0ur opinion: :Compact and unobtrusive, the Honeywell HWM255 quietly humidifies a room with an area of up to 350 square feet, providing comfort in very dry environments. Geared to provide up to 3 gallons of daily output, the tank itself holds about 1-1/2 gallons of water. This helps keep the unit size relatively compact so you can conveniently place the HWM255 virtually anywhere in your room. A built-in humidostat advises how much moisture has been emitted. There's also a built-in timer so the machine only works when you need it, great for maximizing comfort and saving energy. Auto Shut 0ff turns the device off when out of water. Honeywell's EZ-Care system makes filling and emptying really simple. The water tank is dishwasher safe for quick and thorough cleaning.
Features and Benefits: Automatic shut-off at desired humidity or when unit is empty EZ Care System - Easy to fill, carry and clean Dishwasher safe medicine dispenser Replacement Filter - No replacement filter required Dimensions - 16.00 x 13.25 x 10.50 inches Weight - 8.0 pounds Warranty - 5-years limited warranty
Testimonials
Average Buyer Rating:

Buyer's feedback: 
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* So So Humidifier ...
After a year of trying to find a humidifier that works and doesn't break or gets nasty, I will help everyone by giving you my observations. First we tried those $25 cool mist humidifiers that require the $10 filters/wicks that need replacing every week because they are wrapped up with mold and are loud as an F-15 preparing to take off. I have tried probably every one there is and at one count I had five different ones. I don't remember the exact models, but Bemis and Holmes come to mind when I went to search for those always out of stock wicks. I thought I would go to the warm mist humidifiers because of the apparent purifying of the water through the steaming process, and no wicks. I put all my humidifiers near a heat/airvent (3'-4' away) approximately 3 feet off the floor on a small table to help dissipate the steam. My first one of these was the Honeywell HWM450. I really liked this one right out of the box. I put it together as described, filled it up with water, set the humidistat to the desired setting and turned it on. It immediately began spewing out the nice warm steam that the instructions said it would and kept our room (14' X 16') at a nice 45-50% humidity level according to my Oregon Scientific meter. After every tank full, I would take it apart and inspect the mineral pad and clean or replace it as described. This thing worked great, good steam, fairly accurate humidity reading (+/- 5%) and automatic operation, no problems until 29 days later (30 day return policy at store I bought it from) when it woke my wife and I from a nice sleep with a putrid plastic burning smell. I jumped out of bed to see what it was and it was the HWM450. I unplugged the thing and noticed it was sitting in water. I took the tank and control unit off to see what was happening. It appeared as if the heating element came separated from the base and let water seep through to the bottom, almost starting some type of fire or melting process. I packed it up and took it back to the store where they graciously took it back. I went to get another just like it thinking this was just a fluke, but luckily they were out and gave me a refund. I then came to the internet and began searching for others. Glad I did and read other reviews on this model so tossed out trying to get another. I then went to Sears and bought a Kenmore 15124 3-gallon warm mist humidifier. This is the one that needs cloth sleeves that fit over the heating element to absorb the minerals. I set it up according to the directions and let it run all night. On high setting, I could never get the room above 30%. This was futile. I boxed it up and took it back for a refund the next day. I may not have given it a fair chance, but even the cool mist humidifiers would get to 35% within 3 hours. I then found two Honeywell HWM-255's on clearance at the local big box. I snatched those up and took them home, set them up as instructed by the enclosed book and let them rip. One immediately started working and the other just sat there with a half working lcd display. I never got it to work and I took it back. The other one I set up in our bedroom and noticed the humidistat didn't give an accurate reading as tested with my Oregon Scientific hygrometer. I did fiddle with it enough to get it to cycle on and off to the level I wanted using my OS hygrometer as a base line. To get 45-50% humidity in the room, the HWM-255 had to be set on 75%. Thus far, I like the one that works. It seems easy enough to clean, no filters, wicks or mineral pads and the reservoir sits nicely upside down when filling. Just have to wipe off the heating element every filling, but that is cheaper than those filters. I then decided to get another one for a backup since these things seem to self-destruct regularly. Since