Sustainability

up to 93%

heat recovery
efficiency

32

countries,
where we help save energy

36

years of developing
energy-efficient solutions

EPD

independently verified
by TÜV SÜD

up to 118 t

CO₂ e
saved by the DUPLEX 650 Flexi unit over 25 years of operation compared to window ventilation

up to 80 %

of the unit
is made of recyclable materials

Sustainability is at the core of everything we do.

We create healthy indoor environments, conserve energy, and foster the development of people and communities.

Documentation

Important documents, certifications, and reports.