The challenge

Which HRV morphology is the best for pushing at the limits of the physics?

As a former scientist teaching the topic of boundary layer theory at the university the inventor knew there existed such limit and decided to set a goal of finding the theoretically most efficient single room ventilation unit. The search became a 30.000 hour long puzzle, testing hundred of concepts with CFD and prototyping. The struggle was about overcoming the pressure in both filter and heat exchanger in a compact design without annoying noise developed. (Picture shows an early version) Halfway, the FILTERFAN was invented and changed the game.

The IP

The Gyropure filterfan technology is described in Pat. US12050020B2 and recently (June 2026) granted in most significant markets: USA, INDIA, EPO, JAPAN, AUSTRALIA, RUSSIA, SOUTH AFRICA, BRAZIL, CANADA, NORWAY. CHINA AND SOUTH KOREA pending but promising.