Air is life – time for our decentralised ventilation system Air is the purest elixir of life. Even more so in today’s world, where we spend the greater part of our lives in enclosed spaces, the right air quality plays a critical role. But how can this be achieved? Quite simply with our innovative freeAir 100e ventilation system, to which you can optimally add the FreeAir plus transfer unit. This decentralised ventilation system with heat recovery allows you to create a healthy indoor climate – in new builds, renovation projects and in the commercial sector. See the economic, structural and pro-health benefits of our decentralised ventilation system for yourself. And this is how our ventilation system works: The FreeAir ventilation system combines the benefits of centralised and decentralised ventilation units. It does without incoming air ducts and as a rule needs only one external wall opening. The system consists of the FreeAir 100e external wall unit and the FreeAir plus transfer unit. Both appliances work completely independently, controlled by sensors, and together make the perfect team for domestic ventilation. The FreeAir 100e ventilation unit is certified both as a centralised and a decentralised ventilation unit according to EN 13141-7 and EN 13141-8. Unlike comparable ventilation systems, the FreeAir 100e features an integrated sensor control system. This measures CO2, temperature and humidity for several areas in the building. The consequence? Thoroughly precise and demand-based ventilation. The freeAir ventilation system not only extracts used indoor air, but at the same time also lets healthy fresh air flow into your rooms from outside. But never worry about too much cold air: Because in accordance with the ingenious principle of heat recovery, the FreeAir 100e ventilation unit heats up the inflowing fresh air. This way you are supplied with pleasant air even in winter. In addition, the intelligent FreeAir plus transfer unit determines the air quality in adjoining rooms and ensures the air is exchanged at the right time. This fan fitted in the partition wall enhances the FreeAir 100e ventilation unit in a unique way. Other rooms are connected to the domestic ventilation system without any ventilation ducts. 2-room apartment with a FreeAir 100e ventilation system and a FreeAir plus transfer unit Greater energy efficiency through effective heat recovery At the heart of our ventilation unit is the highly efficient heat exchanger, which is otherwise used in centralised systems. This facilitates the heat recovery of more than 90 % from the used, extracted air. This is used to heat the fresh air supplied from outside. The heat recovery process makes use of the counter flow principle: Warm room air and cold outside air flow past each other in separate ducts – their temperatures converge, which leads to a highly efficient heat recovery process. The thermal efficiency of heat recovery as per EN 13141-7 and EN 13141-8 is a remarkable 86 %. A considerable proportion of the heating energy can be saved thanks to this efficient heat recovery. Besides the great heat recovery, two other aspects ensure the outstanding energy efficiency of the FreeAir ventilation system: The low operating power demand as well as the option of cascade ventilation. The low heating demand also allows decisive advantages for the building energy certificate and the KfW funding category. Please feel free to contact us for further information. • Decentralised ventilation unit with a more efficient heat recovery level of over 90 % • Counter flow principle in the highly efficient heat exchanger for greater efficiency • 86 % thermal efficiency of heat recovery • Certification in accordance with EN 13141-7 and EN 13141-8 • Remarkable saving on heating costs • Low operating power demand • Option of cascade ventilation Cross-section of FreeAir 100e ventilation system with counterflow heat exchanger Decentralised ventilation system with integrated sensor control With today’s airtight construction methods, pure window ventilation is no longer sufficient to ensure the required minimum air exchange. A good thing then that our FreeAir 100e ventilation unit supplies your interior with sufficient fresh air 365 days a year – and does so in a way that is adapted to your individual needs. The FreeAir ventilation unit features eight integrated sensors as standard: one sensor each for CO2 and air pressure, two humidity sensors as well as four temperature sensors. The sensors provide you with several benefits and have one objective: fresh air at all times! Demand-based control using eight sensors The demand-based sensor control constantly measures and regulates key air parameters. The sensors fitted on the ventilation system with heat recovery ensure that the required amount of fresh and preheated outside air permanently flows into residential and business premises, whilst simultaneously extracting used air. The ventilation system automatically detects changes in the air quality, thereby optimising the supply of air and adjusting the ventilation to your individual needs. This ensures a healthy indoor climate and a constantly pleasant air quality. Further, the integrated sensor control system makes external ducts, boxes and control units superfluous. The sensor-controlled demand-based system also prevents over-ventilation and eliminates mildew and air that is too damp or too dry. Energy-efficient ventilation system The energy efficiency of the ventilation unit is also remarkable: the FreeAir ventilation system works with low power as soon as there are no persons in the building. Not only does this considerably reduce the energy required to ventilate the living space – you also save valuable heating energy. It is no wonder then that the FreeAir ventilation system with heat recovery received the top grade A+ pursuant to the 2016 EU Ecodesign Directive and was certified for passive houses in 2014. Shhh. Can you hear the ventilation system