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Cool Moisture Humidifier, HCM350

Honeywell - Cool Moisture Humidifier, HCM350

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Based on 1 year's data from Feb 24, 2026 How it works

Reddit Icondbc001 1.0
r/homeassistantBedroom Humidifier recommendations in US?
about 2 months ago

Thanks for all the suggestions! I ended up going with a Honeywell HCM350B, hooked up to an Aeotec smart switch (probably overkill, but reliable). https://www.amazon.com/dp/B00FJTVHKO It's hard to compare the last 48 hours with the previous few days as the temperatures are wildly different (like 30 degrees F warmer), but it does make a huge difference in my 20 foot by 20 foot room. In the last week, the humidity range was between ~17% and ~27%. Since the humidifier it's been ~26% - 43%.

Reddit IconAVLThumper 0.4
r/AcousticGuitarWicking humidifier
3 months ago

I’ve been using one for years. They work great. I have a small room sized Honeywell. I think it was around $40 a few years ago. It’s only one gallon, so I have to refill once a day. I only need it during the winter, so it’s nice that it’s small and can be easily stored.

Reddit Iconchisav 0.4
r/homeownersWarm mist humidifier?
about 1 month ago

I also live in WI. Do not buy any ultrasonic humidifier. What you need is a wicking humidifier like the honeywell HCM350. Easy to clean. Don't need distilled water

Reddit Iconcopyrighther 0.4
r/YouShouldKnowYSK: Using Tap Water in Your Humidifier Can Seriously Harm Indoor Air Quality
12 months ago

Mine are disposable. I have both an evaporative humidifier (Vicks Warm Steam) and a cool mist (Honeywell HCM350). I soak the cool mist filters in vinegar, and soak the evaporative motor/filter part in about 4-5" of vinegar. Removes mold and mineral buildup from both.

r/YouShouldKnowYSK: Using Tap Water in Your Humidifier Can Seriously Harm Indoor Air Quality
12 months ago

Those Honeywell filters are NOT cheap! I got tired of paying $25-30 for 6 filters that you're supposed to change every month. Soaking them in vinegar allows me to get up to 3 months from each filter.

r/YouShouldKnowYSK: Using Tap Water in Your Humidifier Can Seriously Harm Indoor Air Quality
12 months ago

I started soaking my filters in vinegar. It dissolves all the buildup, and I get twice as much life out of them.

Reddit Iconi4k20z3 0.4
r/BuyItForLifeBest humidifier? Enough for a regular size bedroom.
about 1 year ago

i got the honeywell hcm350 but don’t know if it will be good enough!

r/BuyItForLifeBest humidifier? Enough for a regular size bedroom.
12 months ago

it’s okay! it works and does help with humidity but i wish it had a digital humidistat to turn it self off. the unit is also fairly large and i wish it was smaller. I also wish the tank was bigger as it’s kind of annoying to flip the filter and refill it everyday. I probably could do it every other day. I will say that the filter stays relatively clean after using the deminirlization tablets and aftermarket filter from amazon. Also being able to throw like most parts in the dishwasher is awesome for cleaning . comparing this to a previous levoit ultrasonic and i like that it’s way more healthy. No mold in tricky spots (yet anyway) and i feel like i can do an easier job of keeping it clean for my son. I do change the wick every 30 days as well .

r/HumidifiersCan humidifiers really affect kids’ respiratory health?
3 months ago

No. they all suck and it is frustrating. An ideal situation is to have a whole home humidifier and just have to keep ontop of one filter and cleaning but of course not everyone can do that (and those have their issue too). I'm also a busy working parent and just decided to try going without a humidifier this year and see how it goes. Try to see how they do. In the past, i've utilized the Honeywell HCM350 and run what parts i can through the dishwasher and clean the rest as best as i can as often as i can (prob every 2-3 weeks realistically). I keep eying the Levoit 6000s but i don't have a spacious place and don't have excess funds at the moment or the capacity to try something and deal with returning it, etc. all this to say, as a parent, you are not alone, it is super frustrating and i wish there was an easy to use humidifer for our little kiddos. I grew up with sinus issues and at this point in my life, i feel like i've tried so many humidifiers and am just tired of it.

