Use what's given

Do it like a nature, charge up your house and live with energy from the sun

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What is an Energy Flow Wall system?

Energy Flow Wall is a new revolutionary concept where the main source of energy is the sun, helping to achieve the best indoor climate and the lowest energy cost by ventilating, heating, and cooling a building.

The components of the system are:

  • Sun Walls with containers filled with PCM (Phase Change Material)
  • Ventilation Windows
  • Electronic Control System of indoor climate and energy
  • Extraction heat pump

Component Functions:

Sun Wall

Further developments in Energy Flow Wall have now added a Sun Wall to the system, which consist of containers with Phase Change Material. The PCM is able to collect and store energy as a heat from the sun during the daytime to be released during the night, and in that way supply the building with energy when it is most needed.

The Ventilation Window

Invented in 2004, with the intention of supplying a building with fresh preheated air instead of the installation of a ventilation system. The Ventilation Window can supply the building with fresh air from the outside both night and day, but the sun can only preheat the ventilation air passing the window as long as it shines. The rest of the time, the ventilation air is only preheated by the heat loss from the building.

Electronic Control System

To ensure that all rooms are ventilated and heated/cooled, the system has sensors to measure temperature, humidity and CO2 level in each room.

To regulate the temperature and indoor climate in each room, the owner of the building has a mobile app and/or a Control Panel.

In particular situations, parameters control may be done by the service team at Energy Flow Wall ApS.

Heat Pump

The purpose of a heat pump located inside the building is to ventilate and reuse the heat from the warm air before it is blown out from the rooms. That function allows avoiding heat loss and significantly improving indoor climate. Moreover, It creates and underpressure and stabilise the temperature, which makes heat pump efficiency even higher.

All the behaviour of heating sources and the extraction heat pump is under electronic control and constantly regulated by a control system designed specifically for a particular building.

Sustainability and Health

Our planet receives much more energy from the sun every day than humans and nature have been able to use. Only new technology can prove that human behaviour doesn’t need to use fossil energy, and that’s exactly where Energy Flow Wall has its focus.

Sensor technology, heat pumps, and electronic control of all rooms in the building offer the best conditions by ventilating each room, controlled after need, and with very low heating costs. The Energy Flow Wall can save about 80% in energy costs, at the same time achieving the best environments for both humans and the building.

Fresh air from the outside is preheated with solar energy before entering the room. This happens even in the nighttime, as energy from the sun is collected and stored in the Energy Flow Wall elements during the daytime and released during the cold nights when the sun doesn’t heat the building any more.

As every room is ventilated all the time, and regulated after weather conditions, temperatures, and human occupancy, mold growth and illness are an infrequent occurrence.



Dear visitor, thank You for Your interest in Energy Flow wall. We want to make for You the best possible product in the future, and it would be fantastic to know something about You. Whenever You are an engineer, constructor, architect, businessman, innovator or so, we would be more than grateful, if You could present yourself to us.

It would enormously help to discover, who our potential customers are and develop our product perfectly for You!
Please input your name, email and short presentation message.

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We deeply appreciate your engagement in the global sustainability and Energy Flow Wall.

Best regards,
Whole Energy Flow Wall Team