A Ventilation Window has patented vents cut discreetly into the frame. The fresh air vents were developed and tested in Denmark to meet national building regulations and adapt to the exigencies of Danish weather conditions.
Fresh air enters through a vent at the base of the outside of the frame. Then the air then passes up between the inside windowpane and the external double-glazing panel. The air rises as it heats up. At the top of the frame there is a set of vents that automatically regulate the flow of air into the building.
A filter in the air intake prevents insects and coarse dust particles from entering the indoor climate. The filter is easy to remove for cleaning. The Ventilation Window itself filters finer particles of dust in the outdoor air. Up to 80 % of fine dust particles fall to the bottom. Vacuum clean to remove.
The vents need no power. They are controlled by wax motors, called actuators. The actuators adjust themselves depending on the outdoor temperature. They expand in response to heat and retract in cold weather. The motor is sealed inside a membrane and therefore requires no maintenance.
The indoor vents on the top part of the window frame must remain open. However, it is possible to close these vents temporarily, e.g. during a storm, if you find that the wind whistles through them and causes draughts, even when the windows’ automatic storm vent is activated.
It is important to allow air to exit the building. This can be achieved with ordinary ventilation ducts in your kitchen and bathroom. However, to reap the full benefit of your Ventilation Windows, we recommend that you install mechanical extractor fans that ensure that there is a constant flow of air. It is also important that air can pass freely under all internal doors.
We recommend PAX Calima or Intellivent SKY fans.