Air Innovations Humidifier Large Capacity 1.37 Gal 5.2L Whisper-Quiet High Performance Cool Mist Ultrasonic Rooms up to 400 SqFt Baby Bedroom BPA Free Up to 70hs Digital Display Aroma Tray (Blue)

I needed a steamer for my son's bedroom when he had bronchitis. I've previously used Crane, but I needed a new one. It works great and puts out a lot of steam for a small unit. We use it on the lowest setting in my son's room, which is about 130 sq. ft, with 8 foot ceilings. It puts out a decent amount of steam. I also used it in a larger space on a higher setting with good success.It helps him sleep better at night. It is relatively easy to clean, as far as these types of devices are. There is a 'ceramic' filter inside which needs to be rinsed periodically. I'm not sure exactly what it's supposed to do, probably reduce mineral content. The one feature I like is the ability to dim the display at night. I haven't used any of the other fancy features, so your mileage may vary in that respect.The design is cool and reminds me a bit of a Transformer. It has a very small footprint, so it can fit on a dresser or sturdy shelf.Overall highly recommended.

This is easy to use, large enough that you do not need to fill it every night or so. That being said, it is easy to fill but is rather heavy when full, for me to lift up and place it back on the base. I am short and it is on a stand about chest high for me. It is quiet and I am happy with the unit.

Disclaimer - I have only used this for one night, but seems to work well so far. We were using an Optimus U-32000 "warm mist" type for many years, which I absolutely loved since it had a humidistat and did not have the "white dust" problem of ultrasonic types. The only problem with the warm mist humidifier was that the humid hot air rose up to our old plaster ceiling, condensed on it, and after 10 years caused the plaster to buckle. So we put this MH-505 humidifier 4 feet from the bed, with the vent pointing towards it. Hopefully the cool moist air will stay low and not effect the ceiling. I set the power on "low" and the humidistat on 40% (the lowest it will go) and placed a separate humidity meter next to the bed. The separate humidity meter read 20% before we turned on the humidifier, and by morning had risen to 30% which is exactly what we wanted. It only used 1" of distilled water overnight (on "low").Pros: I love the features and the display, and the ease of setting it. The "dim LED" feature is a great idea - it shuts off the bright LED display so it does not keep you awake. I like the shape, color, and design.The only "cons" I have is that I wish you could set the humidistat down to 30%RH (it currently only goes to 40%), and I wish that it could display the surrounding humidity down to 10% (it currently only displays down to 31%).

I should have done my research before I bought. It is a nice humidifier, but when I saw "ceramic filter" I anticipated a heavy duty filter. The filter itself is plastic that is filled with ceramic beads to do the filtering. It works great, but not as heavy duty as I thought when purchasing it.

Well constructed and performs great. Raised the RH of an 18' X 11' room to a comfortable level in about 40 min on highest setting. What I really liked was the fact that this machine produces a very fine mist; there was no pooling or accumulation of water on the surface where the unit sits. It is super quiet....only an occasional "gurgle". Used the unit at night in a bedroom. Some reviewers found the LED display not too bright for bedroom use, however for me I preferred to use the dimmer switch as there is are a lot of LED's lit up on the display. The display can be minimized / dimmed. Distilled water is suggested for hard water systems, however the instructions mention filtered water can also be used. I am using water from my BRITA filter system. Will see if this is sufficient to prevent any buildup. Water tank is large and seems to be sufficient for extended use without refill, even at high settings.

Right out of the box, set-up was easy. Plug-n-play!The machine is so quiet, I hear nothing. The mist is adjustable and can be redirected. There is always a small light visible, but it is remarkably unobtrusive.Only downside for me is the need to take it downstairs to fill it at the kitchen sink, meaning I have to schlepp it back UP the stairs, full. Anyone with difficulty managing stairs and carrying heavy items at the same time could be challenged.I have been told that room humidifiers such is this one do very little to increase the humidity in a room, and my personal experience does seem to bear that out. However, this humidifier does nudge the percentage a wee bit higher, and that is better than nothing for me. And if I THINK it works, it works.Very happy with this machine!UPDATE: I have been running this humidifier nightly for two months and I remain very happy with it. If I don't turn it on for some reason, my throat hurts in the morning. It works! This is a 5-star item.

Works great. Easy fill. Little noise. I run this in my office at work. My co-workers love it. Runs as needed and shuts down when set humidity is reached. No issues. This is the fifth cool mist humidifier I have purchased from this company. They work better than any other any other brand I have ever purchased. Worth spending a little extra to get the quality.

the humidifier works great, the only problem I have with it is that it does not keep the setting when you turn it off, you have to enter the settings that you had previously set, that's why only 4 stars