Residential and traffic areas are moving ever closer together. However, we only have a good feeling when we are within ‘silent walls’. That is why the motors of the Silvento have been optimized, the geometry of the impellers supplied with air re-designed and improved based on experimental testing. This has resulted in one of the most silent fans in the world. All Silvento items convince by way of their minimal operating noise which is hardly audible, since the noise level is just 24 dB(A) at 30 m³/h (basic ventilation) and 35 dB(A) at 60 m³/h (regulated ventilation).