Holmes HM500-UC Ultrasonic Cool Mist Humidifier
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- Ultrasonic humidifier from Holmes for small rooms and personal use; quiet operation
- Cool mist propelled by high frequency vibrations; energy efficient
- 1-gallon capacity water tank; humidifies for 24 hours with full tank
- Mist output and direction controls provided; filter-less design
- Limited 3-year warranty
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Directions in manual which is included with product
Top Customer Reviews
But in a small room those bigger humidifiers not only take up a lot of room, they put out much more humidity than the room needs. A too dry room is bad for health, but so is a too damp room. In fact, even a smallish humidifier can be too much if it has only one or two settings for the flow of humidity, as many do. You end up having to guess how much to fill it up so that it runs out of water before stuff starts to grow on the walls.
The Holmes HM500 is small and has a variable humidity setting, so after a little testing you can determine what setting will keep the room at a healthy humidity. You can also limit the flow to what will evaporate before it lands on the floor, so that you shouldn't get a wet spot on the floor nearby if you set it right.
It will put out a pretty impressive stream of fog on the maximum setting, but more than you can probably expect will evaporate before it reaches the ground unless the unit is up high. (It might be great for special effects or a terrarium or vapor therapy, or something, though.)
A small fan pushes the mist out the nozzle, so this model isn't silent but it is quiet - especially it's several feet away. Many will find the noise soothing, some won't like it. The fan keeps running even when the tank is out of water, to dry out the base they say, so FYI - don't forget to turn it off if you're planning to be out for a while.Read more ›
As advertised, it put out a substantial volume of cool mist, like other ultrasonic humidifiers. Unlike others that we have owned, however, it put the mist out at such a low velocity that a substantial amount of the mist sank (instead of rising) and puddled on the floor next to it.
We could (and did) put a towel down; but there's no reason to settle for a poorly designed product when other, similar devices work well.
a hot vapor humidifier made it too hot and way too humid to operate non-stop through the night (although it relieved symptoms)
the Holmes humidifier saved the day (or better night): it emits a visible cooo mist that does not cool down the room and provides powerful application of humidity for a small room (we directed the steam at our daughter's head in the crib).
There are no filters to replace (cutting down on operating costs and potential germs and allergies) and the tank was enough for 12-16 hours of full-steam operation, longer on lower setting. Not once did the room feel clammy or too humid.
the unit is easily cleaned and I add tea tree oil or eucalyptus as needed to relieve my daughter's condition even further.
I am actually looking to get one for myself to put atop the nightstand instead of our regular big one.
Most Recent Customer Reviews
This thing is a piece of trash. After about a month of using at night (about 7 hours/day), it makes a grinding noise in the engine. Read morePublished 12 months ago by Nicholas Pallotta
I wanted a unit for my nightstand during the winter and the size of this is perfect for that, however... Read morePublished on January 16, 2012 by Marcy
I absolutely love this little humidifier! I use it in my cubicle at work- my co-workers come over just to get a whiff of moist air from it. It is noiseless. Read morePublished on February 19, 2011 by Karen
This lasted about three months of using it at night. I just threw it in the trash.Published on October 31, 2010 by Lex