Ventilation systems and hygiene
When comparing the ventilation systems, some aspects on the topic of "hygiene" are worth pointing out.
Central ventilation systems with heat recovery require a continuous network of ventilation ducts which connect the ventilation unit with air intake and exhaust air valves throughout the entire house or apartment. But long air intake lines, for example laid in screed or suspended ceilings, often constitute a weak point.
In the summer months, especially in humid, thundery atmospheres, there is a danger that condensate will form in the heat recovery system, with can subsequently lead to undetected contamination by microbial growth. Investigations by the German Federal Environmental Agency clearly point out this potential danger.
(Source: Heinz-Jörn Moriske "Schimmel, Fogging und weitere Innenraumprobleme" (Mould, Fogging and other Problems in Interior Spaces), Fraunhofer IRB-Verlag, 2007)
In contrast to ventilation systems with heat recovery, exhaust air systems in combination with Regel-air® window vents do not have any long air intake ducts.
The air intake is guided directly into the room interior through the window rebates. In this way, the individual rooms are supplied with clean fresh air from outside.
Modern central exhaust air systems with sensor control for humidity and VOCs (volatile organic compounds), which are installed in combination with Regel-air® PLUS window vents as external air apertures, have significantly cheaper acquisition costs.
Important advantages of Regel-air® window vents
- all Regel-air® products are also suitable for retrofitting
- by opening the windows, the ventilation channels can be viewed at any time and are easy to clean
- the burglary protection of the windows is retained
- the outside appearance of the façade remains unchanged (protection of historic monuments)
- no maintenance, cleaning and follow-up costs