Buy Honeywell Germ Free Cool Mist Humidifier, HCM-350


Offer added on Thursday 23rd of October 2014

Honeywell Germ Free Cool Mist Humidifier, HCM-350

Customer Reviews

Product Reviews

Fantastic Humidifier
I have had this humidifier for a few months now and use it in MY bedroom as well as my 15 month old twins' bedroom. I had an Ultrasonic humidifier (filter-less) but discovered the 'white powder' effect after using one (google it).


(1) It's quiet! Yay!
(2) It doesn't change the temperature of the room even though it's a cool mist humidifier
(3) I use one of those gadges to see if it's humid enough in the room and this machine definitely works
(4) The filter doesn't need replacing THAT often (maybe every 6-7 months or so)
(5) The tank can sit in the sink to be filled and doesn't topple over
(6) Super easy to set up and use


(1) It's pretty big and bulky
(2) I hope the UV light to kill germs is working because I don't see it anywhere

I would definitely recommend this cool mist humidifier though!

Best one out there!!!
I live on the East Coast so dry winter air is a MAJOR problem for me. I have my humidifier running 24/7. I have tried many different ones, but this one is by far the best I've found so far. It's extremely quiet even on the highest speed, I can run it for 16 hours on the highest setting without having refill the tank, and the best part for me is NO WHITE DUST!!! I have very hard water but even with that there is never any white dust. If I need another humidifier in the future I would buy another one of these.

Best Humidifier in 30 years
I've been through about a dozen different humidifiers over the years. It gets extremely dry here in the winter so we run these all the time.

Sound: For those of you that appreciate white noise to help you sleep, this probably won't be enough for you. This is the quietest humidifier I've found.

Refills: On the highest setting this will last around 18 hours so I can easily run it for two nights without refills. On a lower setting, running only at night, I'd imagine you could get away with refills only every 4 nights or so. The handle design is the most comfortable and well balanced of any humidifier I've ever owned so trips to and from the sink aren't so awkward. The lid is extremely easy to get off/on and my husband never over tightens this one. The fill tank opening is not only easy to get into but very large so a gushing flow from the tub can fill it up very quickly.

Air Quality: I don't know how it does it, but it does the best job of any humidifier I've ever owned. You will never have water condensation around the base (or anywhere else for that matter). The air never gets too heavy with moisture that it feels muggy (although I've never tried it on high in a room smaller than 10x10). But it makes a very noticeable difference to my comfort and breath-ability during colds. Because the air output is straight up, you don't have to worry about having it too near dressers or bed linens or anything else getting too wet.

The only downfalls are the price (most expensive in a lot of stores) and the size. It is pretty large. But I think the size is worth it as it is used for a more powerful fan and a large water tank leaving refills less frequent.

This well-designed humidifier gets the job done
This unit is comprised of four parts that are elegant in their simplicity and optimization. Part 1, the base "platter", is merely a simple piece of tough plastic (no motor, no switches, nothing electrical, no mounted parts at all) embossed to provide channels that conduct water from one end (where Part 2, the reservoir "jug", sits) to the other end where the water is absorbed up into the cylindrical wick "filter" cylinder (Part 3) where the powerful fan in the upper main unit (Part 4) pulls air through the moist filter perimeter and ejects it upward into the room. In my moderately large house (3600 sq ft) I have 4 of these units running, and the reservoirs (1+ gallons) have to be refilled every 12 hours (8+ gallons per day total) to maintain reasonable humidity in house. These work much better than my furnace-mounted humidifier.

Reservoir refill process is, take a 2 gallon plastic bucket of water to humidifier, lift out reservoir, lift off main unit, put wick filter in bucket to soak, make a trip to sink to refill reservoir jug, put wick filter back in place, put main unit back in place, drop reservoir jug into main unit, move on to next humidifier. In a 4-month heavy heating season, you'll need new throw-away wick filters ($9) at the outset, and half-way through. (The manufacturer-supplied wick filters are the only item that can be improved on. Don't buy Honeywell's replacement. Get Sunbeam SWF-227. They're 5-1/2" instead of 5" tall, but after they're soaked, you can easily squish them down.)

At end of season, clean platter and reservoir in the dishwasher if you like, and wipe down underside of main unit surfaces with a damp cloth. Not absolutely necessary, the surfaces don't accumulate deposits that much. The only other thing you'll need to replace periodically is the special UV lamp that shines down from the main unit into the water channel to kill any stray incoming bacteria/virus.

Get humidified, and stop the itching.

Great humidifier. Highly recommend.
My wife and I spent a lot of time reading reviews of humidifiers looking for the clear best product to go in our room after the birth of our son. Unfortunately, lots of humidifiers have mixed reviews--even this one. Still, it had a lot of praise and relatively few complaints. We have been using it for about a month now and have no complaints.

