Renson® window ventilation systems
Naturally fresh air for an atmosphere of well-being
In almost half of all buildings, humidity levels are too high, which increases the risk of moisture problems such as mold growth and condensation. This, in turn, can lead to structural damage and health problems.
Constant and controlled air circulation can achieve a pleasant and healthy indoor climate. Dirty, humid indoor air is directed outside and continuously replaced by fresh outdoor air. This aspect is becoming increasingly important in new buildings due to good insulation – after all, good air quality means quality of life.
SFS and Renson® offer the right window ventilation systems for various requirements. The high-quality Sonoslot is a self-regulating sliding vent that can be easily processed and finished. The Invisivent® range is integrated into the window frame, enabling a fresh air supply with high sound insulation. When it comes to decentralized window ventilation with heat recovery, Endura® Twist is the right answer.
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i-Flux technology
i-Flux technology offers maximum comfort with minimum energy loss. The self-regulating valve, which reacts to pressure differences, means that the airflow is independent of the wind. The airflow can also be regulated using the manually adjustable inner flap. The shape of this flap directs the airflow upwards, which ensures good distribution in the room.
Sonoslot® – Self-regulating and sound-insulating sliding vents
Sonoslot® and Sonoslot® Max are part of the sliding vents range. The products are made of aluminum and can be powder-coated in any color. Both consist of a sliding vent on the outside and inside and a noise-absorbing plastic duct. This sliding vent combination is suitable for all window depths and can be used for wood, PVC, and aluminum windows. The aluminum sliding vent on the outside is self-regulating, so the incoming airflow remains almost constant even at high wind speeds, and drafts are avoided. It is also perforated and thus serves as an insect screen. Sonoslot® is available in lengths of 275, 375, 475, and 700 mm, and Sonoslot® Max, which offers increased sound insulation performance, is also available in 700 mm.
Invisivent® – the hinged ventilation system on the frame
This ventilation system is available in two basic versions: Invisivent® AIR and Invisivent® COMFORT. Both variants are acoustically, thermally, and energy-efficient window ventilation systems that can be used in any project, whether new construction or renovation. The system is installed on top of the aluminum, timber, or PVC-U window profile and behind the lintel and offers the following benefits:
- Acoustic comfort
- No drafts and limited energy loss thanks to the self-regulating valve
- Quick, stable, and airtight installation
- Discreet and slim design, both indoors and outdoors
Invisivent® COMFORT
Invisivent® COMFORT goes one step further than Invisivent® AIR. The integrated self-regulating valve with a non-return function (no energy loss from the inside to the outside) ensures even greater acoustic insulation and thermal and energy comfort. Invisivent® COMFORT must always be combined with an extraction point in the same room, which improves the prevention of energy losses and uncontrolled ventilation.
Invisivent® COMFORT EXTREME
The Invisivent® COMFORT EXTREME system provides the ultimate in natural ventilation comfort. The latest product in the range guarantees outstanding sound insulation of up to 48 (0;-2) dB in the open position. The model is equipped with a standard design flap, which offers an even more attractive finish, a more elegant shape, and greater water resistance. Invisivent® COMFORT EXTREME also performs outstandingly in high-rise buildings.
Endura® Twist – Decentralized ventilation with heat recovery
This window ventilation system contains a regenerative-alternating heat exchanger. Two ventilation units ensure a continuous fresh air supply while extracting stale room air. Endura® Twist stores the heat from the expelled indoor air in the regenerators. Every 30 seconds, the ventilators change direction to release the stored heat into the fresh outside air, while pleasantly preheated air is blown into the room. This prevents condensation from forming. The ventilation intensity is controlled via the intelligent touch display, which also shows the air quality and the active program.
The system is available in both a horizontal version (positioned above the window profile) and a vertical version (placed next to the window profile and can be perfectly combined with screens/roller shutters). With a variable length of min. 750 to max. 6,000 mm, Endura® Twist is very flexible and can be used for both small windows and large glass surfaces. Depending on the required airflow (up to 81 m3/h), the number of ventilator modules can be adjusted from 2×1 to 2×6.
No air ducts are required, and thanks to the monobloc system, Endura® Twist can be installed very easily and quickly. It is suitable for renovations, verandas, and outdoor living areas.
