Yes, the Philips HU2510/10 humidifier is very quiet. In gentle sleep mode, it achieves a sound level of just 22.5 dB (A), which is as quiet as a whisper. This makes it ideal for use in bedrooms or other quiet environments. The appropriate filter is available at https://www.galaxus.ch/de/s2/product/philips-filter-fy119030-1-x-zubehoer-luftbehandlung-24717487.