Dreo

Smart Humidifier 311S 4L

Dreo Smart Humidifier 311S 4L
Amazon$42
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Overall

#51 in

Humidifiers

according to Reddit Icon Reddit

Sentiment score67% positive
4
1
1
Last updated: Jun 27, 2026

Reddit Reviews

Reddit IconBubbly_Armadillo_985
5 months ago

[Levoit ](https://pin.it/2MfulIFWT)or [Dreo](https://pin.it/2ChoGOPVn) are good. I've used both, no complaints

Reddit IconMeghanshadow
5 months ago

Spending more IS frugal when it means a more reliable or effective or cleaner machine and better health or comfort. Just like using distilled water instead of tap in one is frugal despite the increased expense, depending on your local water. Money is not the only aspect of frugality. It’s right there in the sidebar. “It includes time, money, convenience, and many other factors.” If you spend more on a known good-quality humidifier, and decide it isn’t worth it, you can always resell it next season. Or return it within the window. Lowest cost approach? A simple small ultrasonic humidifier that you carry room to room with you and keep close, and a $2 plastic watering can by your kitchen sink to refill it. My mom has a $40 Dreo 4 liter that she shifts from bedroom to living room to craft room as needed. Keeps it half fullfor portability during the day. It’s lasted two winters so far. Don’t use tap if your water it hard though.

Reddit Iconswipernoswipeme
10 months ago

I have a couple DREO that I like a lot. One is a big 2.9 Gal and another that’s 1 Gal. They’re WiFi enabled so I get notifications when they run dry. They also have humidistats so I can set my desired humidity level and not worry about it getting too high and causing mold etc..

Reddit Iconmothernatureisfickle
7 months ago

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.

4 months ago

I went through three WiFi enabled smart humidifiers (Govee, Dreo and Levoit) and I hated all of them. I assumed that because none of them had wicks and they were easy to clean and I was using only distilled water I would have no issues. I had terrible issues. I finally went back to my Honeywell HCM350B germ free cool mist humidifier I bought in 2019. I can toss the parts in the dishwasher to sanitize them, the wicks (use Honeywell brand wicks for no smell) last a while because I use distilled water and it has three modes - low, medium and high. If you want WiFi this is not for you. If you want lights and an app this is not for you. If you want to know the humidity in your room, this is definitely not for you. If you want an easy to clean and easy to fill humidifier for a small space that will last the rest of your life, buy this humidifier.

Reddit Iconnewnewtab
about 2 months ago

We replaced our Midea (I broke the tank, they messed up my replacement tank) with a wifi/smart Dreo. It's a bit smaller but I actually like that more. Customer service was prompt when I had a question. Cleaning is easy, but there are a few parts that have to be taken apart to do it. It doesn't bother me. I really like the Dreo. We only use it on cold, and do not add any oils. PSA: no winter nosebleeds (Upstate NY) the past 2 winters of running in bedroom at night.

Reddit IconNo_Respect_1650
7 months ago

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.

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