Your guests are not the only ones who appreciate relaxed cooking. In order to be able to talk to them while you cook, we have made the hoods with recycling function so quiet that you hardly notice them. Generally, there is a noise from the motor itself and the air flow, depending on the level of pressure. In models with ducting, 50% of the noise is channeled through the duct outside the house. Bosch hoods with the CleanAir unit produce up to 3 dB less noise compared to conventional air recycling systems, while offering the same performance.