1st observation: I just saw this humidifier increased by more than 10 days (33.40 paid in early January)! 2nd remark This diffuser is very quiet and its pilot is independent, it can be switched off independently of the system. 3rd remark It still has a small rip in the wording, that the broadcaster has a reservoir of essential oils, but are never in contact with steam, so they can not be sprayed. The manufacturer states that this serves only to release some aromatic molecules in the room, not oils and their active compounds, so it does absolutely worthless. The workaround for the problem is to remove the essential oil directly on the vibrating plate, and the oils are sprayed into the atmosphere, and so far no fouling problem. Disadvantage, dissemination of oils is not distributed throughout the night but is concentrated the early hours. Conclusion: For the moment this device is entirely satisfactory for humidification and dissemination of essential oils. These could be arranged in the water tank but it would surely result in clogging of this one.
