Ventomaxx Decentralised ventilation: how it works and its advantages

Decentralised ventilation: Modern demands for efficient indoor air control and energy-saving measures have led to decentralised ventilation systems becoming increasingly important. But what does the term ‘decentralised ventilation’ actually mean and how do these innovative ventilation systems work in practice? A decentralised ventilation system is fundamentally different from conventional centralised systems. We will take a closer look at the future of indoor climate based on the functionality and the many advantages of this technological solution. Learn more about the innovation behind decentralised ventilation and discover how these advanced systems can increase both comfort and energy efficiency in your premises.

The basic principle and function of decentralised ventilation

A decentralised ventilation system, or rather a decentralised ventilation system, works independently of a central system and is installed directly in the room to ensure continuous air circulation. The basic principle is that air extraction and air supply take place simultaneously through separate fans, which usually work with heat recovery. The way a decentralised ventilation system works is based on a simple principle: fresh air is drawn into the room through a ventilation inlet, while stale air is expelled to the outside through a separate outlet. A heat exchanger ensures that temperature and humidity are efficiently exchanged between the incoming and outgoing air. Technical components such as filters ensure that dust and pollen are removed from the air, while sensors monitor the humidity and CO₂ levels in the room. If necessary, the ventilation system automatically adjusts the air speed and airflow to ensure an optimal indoor climate. Effective humidity and CO₂ control helps to ensure that the air quality in the room is always at a high level. This is particularly important for the health of the residents and prevents the formation of mould and unpleasant odours. Sound insulation and sound attenuation play a crucial role in decentralised ventilation systems to ensure a pleasant and quiet atmosphere in the room. Modern systems provide effective sound attenuation so that the ventilation is barely audible and does not affect living comfort. The advantages of decentralised ventilation systems lie primarily in their flexibility, ease of installation and individual control options. Compared to centralised ventilation, decentralised systems provide targeted air circulation in individual rooms and ensure efficient energy use. Decentralised ventilation enables efficient ventilation of homes, offices or other buildings by specifically addressing the specific requirements of each individual room. The separate installation of the ventilation units ensures controlled air circulation and minimises the formation of moisture and pollutants. This provides a flexible and adaptable solution for effective air supply in different environments, with each room being considered individually.

Technical components in detail

A decentralised ventilation system uses a variety of technical components that work together to ensure efficient air circulation. The ventilation units installed in the individual rooms play a central role. These units are equipped with highly efficient fans that ensure a continuous exchange of air. 1. Heat recovery system:

Heat recovery is one of the central elements of modern decentralised ventilation systems. This is usually based on a ceramic storage unit that is integrated into the air flow. During the exhaust phase, the ceramic core stores the heat of the outgoing room air. In the subsequent supply air phase, the cold outside air is passed through this storage unit and preheated before it enters the room.
Modern heat recovery systems can be up to 90% efficient. This means that almost all the heat energy in the room air is recycled, which results in considerable savings, especially during the heating season.

2. Fans:

High-performance fans are used to exchange air. These are often speed-controlled, which allows for precise control of the air volume. They work in combination with the heat storage unit in alternating operation or as separate supply and exhaust air units.
The choice of fan type is crucial: high-quality EC (electronically commutated) motors provide particularly energy-efficient and quiet ventilation, making them suitable for use in both residential and commercial properties.

3. Air filter:

High-quality filters prevent particles such as dust, pollen, mould spores and other allergens from entering the interior. They clean the outside air before it enters the interior. Particularly in urban areas or near busy roads, high-quality filters are a must.

The technical components of a decentralised ventilation system work together harmoniously to ensure effective air quality and a pleasant indoor climate. Thanks to intelligent control and the use of the latest technology, these systems offer a wide range of advantages over conventional ventilation systems.

Controlling humidity and CO₂ levels

Controlling indoor humidity and CO₂ levels is an important part of an efficient ventilation system. Decentralised ventilation systems are able to accurately monitor and adjust these parameters to ensure an optimal indoor climate. Sensors that measure humidity and CO₂ enable the system to react automatically and control the air supply accordingly. A high level of humidity in the air can lead to mould growth and unpleasant air quality. This can be avoided by controlling the humidity, thus maintaining a healthy indoor climate. The CO₂ content in the air is a good indicator of air quality. High CO₂ concentrations can lead to concentration problems, fatigue and poor air quality. Decentralised ventilation systems make it possible to keep the CO₂ content constantly in the optimum range by supplying fresh air and removing stale air as needed. Intelligent control of humidity and CO₂ levels not only ensures a pleasant indoor climate, but also the health and well-being of the residents. Precise adjustment of the ventilation to the individual needs of the room ensures optimal comfort.

Sound insulation and sound absorption

When it comes to decentralised ventilation systems, sound insulation and sound absorption play a crucial role. High-quality sound insulation effectively reduces disturbing external noise, ensuring a pleasant level of quiet indoors. This is particularly important in rooms where restful sleep or concentrated work is required. The decentralised ventilation solutions from Ventomaxx score points with specially developed sound-absorbing materials and constructions that provide a high level of sound insulation. The ventilation units are designed to operate at a low noise level even at high air flow rates. This ensures that the comfort of the users is not affected and a harmonious room atmosphere is created. Efficient sound insulation ensures that external noise is not a disturbance even when the windows are open. This way, a quiet living or working environment can be created even in urban areas or near busy streets. In addition to sound insulation, sound insulation also plays an important role. Sound insulation refers to how well the ventilation system separates noise from different rooms. Effective sound insulation creates a clear separation of the acoustic environment, which is of great importance in apartment buildings, office buildings or hotels. Sound insulation should therefore not be underestimated, particularly when planning buildings in noisy areas or in urban environments where external noise can be a significant nuisance.

Advantages of decentralised ventilation compared to centralised ventilation

One of the major advantages of decentralised ventilation solutions is that the air supply can be individually controlled in different rooms. With centralised systems, the air supply for the entire building is controlled uniformly. In contrast, decentralised ventilation enables demand-oriented ventilation of individual rooms. This means that the air quality in each room can be optimised separately. Modularity and flexibility: decentralised systems are particularly suitable for retrofitting because they do not require a central ventilation shaft. The individual components can be installed and adapted as needed. This enables a tailor-made solution that is precisely tailored to the requirements of a building. This saves space and allows the ventilation to be adapted to the respective room conditions. In contrast, central ventilation systems are often rigid and inflexible to adapt. Saving energy through heat recovery: The system is highly energy efficient due to the targeted control of airflows and the heat recovery option. Compared to centralised systems, which can often incur unnecessarily high energy costs, the decentralised variant offers a sustainable and cost-saving solution. Not least in low-energy buildings, decentralised ventilation systems with heat recovery are ideal because they minimise heat loss and significantly increase the energy efficiency of the building. Low installation costs: Compared to centralised systems, which require extensive duct networks, the installation costs for decentralised systems are often lower. They are suitable for both new buildings and for the renovation of existing buildings. Sound insulation: In addition, decentralised ventilation offers improved sound insulation and soundproofing compared to centralised alternatives. Since the ventilation units are installed in each room, the transmission of noise between rooms is minimised, resulting in a quieter and more pleasant room climate. Easy maintenance: Since each unit works independently, maintenance is easier and more cost-effective. Filters can be changed and cleaning carried out individually as required, without the need to shut down the entire system. Overall, decentralised ventilation offers a number of advantages over centralised ventilation systems, including individual control, efficiency, flexibility, cost savings, sound insulation and easy maintenance. These points make the decentralised variant an attractive and forward-looking solution for optimal air quality in buildings.

Decentralised ventilation: how it works and its advantages