Honeywell Cool Moisture Humidifier, Medium Room, 1 Gallon Tank, White – Invisible Moisture Humidifier for Baby, Kids, Adult Bedrooms – Quiet and Easy to Clean with UV Technology for Everyday Comfort

I have the Honeywell HUL570W humidifier also so I can provide a comparison between the two.TypeHoneywell HCM350W - Evaporative, larger footprint for large fanHoneywell HUL570W - Ultrasonic, smaller footprintNoiseHoneywell HCM350W - Barely audible on lowest setting, still very tolerable on the highest setting, sounds like low white noiseHoneywell HUL570W - Barely audible buzz of the nebulizer. Same noise level whether on lowest or max setting on the dial. You hear some water droplets when on high.FiltersHoneywell HCM350W - HAC-504AW Paper Filter - ~$9 on Amazon, change when evaporative abilities are diminished, roughly a few months depending on usageHoneywell HUL570W - Demineralization Filter HDC500 - ~$12 at AceHardware (not available on Amazon at time of this review), change every 20-30 tank refillsCleaningHoneywell HCM350W - Very easy to clean, the base comes off completely and can be thrown in dishwasher, changing filter a breezeHoneywell HUL570W - Easy to clean but not as easy as the HCM350W since there are a lot more parts to deal withEffectivenessHoneywell HCM350W - Slower than the ultrasonic model but won't over-humidify your room even if you forget to turn it off. For this reason alone, I can only use this in my office which has many electronics and computers.Honeywell HUL570W - Works much faster than the evaporative model but if you turn it on too high/leave it on too long, you will over-humidify the room and have condensation everywherePower ConsumptionHoneywell HCM350W - Low: 18W, Med: 28W, High:45WHoneywell HUL570W - Analog dial, 20W up to 50% on dial, slowly inches up to 33W on max settingConclusionHoneywell HCM350W - Works a tad slower than ultrasonic, but offers peace of mind that your house will not be soaked if you forget to turn off.Honeywell HUL570W - Works great, I will be using this in my bedroom which has no electronics

This humidifier is working very well for us. It is well-designed and easy to refill as well as being very quiet. We used to have a larger Honeywell humidifier with about 3 gallon capacity, but this died last year when the humidity sensor failed. This new version does not have a humidity sensor, which is great because it's one less thing to fail. I would only consider a wick-type evaporative humidifier because the other types will produce the fine white dust that covers everything in the house. We have very hard water, so I'm resigned to replacing the wick a couple of times during the season, probably once a month. I use a liquid bacteriostatic treatment additive which prevents bacteria buildup and prolongs the life of the wick, and have never had a problem with the wick smelling. I do have to rotate the wick once a day after a week or two of use to keep the wick moist as the minerals in our water decrease the absorption effect of the wick. I will definitely buy another of the same model if we need it to keep the desired level of humidity in the house.

This unit works differently than other humidifiers. It doesn't have a heating element or spew moisture into the air. That method works fairly quickly, but it also requires a constant maintenance procedure. This unit works on a method I call "accelerated natural evaporation". It has a large, replaceable, wick in the base that absorbs water. At the top is a fan that draws air up through the base, across the wick, and out the top. A slow humidifying procedure. Depending on your choice of speeds, it's fairly quiet and requires very little maintenance. The water reservoir is easily removable for filling. I've had the other type humidifier and the maintenance procedures was the deciding factor for me. 😅

The media could not be loaded. I bought this on Amazon in February 2019 and it is now February 2024 and I felt the need to write a review (I almost never write reviews, but I have a useful tip that I wanted to share).Like a lot of people, I needed a humidifier to help with sinus issues b/c the winters are so dry. I've had other humidifiers with the cool mist, and the white dust was a major issue (the amount of water I go through with my humidifiers made purchasing distilled water unrealistic). This humidifier completely solved the white dust problem while using my tap water. The fan sound went on low is quiet enough that when I have it in my living room, it doesn't bother me, and if you are a white-noise-while-you-sleep kind of person you would probably be perfectly happy with it on a higher setting as well. The bubbling of the water emptying the tank into the tray can be distracting when I have people over and they hear it. I rarely notice it, but if you plan to have it in a bedroom and a light sleeper, that's something to keep in mind (I also have Honeywell's other evaporative humidifer that does not have a separate tank and so does not have that issue and that is in my bedroom - I find that one to be less convenient to fill, though).The plain white filters work fine - how long each will last depends on how hard your water is. I will note, I forgot to purchase refills once and was able to use one of the washable/reusable ones for another humidifier I have but that humidifier and those wicks don't seem to still be available on Amazon but it seems any humidifier that uses those cylindrical filters uses the same size filter.This year (the 5 year mark) when I first got it out at the beginning of the season the gasket was leaking a little bit when I refilled the tank since it's rubber and as it ages it has become stiff and brittle. Multiple reviewers have mentioned this and have expressed frustration that you can't seem to replace that one tiny rubber bit. I was getting ready to consider purchasing another one but as the only thing that seem to be wrong, was that one gasket I felt uncomfortable with throwing out the one I purchased five years ago. I decided to give something random a try to see if it would work first... I am pleased to announce that it absolutely worked better than I imagined!I do hope that Honeywell does offer the option to purchase a replacement water bottle cap (or at least the gasket) in the future, but in the meantime, if you don't want to get rid of the entire unit because it's working fine and you need to replace that one gasket there are other humidifiers out there with caps that sell replacement caps. The other caps are significantly smaller and the gasket is also a bit smaller than the cap and gasket on this Honeywell humidifier, however, the gasket doesn't actually need to be as large as the original one it seems!I purchased a replacement cap that appeared to have the same spring/rubber gasket mechanism to see if I could cannibalize the gasket from the other cap (I purchased this one that is for a slew of models including Emerson, MoistAir, Kenmore, etc: https://www.amazon.com/gp/product/B082K4X4SQ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1). I was able to pop the rubber bit off of the small cap and use that in place of the rotting one on my Honeywell and I no longer have to be extra cautious when flipping the tank over to place back onto the unit!!Hopefully, Honeywell offers replacement caps in the future so people don't need to purchase a whole new unit for one tiny, very replaceable part!