Overall we really like this humidifier. The blue "on" button glows a little brighter than I'd prefer, but the machine works well and is very quiet. If the steam wasn't flowing I wouldn't know it was on, so it's great in terms of noise-level!
                    We run it overnight and it seems to be out of water by the morning, but refilling it is fairly easy. We have found it helps the airs dryness in the winter up her in New England. Overall, we really like it and are happy with the purchase.