Residential ventilation

Whether centralized in new buildings or decentralized in existing buildings - controlled ventilation ensures a comfortable indoor climate, protects health and extends the service life of the building fabric. As an innovative world market leader, LUNOS offers you a comprehensive range of highly effective decentralized and centralized ventilation solutions for your premises and provides you with comprehensive advice on all questions.

Uncontrolled living room ventilation

Uncontrolled residential ventilation includes ventilation through open windows, joints and ventilation shafts. There is no support from technical aids. Air exchange takes place solely through the wind and thermal buoyancy.

The main disadvantages of this form of ventilation are that heat is released with the stale air, the ventilation volume is difficult to control depending on the weather conditions, and opening the windows is often out of the question, for example, when there is a lot of noise or sultriness.

Controlled residential ventilation - a prerequisite for a comfortable indoor climate

Modern buildings are being built ever more densely. Accordingly, the number of openings through which natural ventilation can take place is decreasing. This in turn leads to an increase in the proportion of stale, oxygen-poor air with increased carbon dioxide and water vapor content. Typical consequences are an impairment of mental and physical well-being, an increased risk of allergies, and damage to the building fabric due to mold. These risks can be countered with effective controlled ventilation.

Controlled living space ventilation

Controlled residential ventilation uses technical aids such as supply and exhaust air systems. Their importance is increasing, especially due to the Building Energy Act (GEG), which came into force on 01.11.2020, according to which buildings must be permanently air-impermeable. This requirement rules out many forms of uncontrolled joint ventilation from the outset.

Technical residential ventilation systems are implemented in centralized and decentralized form.

Central living room ventilation

In central systems, fresh air is supplied to all rooms via a single unit. This central unit, consisting of a ventilation unit and fans, is installed in the wall or ceiling and connects to the individual rooms via a connected air distribution system.

The ventilation unit draws in fresh outside air and directs it via the integrated heat exchanger to the supply air rooms (living rooms, children's rooms and bedrooms), while the warm exhaust air from the exhaust air rooms (kitchen, bathroom, WC) is drawn into the unit and also directed via the heat exchanger. Thus, there is a transfer of heat from the exhaust air to the supply air and thus a recovery. The cold exhaust air is removed to the outside via exhaust air ducts.

The main advantages of the technology are its large air volume flow, low noise level and easy maintenance. Due to their comparatively high planning costs, they are mainly installed in new buildings. However, it can also be used in old buildings in the course of modernization work.

Decentralized living space ventilation

The decentralized residential ventilation is characterized by the fact that it can be installed specifically in individual rooms. As a rule, it does not have an air duct system. It is installed directly in the outer wall. Depending on how it works, there are three types - systems with heat recovery, exhaust fans and combined systems.

Fans of the first category are equipped with a heat exchanger that transfers the heat from the exhaust air to the incoming outside air. Thanks to their efficient operation, up to 90 percent of the heat can be recovered.

Exhaust air systems are used primarily in functional rooms such as bathrooms, kitchens and utility rooms. They transport the used humid air by means of a fan either directly into the open air or via exhaust air shafts, while fresh air is fed in. At LUNOS, they are also available as combined systems with heat recovery.

Since decentralized ventilation systems can also be retrofitted with little effort, they are also very suitable for old buildings.

Discover the LUNOS product portfolio

At LUNOS you will find a variety of different ventilation systems for controlled residential ventilation. Our portfolio includes decentralized systems with and without heat recovery, centralized ventilation technology for apartments, exhaust fans, facade elements and all associated components and controls.


Decentralized fans for living room and bedroom

For living rooms and bedrooms, for example, we offer our e²60, which is one of the smallest decentralized fans with heat recovery on the market. Its pressure-optimized design ensures a constant volume flow even in areas with high counterpressures, such as high altitudes or coasts. In addition, with a standard sound level difference of up to 67 dB, it offers the best values in terms of sound insulation.

Bathroom and toilet

For bathrooms and toilets, we recommend our Silvento ec model, among others. This exhaust air unit with a very efficient mode of operation can already be operated with very low volume flows. By selecting different control boards, the unit can also be adapted to different requirements.

Our ego model is also ideally suited. It provides the highest air quality with heat recovery and is one of the smallest units in its segment worldwide.

Competent advice for residential ventilation

LUNOS is your expert for all types of residential ventilation. Call us now and let us advise you comprehensively. We will be happy to recommend the ventilation solution that exactly fits your needs.