor PT2 offers sufficient thermal output

High state subsidies

Reduces acquisition costs

Control via app

With your smartphone or tablet

Maximum ease of use

With the generous 7-inch colour touch display

Energy efficiency class for heating: A++

Low heat extraction due to significantly higher electrical efficiency

The Vitovalor PT2 fuel cell heating system from Viessmann

Vitovalor PT2 (formerly Vitovalor 300-P), the fuel cell from Viessmann, is the ideal energy centre for the modern detached and two-family house. The system combines heat and power generation on a very small footprint. The Vitovalor PT2 offers considerably higher electrical efficiency than that available through current combined heat and power (CHP) solutions. This reduces the amount of heat extracted and makes the fuel cell heating appliance particularly suitable for use in new build and renovation projects.

The Vitovalor PT2 is the innovative alternative for decentralised power generation. Against the backdrop of discussions on energy and rising electricity prices, this solution is steadily gaining in relevance. In the future, CHP technology will be an important part of power generation.

Vitovalor PT2 is the fuel cell for larger homes

With 30.8 kW, the Vitovalor PT2 provides enough thermal output to cover the entire heat demand of a detached or two-family house. The maximum amount of electrical energy generated over the course of a day (18 kWh) is enough to cover the basic needs of an average household. The integral gas condensing boiler switches on automatically when the heat generated by the fuel cell module is insufficient, such as at peak times or when a lot of hot water is required for a brief period.

Vitovalor scoops two more UK awards in 2018

The fuel cell mCHP appliance won the 2018 Innovation of the Year: Technology - Physical and also Home Energy Product of the Year, at the Energy Awards ceremony in London.

The awards ceremony brought together over 600 of the most senior operators in the energy market, both local and international, to recognise and celebrate the very best of the energy industry. For more information, see Energy Awards 2018.

The integrated range of solutions for Vitovalor PT2

Benefit from the value added services and digital services of Viessmann's integrated range of solutions.

ViCare app

The ViCare app provides intuitive heating control. Green for go – the user can see at a glance in the app whether their heating system is working as it should.

More about the ViCare app

ViGuide app

ViGuide is an app for trade partners. It has numerous functions for monitoring and controlling systems in both detached houses and apartment buildings and provides rapid access to Technical Service.

More about the ViGuide app

Connectivity Inside

Connectivity Inside is the integrated WiFi interface for operating and servicing systems using Viessmann apps.

More about Connectivity Inside

How the Vitovalor PT2 works

The Viessmann Vitovalor PT2 basically uses the principle of combined heat and power generation. It thus generates electricity and heat at the same time. The prerequisites for this are oxygen and hydrogen obtained from natural gas. This is because, unlike conventional heating systems, so-called "cold" combustion occurs. This means that through a chemical reaction of oxygen and hydrogen, chemical energy is converted to thermal as well as electrical energy. You can find out exactly how this works under How the fuel cell works.

The design of the Vitovalor PT2 fuel cell in detail

The Vitovalor PT2 fuel cell heating appliance consists of two units: the fuel cell module and the peak load module with gas condensing boiler, integral 220 litre stainless steel DHW cylinder, plus hydraulics, sensors and control unit. The units are compact, visually matched and together require a footprint of only 0.72 square metres.

The Vitovalor PT2 fuel cell heating system

Central source of information – the control unit of the Vitovalor PT2

The Vitovalor PT2 is equipped with a large colour touchscreen that allows you, as the system owner, to keep an eye on everything – from system pressure, boiler temperature of integrated peak load boiler, flow temperatures of the various heating circuits, to the current DHW temperature. In addition, the control unit provides information about the outside temperature as well as the thermal output of the fuel cell itself. If you connect the system to the ViCare app, you can conveniently control and monitor this function while on the move.

In addition, the Vitovalor PT2 has an integrated electricity, gas and heat metering function. This is particularly useful for providing billing information for state electricity subsidies and energy tax rebates.

Vitovalor PT2 control unit

Self-learning energy manager – an advantage of the Vitovalor PT2

A major advantage of the Vitovalor PT2 is the integrated energy manager, which is capable of learning and reacts to the individual needs in the home. The Vitovalor only starts when sufficiently long runtimes are expected. This ensures that the fuel cell produces electricity that can actually be consumed within the home.

Energy transition – a community effort

There are many good reasons to generate your own electricity. These include greater independence from rising electricity prices, fossil fuels and conventional power supply utilities, as well as making your very own contribution to the energy transition. With ViShare, you become part of the Viessmann Group's Energy Community and purchase low-cost 100% green electricity. The contractual partner in the ViShare Energy Community is Energy Market Solutions GmbH (EMS), a subsidiary of the Viessmann Group.

Product details

Electrical output

Fuel cell module: 705 W

Thermal output

Total output: 0.9 to 30.8 kW (fuel cell module: 1.1 kW)


Electrical efficiency of fuel cell module: 37%, overall efficiency of fuel cell module: up to 92% (Hi) [net cv], standard seasonal efficiency of peak load boiler: 98% (Hs) [gross cv]

Energy efficiency class

Heating: A++ | DHW heating: A+


Natural gas E(H) / LL(L)

Application area

Detached or two-family house, new build with low heat requirements

DHW heating

Integral stainless steel DHW cylinder with 220 litre capacity


Weather-compensated control unit with large colour touchscreen

Additional features

Integral electricity, gas and heat metering (to provide billing information for state subsidies and energy tax rebates)

Product cross-section
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