VentoVind™ is a patented method for adaptive controlled ventilation that guarantees that
ventilation only takes place when it benefits the attic space. The supply air system ensures
ventilation at the right times while establishing a positive pressure scenario in the attic that prevents
the travel of moisture up from the residence. The technology works best if the attic is sealed as
tightly as possible where the aim is that all ventilation occurs via the VentoVind™ system. The
system's mechanical parts consist of a controlled supply air fan and a mechanical or motorised
exhaust air damper. The supply fan is powered and the speed controlled via a control unit placed
inside the attic. Sensors that measure the outdoor climate and the climate in the attic are connected
to the control unit. The control unit reads off the sensors and determines, via an algorithm, whether
the ventilation should be open or closed, and also controls the fan speed accordingly. In this way, the
ventilation is optimised to the temporary ventilation requirement and as little energy as possible is
consumed. The ventilation system is only operational when the moisture conditions are beneficial for
ventilation using outdoor air.
Auxiliary dehumidifier
To ensure satisfactory drying even in very unfavourable conditions, VentoVind™ can be
supplemented with a backup dehumidifier. This is an option and requires extra wiring-installation.
The VentoVind™ system is pre-set so that the dehumidifier is put into operation as required, i.e. only
when drying with adaptive ventilation is not able to lower the humidity below the set level. Only
dehumidifiers intended for fixed installations in cold attics are recommended for this type of
installation.
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