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18 Of The Best Humidifiers And Diffusers You Can Buy Online

Aka, how to look and feel better despite dry winter air.

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You probably already know that using a humidifier can help relieve parched winter skin. But there are other advantages to adding moisture to your home's air! Low humidity can lead to travesties like creaky wood furniture, brittle book pages, warped wood floors, ruined musical instruments, and even brittle wine corks.

FYI, most humidifiers fall into two major categories. *Cool mist* models keep your room's temperature the same, while *warm mist* options boil the water before emitting mist, so they increase a room's temperature.

The American Academy of Pediatrics recommends a cool mist humidifier for kids with stuffy noses, as hot-water models can pose a safety risk. And tbh, it seems like most people prefer cool mist!


Manufacturers suggest using distilled water because it's free of minerals that can cause "dust" that can settle around your humidifier when you use unfiltered tap or well water. That depends on your water supply and if such a dust matters to you. Some folks get around that rule with a humidifier filter or water from a filter pitcher (like a Brita).

Also be sure to follow the manufacturer's directions for cleaning, as methods vary but will keep your gadget running safely and effectively!

1. An ultrasonic cool-mist number with a 1.5 L reservoir big enough for a spacious bedroom or living room.

Runs for up to 16 hours of continuous use, has high and low speed mist settings, nightlight, and auto-shutoff when water is low or the tank is removed. Comes with an AC power adapter, disk cleaning brush, user manual, and two-year warranty.

Promising review: "This is a great product. Cool mist keeps me from dehydrating at night. The cool blue light is awesome. I give this a 5 star rating. I noticed on some websites that this is the very best in humidifiers and I totally agree. I bought one for my son's fiancé and she is loving it, as well. Easy to refill. Easy to keep clean. Cool mist is a delight." —Charmed1

Get it from Amazon for $39.99 or Target for $39.99.

2. A warm-mist model that'll provide hydrating relief you can see — and without a filter!

Has high and low settings, auto-shutoff when water level is low, and medicine cup for added relief when used with inhalants. Reset light illuminates when refilling is required. Runs for up to 24 hours with a 1 gal. tank.

Promising review: "This is my second humidifier from Honeywell. The air tends to be drier during the heating season. I keep it on the low setting in my kid's bedroom (8'x10') and it does a good job keeping the room air moist but not too humid. The high setting is for larger rooms. Cleaning is fairly quick and I don't have problems with the humidifier developing mold like I did with some of the cold mist humidifiers." —NormanChiza

Get it from The Home Depot for $27.59 or Target for $33.99.


3. A cool-mist looker if you consider animal print and clear nasal passages equally preferable.

Has an anti-microbial tank and base to help prevent bacterial growth, permanent ceramic filter, digital LED display, five mist settings, and a 24-hour timer. Runs for up to 80 hours in rooms as large as 400 sq. ft. with a 1.4 gal. tank.

Promising review: "Highly sophisticated humidifier that has many features to make operation a breeze. This humidifier is truly a set it and forget it type of humidifier. I have previously owned the old-fashioned type of humidifiers that only blew at one rate and needed to be filled every night. This is a delightful change." —ptdofatl

Get it from The Home Depot for $89 (three colors).

4. An essential oil diffuser that moonlights as a cool-mist humidifier *and* is a dead ringer for one I saw at a fancy spa.

Works with 100% essential oils, runs quietly for up to six hours, and has two mist settings and auto-shutoff when the water runs out.

Promising review: "I love this little humidifier! It is smaller than I thought, but it is great! The colors changing are lovely, it runs for a long time and make the whole room smell great with just three drops of EOs. I actually want to get at least one more, as I find myself moving it from room to room. I like that the color change mode is optional and that there are solid color options too. I can pick a color that reminds me of the scent in it, or to match the room it is in." —Ericca Colby

Get it from Amazon for $18.95.

5. A ~versatile~ humidifier with options for both warm and cool mist (in case you want both)!

Has anti-microbial technology that helps prevent the growth of molds and mildews on the surface of the tank, nightlight, and auto-shutoff when the tanks are empty. Runs for up to 72 hours and meant for spaces as large as 400 sq. ft. with a 1.7 gal. dual-tank capacity.

Promising review: "This item is the best humidifier we've ever bought. Its only weak point is the (very, very quiet) centrifugal fan, which has failed in the oldest of these that we own. However, we run two of these 24/7 all winter long, so that's really heavy-duty use. Make sure to use the cartridges to absorb minerals in the water." —kobear

Get it from Amazon for $94.99, Target for $94.99, Bed, Bath & Beyond for $99.99, or Wayfair for $101.99.

6. A Dyson humidifier/fan combo that uses UV light to kill 99.9% of bacteria in its cool mist and has been allergy and asthma certified by the Asthma and Allergy Foundation of America.

Uses a 3-minute UV cleanse technology cycle to kill 99.9% of bacteria in the water, which makes it good for filling with hard water. Has a sleep timer, and auto- and tip over–shutoff. Works for rooms up to 172 sq. ft. and runs for as long as 18 hours.

