Ventappen is a computational tool offered by VoltAir System AB, the producer of the most energy-efficient air treatment system. It is designed to assist with ventilation engineering calculations, providing the most commonly used formulas for calculating ventilation systems. With Ventappen, you can calculate temperature efficiency, heating and cooling, flow and speed, fan laws, and k-factor. The app is available for free on Android, making it convenient for engineers to perform calculations on-the-go.

The user interface is simple and easy to navigate, allowing engineers to quickly input values and obtain results. Ventappen saves a lot of time by eliminating the need to perform calculations manually or using complex software. It is an essential tool for any engineer involved in the design and installation of ventilation systems.