I have one that apparently works, I was in no hurry to buy one. I read some reviews and had a few models in mind and I would investigate them as I saw them in local stores. I was in a local towel/linen store waiting on my wife one day when I saw a huge amount of steam coming from one corner. This caught my eye since I have been on this humidifier search now for a while. I walked over and saw several models sitting on a pile of boxes with several TV's playing videos about each one. After watching these videos on each model displayed, I proceeded to work the knobs and turn various ones on and off, take them apart and look inside them and just gave them a generally good going over. After digesting all the info I then purchased a Venta Sonic VS100. I couldn't make myself buy the Air O Swiss one, but if I had not bought so many before, I probably would have. I took this one home, set it up according to the directions and turned it on. It didn't take long for it to start working and within two hours, it had the bedroom up to 50% humidity from 30%. Its tank wasn't hard to fill, but it did take a moment to fill up the cartridge where the water fill is so would start letting water down to the heater. When it reached the desired humidity level, I adjusted the two knobs on it to where it would cycle on and off. It emptied the tank in one night and I finally got a good night sleep without waking up with dry throat. This thing just spews out the nice steam/mist profusely. With all this said, here are a few observations. 1) Don't rely on the built in humidistat (humidity indicator). Have a separate one to measure you room's humidity. It is better to have a dial type humidity controller that works than a digital one that doesn't. 2) Cheap prices on these things are not good. You do get what you pay for. It seems like the ones that the price started out >$90 is better. Just buy 1 @ >$100, then 8 @ $30. 3) Keep your receipt and original packaging and buy from a vendor with a good return and customer service policy. Chances are you'll have to return the cheap ones. 4) These reviews are fairly accurate and are good aids for decision making. 4) Cool mist humidifiers are germ factories. 5) If you buy one that requires replacement filters, cartridges, wicks, make sure they are readily available or stock up when you buy the unit. 6) Place a humidifier off the floor preferably not on top a heat vent and if you have a ceiling fan, turn it on. 7) Don't leave these things running without being watched until you know what they will do. 8) Get one size bigger than what you think you need. Daily water output is a better indicator than room size capacity. 9) All these things do is introduce water into the air. Warmer air holds water better than cold air. Old timers used to put a pot of water on their wood stoves to do the same thing. If you have a wood stove, you don't need a humidifier just more pots of water. I'll update this as more info comes available.......
Buyer's feedback: 
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Great until it stopped working
I've had two of these units now, and both of them quit after about 4 months for no reason I can figure out. You should use distilled water, or you'll find yourself taking the thing apart and cleaning the mineral build-up off every couple of weeks or so. While it was working though, it was pretty good. I'd recommend a humidifier with manual controls instead of digital, as that was what first stopped working.
Buyer's feedback: 
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* Does the job, & quite too! ...
We had never owned or used a humidifier, but this winter we decided to give it a try. Glad we did, and so far we feel that this humidifier was a good value as it's doing the trick!
Buyer's feedback: 
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Digital reading didn't work
This humidifier worked well, but the digital reading never gave an accurate measurement of the humidity in the room. It was supposed to shut off at a certain mark, but it kept on going. I returned mine and will hopefully find a decent replacement (and a cool mist instead of a warm mist model).
Buyer's feedback: 
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* Poor Quality ...
Just purchased unit 2 days ago, right out of the box the humidistat started at 30% which was correct but once I set it to high it jumped to a reading of 60% in about 2 minutes does not work properly when set on high level it seems to pickup the humidity from the unit instead of ambient humidity, on low level it works well but not enough output for larger rooms.
If I use it without the humidistat on high it increased the humidity too much and I have to remember to shut it off manually or I get condensation everywhere from too much humidity. Called support and they said to return it.. unit is defective.
As others have said, these units work well.. when they are working but be prepared for poor quality issues if you get one.