Are noises during the dispense normal? What noises are normal?

During the mineralization, filtering, and dispense the Mitte Home will emit a pumping noise. During carbonation, you will hear pulses of CO₂ being released into the bottle, after which the pressure in the bottle will be released. Additionally, there might be some pressure release noise from the cartridge.

There shouldn't ever be a noise louder than 75 dB. Most of the noises are below 70 dB.