An optimal indoor climate begins with sufficient fresh air

System solutions for natural and mechanical ventilation

The importance of ventilation to our well-being has received increasing attention in recent years - and rightly so. Buildings should be attractive and functional, but also contribute to the health of their occupants and users. An optimal indoor climate starts with good ventilation. Regardless of whether natural or mechanical ventilation is chosen.

Insulation versus ventilation

Architects know that the ‘dance’ between insulation and ventilation sometimes creates difficulties. Buildings are becoming increasingly better insulated. This is positive for the energy bill and contributes to achieving sustainability goals, but it is also essential to take into account good indoor air quality and the necessary ventilation options. Gretsch-Unitas (GU) Netherlands is happy to contribute to this.

Window open? Natural ventilation

“The most natural variation of ventilation is opening the windows,” knows Marc van Oijen, Architectural Advisor at GU Netherlands. “VENTUS, our system for opening inward-turning skylights, offers a solution in this case. This system can be operated both manually and (in combination with the ELTRAL S) electrically and is suitable for almost all windows. Regardless of whether they are top-hinged or bottom-hinged. The narrow design also makes the system suitable for higher installed fanlights that open inward.”

Water- and noise-proof, energy-efficient and safe

The internal locking mechanism in the drop scissors ensures maximum pressure on the window surface, he says. “This meets the high requirements for wind and water tightness, sound insulation and energy efficiency. With the addition of a uni-jet all-around fitting, burglary protection is also increased.”

Easy installation

The VENTUS system is easy to install and versatile in its operation, according to Van Oijen. “Lockable and infinitely adjustable tilt positions guarantee perfectly controlled ventilation. If desired, the drop bars can be easily detached for cleaning.”

Controlled ventilation

“At GU Netherlands, we believe in innovative and reliable solutions for safety, ventilation and comfort,” Van Oijen emphasizes. “In addition to solutions for natural ventilation, we also offer electronic chain drives that form the pivot of modern building functions: from smoke and heat evacuation (RWA) in emergency situations to daily, controlled ventilation in living and working environments. With their compact design and pleasant appearance, our chain drives are ideally suited for the electromotive opening of windows, both for external air ventilation and for safety purposes. Whereas the concealed versions are fully integrated into the window frame and are suitable for all frame materials, the surface-mounted versions are distinguished by their flat and compact design, which fits perfectly into modern façade architecture.”

Architects who choose GU chain drives benefit from:

- Dual functionality: supports both rapid smoke evacuation in case of fire and daily natural ventilation;

- Powerful performance: windows open quickly and reliably, exactly when needed;

- Discreet and stylish: slim design and quiet operation fit into any architectural style;

- Smart control: fully integrate with building management systems, for optimal control in any situation;

- Highest requirements: whether for new construction or renovation, GU provides complete solutions that meet the highest requirements such as the European RWA standard EN 12101. Gretsch-Unitas, better known as GU, is a leading supplier in the field of window and door technology, automatic access systems and building management systems. The GU group manufactures and distributes, among others, building hardware, locks and locking and access control systems of the brands GU, GU automatic, FERCO, GEMOS and BKS. The product range also includes an extensive range of RWA components for safe smoke and heat extraction in case of fire.