Air-O-Swiss AOS 7146 Travel Ultrasonic Humidifier - Cool Mist

quiet and compact
PROs: operates very quietly and very compact - great for travel and personal use by bedside at home. Bottle neck adapter has two (2) size fittings for use with standard plastic bottle. Adapter is very tight inside bottle's neck so water does not leak out. When turned upside down, metal ball stopper is water tight. Fold out 'feet' to mitigate tipping though it may not be sufficient to prevent tipping with larger bottles eg: one liter bottles. Has variable humidity adjustment which works reasonably well too.

CONs: bottle neck adapter fits into inside of bottle mouth - it is not a 'screw on' adapter. A positive about this is that it'll work with standard sized bottles (supports two sizes) however removal and insertion of adapter into bottle neck is VERY tight. Some plastic bottles are very thin walled. Press fitting the adapter can be problematic as bottle's wall may collapse from applied pressure during insertion. Therefore thicker walled plastic is recommended esp. if/when...

Excellent Portable Humidifer
This unit is the original travel/portable humidifier. I shopped around and looked at the several imitators, but decided to go with the Air-O-Swiss name/reputation that I know and love.

This unit is tiny, and comes with a power adapter with both US and European plugs and a soft cloth carry bag.

I use it at McMurdo Station, Antarctica where the average humidity is in the single digits. It puts out less water than my full-size Air-O-Swiss unit at home, but a remarkable amount for a unit this size.

The blue light that others have complained about is fairly bright - as most blue LEDs are - but it's no brighter than most night-lights, and hasn't bothered my sleep. The blue light switches to a red light when the water runs out... kind of a nice heads-up feature if you don't have the output set high enough to see the "steam" coming from the spout.

Overall, I wouldn't hesitate to make this purchase again, and I'd replace this unit with the same if...

Excellent for its size
This review is for the Air-O-Swiss Portable Travel Humdifier (7146).

I bought this unit to help when I travel as I often have troubles with overly dry air. The unit comes with a nice felt carry bag, the nebulizer, the power supply, cleaning brush, and bottle adapter, all of which easily fit in the bag.

I have tried this unit out a few times, and it works well, but, you have to remember that it is a very small unit, and will not turn a large room into a steamy sauna. It is however enough to make a regular sized (300-400 sq foot) hotel room or office comfortable and "take the edge off." It will do about 500 mls in roughly 4-5 hours of time on full output.

It is very quiet, with more noise being made by the occasionaly "burp" of air into the bottle (kind of like a mini water dispenser) than anything else. The mist output is very fine, and evaporates rapidly into the air without leaving a soggy mess beneath it, (though I still wouldn't place it on any...

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