Residential ventilation / air conditioning

Controlled living space ventilation

For a healthy indoor climate with heat recovery


If the climate in your own four walls is right, the feel-good factor is also right.
Above all, this includes a good supply of fresh air. Because damp, stuffy and dusty indoor air is bad for your health, your well-being and even for your house. So it's high time to bring a breath of fresh air and save energy at the same time
with the controlled home ventilation. The small difference.

High living comfort thanks to efficient fresh air filters and sensor-controlled ventilation that always keeps an eye on the air quality. This ensures consistently pleasant air quality in your living space - and that completely automatically.

Controlled living space ventilation ensures a comfortable room climate and protects the building fabric


Controlled domestic ventilation (KWL) ensures regular air changes and consistently high air quality in a house or apartment. This is necessary because used air contains little oxygen, but other substances such as carbon dioxide and water vapor. However, oxygen is vital for the human body. In addition, high air quality promotes physical and mental performance and, last but not least, ensures a noticeable sense of well-being.

Technology of a central controlled living space ventilation

Fresh air in, stale air out - that's how it works

1. Outside air intake
Fresh air is transported into the system via the outside air intake.

2. Pre-tempering (example)
The air is preheated by geothermal energy using an optionally upstream geothermal heat exchanger (ValloFlex GEO air or brine).

3. Heat recovery
In the heat exchanger of the ventilation device, heat is extracted from the air that is sucked off, used and polluted, for example from the kitchen, bathroom, shower or toilet. This is then released into the fresh air (up to> 90% heat recovery). Both air flows are completely separated from each other when it comes to the transfer and transfer of heat. The exhaust air is filtered and discharged outside. CO2 and humidity sensors (optional) constantly monitor the room climate and react in good time if health-damaging values are exceeded.

4. Air distribution
The preheated, finely filtered fresh air is transported to the rooms via the ValloFlex air distribution system. ValloFlex supply air valves deliver this fresh, pre-tempered air as required and draft-free to rooms such as living rooms, bedrooms, children’s and work rooms.

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