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!