Update on 22Mar2012: This thing is great. The silver (yes, they impregnate the plastic with silver) added to the water chamber means that there is virtually no scum build-up inside. I did clean it once in the time I have had it. The little metal diaphragm of the ultrasonic element is brass not silver, so I do wipe that off every now and then, but this thing is fantastic. I always run filtered water in it. If you don''t, you are either leaving the unfiltered residue in the tank, or blowing it out into your room! Give your sinuses, musical instruments and wood furniture a nice gift.I bought this humidifier because it seemed perfect:
1, Large capacity 2 gallons or so lasts about 24 hours and isn''t too heavy to re-fill
2, Cool mist OR warm mist capability I prefer warm mist, but the heating elements usually take too much cleaning
3, Virtually silent operation no loud fans, just the occasional bubble from the reservoir
4, Nice design
5, Great reviews durability and performance were both praised
6, Germ prevention not sure this is strictly necessary with a warm mist humidifier (boiling water, etc), but apparently a nice to have for cold mist humidifiers.
Believing this justified the cost, which is 2.5 times more than any other humidifier I''ve ever bought, I bought one. It worked pretty well for just less than 2 weeks. Then there was a loud popping noise and now it doesn''t work anymore.
I will bother to exchange it for a new one, but I won''t be buying any others from this maker. At the price, I would expect much greater durability (even the forty dollar humidifiers last a couple of years or so) and there should be an electronic humidistat so that you can regulate the humidity. This model only has a dial that seems to govern output. The model with a humidistat is twice the price (daylight robbery, instead of this one, which is merely standard burglary).
I''m upset with this product, but I''m even more upset with humidifier manufacturers in general. I know water and electronics don''t mix, but what I''m discovering is that the only genuinely bulletproof humidifiers on the market are the buckets of water with fans ("evaporative"). Really?? That''s state of the art for you guys? Can you at least hook up with Dyson and make the fans quieter?
--UPDATE--
I''ve now got a replacement and I''ve noticed a couple of differences: Firstly, the dial on the new machine does much more to regulate the amount of visible mist than the dial on my original machine. Second, the tank now lasts for at least three days instead of one or less. I already knew the original machine was faulty (it broke within 2 weeks), but based on this new information it looks like it was running at maximum, regardless of what the dial was set to. This leaves me with two important takeaways:
1, If you just bought the machine and want to know whether it''s working properly, you should see a substantial change when you turn the dial, from almost no mist to lots.
2, Can the machine handle being left on maximum output continuously? I don''t know, and after last time, I dare not risk it.
--UPDATE II: The sequel--
Well, the second unit that I received lasted the season and is now in storage, clean and dry. Cleaning is simpler than some of the humidifiers I''ve had in the past. There are no exposed tea-kettle elements, so it''s just a case of washing in a weak vinegar solution. If it doesn''t successfully start up again next season, I''ll update this again. I will re-iterate that this humidifier is expensive. I expected it to work first time and it didn''t. However, if it had I would have been as happy with this device as everyone else seems to be, so feel free to take my star rating with a grain of salt.
By the way, to partially address the comment I''ve had so far, this review only represents an n of 2 (not 1, smartypants). I think it''s useful to tot up the star scores from all the reviews to get a reasonable proxy for the failure rate. For instance, if you do this for Samsung LCD televisions you get a 10% failure rate for a sample size that''s approaching 1000. That compares pretty unfavorably with the other major marques like Sony and Sharp... but is borne out by what I''ve heard from sales people at electronic retail stores (ie, quasi-independent experts). Anyway, for this humidifier it''s unclear because of the small sample size. At the time of writing, the failure rate looked like it was hovering around 20%, which doesn''t sound great until you compare that to the failure rates of other humidifiers!
Bottom line: if I need another humidifier, this is my benchmark and I''d definitely consider buying it again ... from a store with a great return policy.
--UPDATE III: Comparison with SPT SU-4010--
I recently purchased the SPT SU-4010 from Amazon, which is another highly rated cold/warm mist humidifier. I like it for many of the same reasons that I now love the Germ Guardian. The chief difference is the SPT model is quieter (virtually silent) but puts out less mist over the same time period and has a smaller tank. If your [bedroom] is under 500 square feet and you need a silent humidifier, I''d recommend the SPT SU-4010. The ion exchange filter in that model even minimizes the "glugging" that is often the loudest noise from these type of humidifiers. If you have a larger room, or are aiming to maximize the volume of water you can get into the air over a given time, I still recommend the Germ Guardian. Note that I cannot yet speak to the reliability of the SPT SU-4010, but Consumer Reports rated it very highly. Please refer to my review of that model on this website if you''d like to progress updates for that model.
--UPDATE IV: Just bought another--
Saw a refurbished version of this Germ Guardian on an Amazon-affiliated website for half the price of a big warehouse store and bought it. Everything seems fine, although I''ve noticed a slightly disturbing difference in output from this one, which is now the third one of these I''ve owned. This one has to be cranked much higher to achieve the same mist in identical conditions. That could be because it''s refurbished or it could be because there is a great deal of variability... Either way, something to bear in mind. I''m putting both away for the summer now so there won''t be any more updates until next winter. I did a quick clean with a dilute solution of standard household vinegar and that should leave these ready to go then.
