Passive House is the increasingly popular voluntary energy standard that’s helping to create ultra-energy-efficient buildings around the world. Typically speaking, buildings that are able to cool or heat themselves using next to no energy are the ones given Passive House accreditation, as they have a particularly small carbon footprint.

Buildings that can be described in this way are able to achieve a comfortable internal climate, combined with good air quality without any requirement for additional air circulation. The supreme thermal performance of Rationel double and triple glazed windows means that they are able to meet the requirements that Passive House calls for.

Exceptional Design

The Rationel brand is one steeped in engineering excellence and we are the top supplier of aluminium windows and composite doors for Nearly Zero Energy Buildings (NZEB) across Scandinavia. This is due to the innovative design of our products that have a number of qualities: