Fanless and filterless, it would make no sound and needs no maintenance, but you might want to make sure to clean off the ionized dust that builds up in close proximity to it about the wall. This is often all in a single use equipment. You can certainly use this https://allhealthmarket.com/product/home-care-2/hydrogen-generator/hydrogen-water-generator-300ml-hydrogen-inhalation-machine-h2-inhaler-therapy-hydrogen-gas-generator-water-purifier-ionizer/