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This is our second humidifier we''ve purchased from this manufacturer. We originally bought the one with the alarm clock, which is a great product and now we decided to buy this one. It is much more powerful & keeps our house very comfortable. (the original one we bought is in our bedroom). It''s definitely a benefit that you don''t have to constantly buy new filters.Read Best Reviews of Pure Guardian H4500 144 Hour Ultrasonic Humidifier Here
As reported in other reviews, this humidifier will leave a while film if the water used is not filtered or distilled. This film is not as benign as described in some other reviews (explanation below). If I had easy and/or inexpensive access to filtered water I would give this product 5 stars it works great, virtully noiseless as advertized, and virtually maintenance free with there being no filters to replace.I''ve got one at home and one at the office. The tap water I have access to at work is treated (clorine), but not softened, and it''s likley rather hard considering all of the minerals in the water here. After a few days running in the office the white film appeared on nearly every dark surface in the room (especially computer keyboard, printer, phone). Then my printer in my office started malfunctioning, then our copier. The copier repairman discovered the white film inside the copier, fouling up sensors and causing malfunction. He told us we''d have to stop using the humidifier or it would continue to cause problems. I now know why I had to just spend $400 on a new office printer as well. This dust that is emitted from the humidifier can float through the tiniest of cracks and holes and can deposit on nooks and crannies everywhere plenty of places you can''t reach with a dust rag, much less a Q-tip. Pressurized air dusting spray does not seem to remove the dust effectively either.
I''ve got another at my home, 35 miles away, where our tap water is well water, which is untreated hard water. Here I''ve only noticed a small bit of the white film, on only a few of the darkest, shiniest surfaces. What appears on this humidifier that does not appear in the humidifier in the office, however, is a pinkish amber colored slime mold / mildew on the bottom side of the reservior (visible only when you refill the reservoir). This is probably becasue this water is not treated with clorine, and this part of the humidifier is creating a perfect breeding ground for bacterias, mold, mildew, etc. I''m not sure exactly what this slimy substance is, or if it''s presence in the humidifier raises any health concerns. So I''m going to deduce that my water at home has less minerals in it that can turn into this white dust. I''m not sure if clorine in city water could also cause this white dust as well.
The bottom line is, if your water is perfect, this humidifier is close to perfect. If your water is not perfect, you may have some serious problems with this unit, and I would not reccomend it. I would strongly warn anybody against using this in a room with electronic devices if they are not totally sure their water is filtered properly.
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So we got this the winter/ fall of 2010 at our local wholesale club. We used it all winter. While it provided great relief from the winter woes, after a month or so, we realized the issues with this little guy. It''s really more difficult to clean than it should be. More than any humidifier should be in fact. Filling it is a whole other headache.The blue part is the water container. It''s awkward to fill and then carry. Loading it on the base, is in my opinion, backwards. You carry it one way, but must rotate the entire filled jug, which is quite heavy, 180 degrees in order to get it on the base properly. Note: I''m a righty, maybe lefties have an easier time with it.
Now if that wasn''t annoying enough, the cleaning is an almost pointless venture. You take off the blue container, which is probably empty by now, but might not be. So, you unscrew the ''cap'' to the water container and begin to pour water out. You get to the very last drops and realize and good 1/4 cup will not exit the container. I''ve stood there shaking the bejesus out of this thing and still can''t get it out! The issue with this: the device will mold and from what I saw, allow for growth of the orange bacteria, staph I believe. While I''m not worried, usually an issue where we live (it''s really humid), so I just clean it really well with soap and water. While that works for the base, it doesn''t work as well for the water container. You can load up some soap and shake it around, but even after rinsing I''ve found it''s almost impossible, without outside assistance, to remove all the water. (which just allows for more growth of nasty yuckiness, plus a headache when putting away to store for the warmer seasons).
So, I have found one solution to solve both problems, cleaning the blue container and getting rid of all water to allow it to fully dry. (FYI the best way to ensure all bacteria has stopped growing, ensure completely dry before reuse) I dump in about 1 cup rubbing alcohol, replace the cap and shake it, ''bejesus'' style, out of it. After about 15 seconds, I unscrew the cap and shake as hard as I can again to really get as much out as possible then leave it to dry out with the hole upwards. Not down, as would seem obvious with most things, this will not dry out with the hole down. (5 days later and that 1/4 cup still wasn''t gone with hole down). I really recommend just putting it in front of a fan or small heater (very low heat, it''s plastic and WILL MELT) blowing into the hole. That seems to work faster.
Lastly, but really not a function issue, just annoying, the BLUE LIGHT on the front is an always on thing. You can turn on a ''nightlite'' but really with as bright as this things ''on'' light is, you won''t need it. Probably annoying for light sleepers. I am, but use an eye mask at night...
Would I buy this one again? Probably not. Not sure if I''d buy from this company again. I''ll read Amazon reviews before I buy any other humidifiers.
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