
Dreo - Smart Humidifier 409S
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Based on 1 year's data from Feb 24, 2026 How it works
I’ve been using a dreo cool mist smart humidifier for a couple years and I really like it. The directions do say it can be used with tap water but it works much better with distilled water. I’ve been using distilled water and I only have to clean it once per week with a quick rinse with vinegar. No scale build up and no mold. It still looks brand new. I got tired of buying distilled water so I did buy a water distiller. It’s super easy to make distilled water and I can store a week’s worth in glass jars and then just fill the humidifier up as needed. Otherwise I would have to buy 10 gallons of distilled water per week. The Dreo humidifier is nice because it measures the humidity in the room and turns off when it is optimal so I don’t have to think about it. It also tells me when to change the cartridge.
Purchased a new Dreo ultrasonic off of Amazon. It has a setting to dial in preferred humidity and will adjust output as needed. It keeps my 2000 sq/ft home around 40% despite lots of heat use and very dry air. I do recommend one.
Shit. Help a brother out. What do you think of this one? https://a.co/d/aJ0oFfT Just started using it. Has made a huge impact but don’t want to end up breathing mold in a few weeks.
Last month I bought both a levoit and a dreo. What really annoys me is that there seems to be no device that does neither a sound nor a bright light at startup which makes it really difficult to use automations when used in the bedroom. Apart from that I can recommend both as both integrations do their job.
With my dreo you can turn off the ambient light too. But if you power it off and on again, it lights up for a second, totally blinding everyone in the bedroom. It's not a problem when both are asleep but it's a problem for me since I control the power status with a door sensor.
My Dreo smart humidifier you can turn off both the light and the noise so not sure what you mean
I have a dreo too. It’s fine, wouldn’t mind if I found something better
I bought a Canopy, without realizing how gamed the marketing is in this sector. It was essentially a paper filter tower dipped in a reservior of water with a computer fan drawing air through the filter. It worked, but the construction was dead simple for being over $200. And required a new filter every few weeks. And of course, it had a noticeable cooling effect. Then, I bought a Levoit with warm mist option. It had a design flaw where it was very easy to water log the boiler, which caused flooding. I then tried a Dreo and so far so good. It also has a heat option.
I had an issue with my Dreo it was table side maybe 1.5 gallons. I cleaned it at every refill. One night my bedroom fire alarm went off and the bedroom was full of smoke/fog. Pretty scary stuff. I’m in desperate need to get a new brand but am petrified. Woke up this morning, and my nose was so blocked and still is tonight.
I got the Dreo
I use the humidifier from DREO. I love it! Comes with an app and fairly easy to clean. The biggest thing I’ve found is was you have to use distilled water (or from my Brita in my case). Also I’m new to the harp, should we be using humidifiers in the winter to keep them safe??
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