I believe this item has received unfairly low ratings from other purchasers.Perhaps these reviews are from purchasers who have never owned a humidifier before, or who didn't bother to read the directions.I have owned three different humidifiers over the years, and this one has been overall the best.
I would agree the tank shape could stand some redesign. Like most humidifiers, you turn the tank upside down to refill, thus the top of the tank is best designed to conform to the shape of a tub or sink, so that it stays upright on its own while filling.This one does not do that, but it is still possible to prop it against the end of the tub to refill.
As for the other comments that have been made, of course it makes a gurgling noise.Water is dripping down into the base in order to be converted to steam. I have had the unfortunate experience of owning a humidifier that sounded like an 18-wheeler driving through my house--and believe me, this one is QUIET.
The only knocking noises I've heard were when the tank emptied while I was asleep and I didn't shut it off, AND I hadn't cleaned it in a very long time.
And of course the heating element is going to be hot right after you turn it off, and yes it could char a piece of wood if it came in contact with the heating element.The instructions CLEARLY STATE you must allow the heating element to cool before cleaning or refilling.I cannot imagine why someone would set something wet down on a wood table, or how the heating element came into contact with wood of one reviewer, as the heating element has a surrounding plastic framework that makes it difficult if not impossible to place anything directly against the heating element. Perhaps the user modified this plastic housing in some way.
Also, the tank cap has a mechanism that, together with the humidifier base, controls the amount of water that flows out of the tank.The only way this could malfunction and send water everywhere is if the cap was not screwed on properly (and just like a bottle of soda, if you don't screw the cap on properly, the bottle will leak), or if it is not placed on the base securely.
I have not found the recommended cleaning to be an issue.But then, I use the recommendations as a guideline, not a requirement.How much you cleaning you have to do depends on the condition of your water and your performance expectations.
The recommended "daily" cleaning is basically to remove the base reservoir and dump out any water and accumulated sediment.I actually only do this about once a week, and I have very hard water (lots of clay sediment and calcium.I cannot drink tap water, its that bad.)The recommended "weekly" cleaning is to fill the base reservoir with vinegar and soak for 20 mins, and wipe down the heating element and surrounding housing to remove any calcium deposits.I actually only do this about every 3 months.Sometimes I actually have to chisel off the calcium from the heating element!And with all this obviously poor maintenance, I have noticed no diminished performance!
I'm not sure what the 'reboot' requirement is, stated by one reviewer.The instructions clearly state that you should turn off the humidifier when you remove the tank for refilling, or when you are cleaning.This makes sense.Leaving it on without the heating element resting in a reservoir of water is like putting an empty pan on a hot stove burner.It will damage it.But turning it off for the few moments required for filling or cleaning is sufficient.No further effort is required.And I really don't understand how one is personally offended by an inanimate object.
As for the size of tank, and how long it lasts, that all depends on the settings you use, and the size of your room.The 36-hour timeframe advertised by the manufacturer is at the unit's lowest setting, as most manufacturers do.I keep mine set on low speed, with the humidity percentage at about 60%.This lasts 24 hrs.I definitely notice a humid feeling when walking into my bedroom where I keep the humidifer.My bedroom measures about 12' x 18', but I keep my bedroom door open always so the humidity isn't just staying in my bedroom alone.The packaging states accurately that this humidifier is intended to serve a medium-sized room, not a whole house or very large rooms.
I really love the fact that this model does not require filters. I've had humidifiers that require filters, and of course you can never find the filter when you need one, and they are often very expensive.I've also had a humidifier that advertised no filter required, then upon reading the fine print inside the box, learned that while a humidifier was not REQUIRED, it really needed one to function properly.
I replaced my last humidifier with this one because the lat model I owned had no controls other than on/off, and pumped out so much mist it soaked everything around it, and was a cold mist model that did not keep the calcium deposits inside the reservoir--everything that got soaked by the mist ended up with calcium residue on it that was impossible to remove.
All in all, a very good model.The only thing I would like better is a domed-top model that could rest easily in the tub for refilling.
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Holmes HM5305-UC Warm Mist HumidifierProduct Description: Perfect for medium sized rooms the Holmes Warm Mist Humidifier runs up to 36 hours per filling. No filters to replace and microban antimicrobial product protection insure carefree use.
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I ordered these to go in my Sunbeam Model 701 Ultrasonic Humidifier and found out that they no longer make the 6589 Demineralization Cartridge. Instead, the Kaz DC-51 Demineralization Cartridge is being substituted, but it's about 1/2" thicker than the original 6589. This meant that it would not fit properly in my Sunbeam 701, preventing the water tank from seating properly. I suspect that some other Sunbeam ultrasonic humidifiers will have the same problem, because they are constructed similarly.