Reddit IconJollyollydude 0.4
r/BuyItForLifedo all humidifiers suck?? need recs for one that’ll actually survive the winter
3 months ago

Been happy with our Honeywell evaporative humidifier. I’m not sure the model exactly as it’s older but the HCM350 seems to be at least very similar if not the same

Reddit IconMudComprehensive2101 0.4
r/HumidifiersEvaporative Humidifier-Best Option?
22 days ago

Mine are all in small bedrooms; you’d probably need slightly larger models for a living room. I did use the HCM350 for a few years, but after a while, the threads on the tank lid stopped sealing properly which made it really annoying to refill. The model smaller than that didn’t have this issue as soon, but they stopped making them, which is when I bought the Walgreens version of the same size. These have seemed to last me about 6 years of daily use in winter only. Last year I bought an EV100 whose tank lid seems to be better designed (1/8 turn twist to lock, instead of threaded) but I’m not sure the airflow to/through the flat wick is as effective as the round ones. For a larger space, maybe Vornado’s larger models are worth checking out? The Venta ones look interesting, a different design altogether with no wick. I’d be interested to hear opinions on those!

r/Humidifiershoneywell hcm350 cool moisture vs Vornado EV100?
20 days ago

I just replaced an HCM350 with an EV100 in my bedroom last year (this is my second winter with it) I had the Honeywell for 7-8 years, running it nighty from October through March. In Chicago for half those years and now in PA. The Honeywell worked great! The reason I replaced it was the threads on the cap of the tank stopped aligning correctly, so after filling the tank and doing my best to screw the lid back on (which ended up being a pain after a few years) it always dribbled a little when I inverted it back onto the base. Once it was there, it didn’t leak or anything, and the humidifier still performed well, so I lived with it for a year or two before I became fed up with it. The Vornado doesn’t have that issue, it doesn’t have the same type of screw-on lid. The lid of this tank kind of just twists ~1/8 turn to lock. It does run louder, so if that matters to you, the Honeywell is much quieter. Because of this, I almost never run the Vornado on high. Even the low speed is louder than the HCM’s medium. HCM’s low is almost inaudible. About the filter in the Vornado- it’s flat, and the incoming air hits it right in the center. So, even if you flip it periodically, the same middle band area gets dusty and crusty (minerals from hard water). Regardless, I seem to have been getting about 6 weeks out of the filter, same as the Honeywell. YMMV depending on usage/water hardness. TLDR: Vornado louder. Honeywell had tank lid issues after 5-6 years of use. Both are effective in a bedroom.

Reddit IconSignificant_Run_2622 0.4
r/homeassistantBedroom Humidifier recommendations in US?
about 2 months ago

Smart switch and humidifier. I like my Honeywell HCM-350 a lot. Gets the whole room humid very quickly

Reddit Iconspacedragn13 0.4
r/BuyItForLifeAre there any true "self-cleaning" evaporative humidifiers out there?
3 months ago

Fwiw I hated the Honeywell HCM 350 after 6 months. The plastic tray still ends up pockmarked and eroded with regular use. Went through 2 units and gave up on humidifiers altogether.

Reddit IconTara-BuyMeOnce-CEO 0.4
r/BuyItForLifeBest humidifier recommendations?
2 months ago

Get a tank you can fit your hand into first, because if you can actually reach the bottom you can give it a real scrub and not just pretend. Most humidifiers eventually give out because scale builds up in hidden corners and the motor gets overworked... it all sneaks up on you. If you want something a bit more reliabel, a chunky ABS tank usually copes better than the thin clear plastic that can crack with barely any stress. Evaporative wick units usually stay cleaner than ultrasonics since ultrasonics can leave that white mineral dust everywhere and it looks awful. Simple dials usually survive longer. Touch panels can be fussy and once they go there's not much you can do about it. If the fan assembly comes apart it's easier to keep the inside from turning into a little mould patch though some people forget to do this and then wonder why it smells weird and why it's not moving air properly Smart features are fine as long as the electronics sit somewhere dry enough that steam drift won't bother them. If you want straightforward models that perform decently, the Vornado EV100 or EV200 and the older Honeywell HCM-350 are common choices. Skip the silent ultrasonic toys. They run quietly right up until they stop.

r/BuyItForLifeAre there any true "self-cleaning" evaporative humidifiers out there?
3 months ago

Biology always wins, no matter what the box claims. UV lights inside a humidifier tank barely hit anything once the water gets cloudy or a biofilm forms. Chlorine cartridges run out fast, microbes do not. The only reliable approach is picking a design that is hard to contaminate in the first place. A sealed evaporative wick chamber with no internal splash zones helps more than any gadget. A tank and base you can toss in a dishwasher lets you cook off the slime instead of scrubbing forever. A decent wick material slows things down, but it is still not magic. A simple water path with no hidden channels keeps mold from setting up shop. The Vornado Evap40 and the Honeywell HCM 350 fit that pattern, mostly because they rely on plain evaporation instead of pretending to be sterilizers. Any self cleaning UV badge is marketing. Those LEDs barely light the water, much less sanitize it. Simple geometry and heat tolerant parts outlive every gimmick humidifier.

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