MVHR Calculation programe to help you size your system

An informative and reliable MVHR calculation programme is freely available for designers to support project planning. The programme provides site-specific technical values and helps in selecting the right ventilation unit size for each project.  

The calculation programme has been implemented by W. Zenner Oy, an engineering company that carries out FINAS-accredited laboratory measurements of our products.

The calculation programme covers all Airfi MVHR models. You will need Microsoft Excel to use it