U4X Hybrid system

with thermal building mass connection

The U4X Hybrid system is a multifunctional climate ceiling system for different room temperature control and acoustic requirements. A special feature of the system is the thermal integration of the building mass through direct connection to the concrete ceiling. This means that, in addition to conventional water- and air-based cooling, the storage capacity of the building mass is also available.

The thermal building mass connection allows heat to be stored temporarily in the concrete ceiling and released again later. In this way, the building mass can be integrated specifically into the heating and cooling concept.

Thanks to the closed ceiling construction, the U4X Hybrid system also achieves good sound absorption values in the lower frequency range.

The U4X climate ceiling system is suitable for offices, conference rooms, hotels, schools and other commercial spaces. It combines heating and cooling, thermal building mass connection and acoustics in one system.

Thermal comfort according to EN ISO 7730, SIA 382/1
Building material class A2-s1, d0 according to EN 13501-1
Very high heating and cooling capacity
Superior sound absorption values (class A)
Building mass can be used as an additional thermal storage mass
Free cooling can be used depending on location, operating conditions and system concept
Components can be integrated

Cooling capacity > 75 W/m² (8 K)
Heating capacity > 100 W/m² (15 K)
Sound absorption Class A
Carbon Footprint < 50 kg CO₂/m²

Basis for assessment

Cooling capacity

The cooling capacity corresponds to the amount of energy per second removed from the room via heat radiation and convection. It is determined in accredited climate laboratories in accordance with SN EN 14240.

For comparison: the heat emitted by a person in an office via radiation and convection is approx. 70 – 80 W; the heat emitted by a laptop is approx. 20 – 50 W.

Heating capacity

The heating capacity corresponds to the energy per second added to the room via heat radiation and convection. It is determined in accredited climate laboratories in accordance with SN EN 14037.

For comparison: The heat output of a person in an office via radiation and convection is approx. 70 – 80 W, whilst that of a laptop is approx. 20 – 50 W.

Sound absorption

As the largest unobstructed surface in a room, the ceiling is particularly well suited to sound absorption. The sound absorption class is determined in accordance with EN ISO 11654, based on measurements carried out in accordance with EN ISO 354 in accredited laboratories.

It serves as a parameter for acoustic designers to calculate the effect of a product on a room’s reverberation time.

Carbon footprint

The carbon footprint describes the greenhouse gas emissions associated with a product. These emissions are expressed as CO₂ equivalents. The life cycle stages considered are specified in the respective Environmental Product Declaration and its defined system boundaries.

An Environmental Product Declaration (EPD) transparently presents various environmental impacts of a product based on a life cycle assessment. The calculation is carried out in accordance with the standards and methodological requirements specified in the EPD. Where stated, the EPD is verified by an independent third party.