The reservoir is easy to fill and we have had no leaks. A full tank will last all night and a lot of the morning on high. On medium, a half tank will get you through the night. On low, even less. The noise level ranges from a moderate white noise on high to a barely audible purr on low. The sound is that of a small fan--no high pitched whining or anything like that. I have not had to replace the filter, so I cannot comment on that part of the process. Likewise for the UV sanitizing bulb. The picture gave me the impression of a rather large and bulky unit, but actually its pleasantly small and discreet. I have been able to find an out-of-the-way spot for it in any room. Similarly, the unit is light enough, even filled, to be carried to a new room without much fuss. The last thing I wanted to comment on was that unlike the Vicks humidifier I can remember from my own childhood that constantly exuded a plume of cool mist, this one emits no visible mist. This is because the unit blows air over a saturated filter. Water evaporates into the air as transparent water vapor instead of being sprayed into the air as an aerosol of steam-like droplets. While I was a little disappointed to miss out on the nostalgia of seeing the familiar mist plume, I rather like this more efficient approach. We have easily noticed this winter that the air in the bedroom is much more comfortable to breathe than that in the rest of the house. Our new son is a month old and has yet to have any nose-related issues.

THE ONE CON: This is not really a con with this particular unit, but just a fact that you should know. As mentioned, the unit draws air through a saturated filter Honeywell Humidifier Wick Filter, Single, HAC-504AW to humidify the air. When the water evaporates it leaves behind all of the dissolved minerals. Over the course of a few weeks (in my case about a month with only nighttime use) the filter gathers enough mineral residue to stop drawing water out of the reservoir. The filters and paper and must be replaced they run about $10 each. I didn't really think about this or expect it until the unit's water level stopped going down and I found the filter hard and dry.

Overall, I am very pleased with the performance of this unit, and strongly recommend it.

Works great NO wick problems
I'm very picky about humidifiers. I literally spent multiple hours researching online before getting this one. For me, it has to be an evaporative one. I do not like the thought of germs and chemicals from the water going airborne as atomized particles. Evaporative wick humidifiers just draw water up with a wick then blow a fan over it to move the moisture into the air. It's simple. For me, that's really all I need.

However, the delivery mechanism really makes a difference. Previously, I had a big old cabinet water wheel. It was old, kind of nasty and really took up a lot of space. When I decided to replace it I looked for something smaller but that still had the large capacity I like. My house gets really dry in the winter between the windows that leak letting in the cold and the baseboard heat. So I need a lot of output. This one is working well for me as far as bulk of unit and output. I miss only having to fill once a week with the big water wheel (this is more once every day during peak need) but I know in order to have that luxury, I'd need a bigger unit.

I also like the assembly of this unit. There are four pieces: the base, the housing, the water basin and the wick. Everything fits together and assembly is stupid-proof.

I've only had this unit running with some regularity for 2 months. I haven't had any wick problems yet. I know people seem to complain about that a lot. I mean, if I turn it on at night, come back in the morning and the water is half gone, I know the wick is working. So far that's what's happening. If your wick is dry (when you first get the unit or after a long time with a dry reserve), soak it thoroughly before you use it. Also, the base retains water so if you stop using it for a period of time, dump out the extra water, squeeze out the wick and let all the parts set out separately to dry. Nothing is maintenance free, you have to take care of your things if you want them to last :)

Quiet and Effective
Bought the Honeywell HCM-350 two months ago to help to eliminate the dryness in our bedroom during the winter months. The unit is quiet and attractive. We run it on low, 24 hrs. a day, and you don't even notice any sound coming from it. It has eliminated the dry stuffy nose problems you always have in a house heated with forced air heat. Both my wife and I sleep better and breath easier during the night. I would recommend this unit to anyone wanting to humidify a single large room. It will NOT humidify an entire house, but may do the job for a small apartment. I would definitely recommend this unit to friends. The filter needs to be replaced periodically as minerals from your tap water will accumulate with time. The filter life can be extended by soaking it in vinegar and rinsing it out once it gets "limed up". The filter will still need to be replaced with this cleaning method, but not as often. OnlineShopDealer offers the best price I've found ... beats Walmart by $20.00!!

Honeywell Germ Free Cool Mist Humidifier, HCM-350
Love it!
Just make sure you soak the filter before you put it in the unit and flip it every time you fill the tank.
If for some reason the filter becomes dry, Take it out and soak it till all the webs are soft again. Then put it back and flip each time you fill. You have to do your part, if you want good results.
You will have better results and will be happily enjoying breathing.

Best humidifier I've found
I've tried quite a few humidifiers over the years. I am not quite sure why a company has not created a humidifier that is easy to clean. This humidifier, while not perfect, is the closest I've found. It does have filters that need to be replaced but after going through several different ultrasonic humidifiers that were all tremendously difficult to clean, I've decided I would rather replace filters if the trade off is a clean humidifier. This humidifer is quiet and has been easy to clean. I've already ordered a second one.

Cleaning Hint: I find that using only the amount of water I need for a night and then letting it run on low for several hours in the morning (without water) does a great job of drying and extending the life of the filter while also minimizing the chance of mold growth.

Exactly as advertised
I was looking for a Humidifier that would go all day long and still be very quiet. On the high setting this machine pumps out a ton of cool moist air, and if it is running on low , you can't even tell it is on. I have to keep checking to make sure my wife did not turn it off. I like this humidifier so much I am ordering a second one to replace an older, louder one we still use.


Technical data

  • 99.9% Germ Free Mist - Kills up to 99.9% of bacteria, mold & spores in water with patented germ killing chamber technology
  • QuietCare Technology runs up to 25% quieter. Runs 24 hours on one filling.
  • Break resistant and dishwasher safe water tank.
  • Antimicrobial treated filter - HAC-504AW & automatic moisture balance system
  • For medium size rooms


Product Description

honeywell Germ Free Cool Mist Humidifier

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