This high -quality heat exchanger offers an efficient solution to improve your indoor climate and to reduce energy consumption. It is ideally suited to both for Retrofitting existing ventilation systems as well as for the Self -construction of a new system. Versatile possible uses: Perfect for retrofitting or building a new ventilation system. Optionally available with energy -saving fans (please inquire). The housing is made of isolated stainless steel and has a counter-current heat exchanger principle, which ensures maximum efficiency. We also offer complete solutions if you need a complete system. As a German mechanical engineering company (member of the building-climate association), we manufacture ventilation devices in different variants and offer tailor-made solutions according to y.