Moisture out, fresh air in.

How a well-designed ventilation network ensures clean indoor air

By Jürgen Böhm, Head of Sales Chimney Systems and Ventilation Networks, and Bianca Marklstorfer, Marketing Specialist

Ergoldsbach. Airtight building envelopes are now standard—and at the same time a challenge for indoor air quality. While energetically efficient, they quickly lead to stale air, moisture problems, and in the worst case, mold if no controlled ventilation is provided. For heating engineers, it is clear: ventilation is an essential part of the overall building system.

A large proportion of new buildings require ventilation measures in accordance with DIN 1946-6. Air pollutants—for example from furniture, flooring, or adhesives—accumulate in indoor air if ventilation is insufficient. In addition, moisture is constantly generated: through cooking, showering, washing, or simply by the occupants themselves. Window ventilation cannot meet this demand consistently or efficiently. What is needed are solutions that combine air quality, energy efficiency, and comfort.  

Rethinking ventilation: the network makes the difference

The key factor is not just the ventilation unit itself, but above all the air distribution system behind it. A well-designed ventilation network ensures that fresh air is evenly distributed throughout the house—hygienically, quietly, and without drafts. The ERLUS Via Vento S system addresses exactly this: with a central, solid shaft design and clearly structured cross-distribution instead of complex duct systems. For skilled tradespeople, this means clean planning even in CAD programs and installation during the shell construction phase. For homeowners, it means no visible technology, no loss of living space, and easy cleaning.

Healthy living in focus: Sentinel-certified

An increasingly important topic in consultation is healthy living. Homeowners are specifically asking for low-emission materials and certified systems. ERLUS Via Vento S is tested by the Sentinel Holding Institute and meets strict requirements for low-emission construction products. The certification evaluates, among other things, material emissions and their impact on indoor air. For installers, this becomes a strong sales argument: in addition to energy efficiency and comfort, the aspect of healthy indoor air can be reliably demonstrated.

Installation-friendly and flexible

On the construction site, the system impresses with its clear structure: perfectly coordinated components, defined duct routes, and solutions even for demanding constructions such as exposed roof trusses. At the same time, heating engineers remain flexible, as the network can be combined with almost all central ventilation units. This reduces interface issues and simplifies coordination with other trades.

Hygiene without major effort

An often underestimated aspect is maintenance. While many systems can only be cleaned using special equipment, everything in ERLUS Via Vento S is easily accessible. Inspection openings in every duct and a well-designed cleaning concept allow maintenance using standard tools. For homeowners—who can even carry out cleaning themselves using a vacuum cleaner and the supplied cleaning set—this means lower follow-up costs; for installers, less explanation effort and a system that works reliably in the long term.

Comfort that convinces

In terms of living comfort, a well-designed ventilation network offers clear advantages: no drafts, hardly noticeable noise, and continuously fresh air. Combined with heat recovery, energy remains in the house while moisture and odors are reliably removed. This is particularly beneficial in noisy locations, as windows can remain closed while maintaining good air quality. Allergy sufferers also benefit: pollen and dust stay outside.

Conclusion: Smart technology, easy installation during shell construction

A modern ventilation network must do more than just transport air. It should be easy to install, remain hygienic in the long term, and be flexible in application. At the same time, it must meet increasing demands for energy efficiency and healthy living. The ERLUS Via Vento S system delivers exactly that. For heating engineers, this creates a clear opportunity: positioning ventilation not just as a technical necessity, but as a compelling quality feature—with added value for healthy indoor air.