Promising review: "Great, best one I have ever owned. Very limited mist, no wet carpet. Auto mode is excellent, very effective, and much quieter than the many other brands I have had. Easier to clean, no filter, bacteria cleaner. Highly recommenced if you can afford it." —Merc88

Get it from Amazon for $470.99, Nordstrom for $499.99, Walmart for $499.99, Jet for $499, Bed Bath & Beyond for $499.99, or Kohl's for $499.99.


7. A compact woodgrain babe with four timed settings and cool-mist output because you deserve a ~stylish~ option that looks like a design choice rather than a seasonal stuffiness aide.

Easily removable cap for refilling, adding essential oils, and cleaning. Has seven light colors with steady or changing color options, four timed setting modes, and auto-shutoff when water is used up. Holds up to 300ml of water and produces up to 30ml of moisture per hour. Can run quietly up to 10 hours of continuous output.

Promising review: "We bought two. We like them a lot. Super easy to clean — that was a big selling point for us! Also seems to handle the essential oils just fine — we like how the compartment is completely separate from the motor. Lots of light options which can take a while to cycle through, especially when your 5-year-old is 'choosing' his color for the evening. We have one in a guest room and our current guest noticed a difference after her first night with the humidifier making the air much more moist. We will most likely buy a third one in the next few months to use in our room." —Tracy Leaman

Get it from Amazon for $29.99+ (available in five colors) or Walmart for $34.95.

8. A Vicks warm-mist wonder perfect for using with soothing liquid inhalants.

Has a protective steam guard design, nightlight, and medicine cup for use with liquid inhalants such as Vicks VapoSteam or Kaz Inhalant. Runs for 18–24 hours with a 1.5 L capacity.

Promising review: "Great unit at an unbeatable price — we love it! Remember, everybody's water is different so you must experiment with how much salt (if any) to add for optimum performance. Follow the directions and use it properly, and it works perfectly. Also, when you see residue in the water that just means it is working (those particles are just the impurities in your water that are left behind). Our old unit would not run for more than a few hours, but this one is the perfect size to keep the air moist for the entire night. We don't particularly use the nightlight feature, but it does remind us that the unit is still plugged in which is helpful." —Corgi Luv

Get it from Amazon for $14.89, Jet for $14.89, Target for $14.89, or Bed, Bath & Beyond for $19.99.

9. A cool-mist giant with a 5 L tank and a run time of up to 17 hours in a sleek, low-key design.

Has three mist outputs, sleep mode, and auto-shutoff when tank is empty. Quietly runs up to 14–17 hours with a 5 L tank.

Promising review: "This little guy works well. Totally quiet and does the job in our huge bedroom. In the winter the relative humidity in our house is about 13%, SUPER dry; we can hardly pet our poor cat without electrocuting her One thing to note is that we have an artesian well and we use that water to run the humidifier. It leaves a really fine, white, dusty film on everything throughout the house. It's recommended that you use distilled water in the humidifier, but we live 25 miles out into the country and seriously, who's going to drive 50 miles round trip for humidifier water? Not us. We'll live with the dust. I'm guessing it wouldn't happen with distilled water. So, just be aware, if you use tap water, you might get similar 'dust,' depending on what's in your water." —Rush

Get it from Amazon for $69.99.

10. A sculptural ultrasonic humidifier that distributes cool mist for as long as 45 hours per filling, which means you can base your schedule around something more thrilling.

Has nine adjustable mist settings, works for rooms up to 650 sq. ft., and includes a demineralization cartridge.

Promising review: "I keep this on the second to lowest setting all day, every day. It needs to be refilled every morning but does last for 25–26 hours. The most significant change was my lips are no longer extremely chapped. I definitely can notice when people aren't using a humidifier in their homes, as I feel parched and find myself using ChapStick and drinking more water than normal to compensate. My apartment is 888 sq. ft. and the moisture level in my home stays steady now at around 51. I plan to buy another one for the bedroom now that winter is upon us and the air will likely get drier. Benefit, it has helped me keep my fern alive and my other plants are also looking lively and happy." —heatharoks

Get it from Walmart for $132.46, Target for $132.99, Jet for $139.99, Wayfair for $139.99, The Home Depot for $139.99, Bed Bath & Beyond for $139.99, or Kohl's for $179.99.


11. A cool-mist fixture with some serious hydrating spread.

Has an anti-microbial tank and base to help prevent bacterial growth, permanent ceramic filter, digital LED display, rotating mist nozzle, 15-inch extension nozzle, five mist settings, and a 24-hour timer. Runs for up to 96 hours in rooms as large as 600 sq. ft. with a 1.7 gal. tank.

Promising review: "Bought my first one about three months ago. Bought second about one month late. Absolutely no noise. Living at 7,500 ft. in Colorado it is very dry. This one went in my bedroom. Sleep much better now." —happy1

Get it from Amazon for $89.99 (three colors), The Home Depot for $89.97 (black), or Bed, Bath & Beyond for $89.99 (four colors).

12. A compact ultrasonic drop that puts out cool mist and is super easy to clean.

Has a removable tank, refill indicator, and no filter. Runs for up to 24 hours in rooms up to 250 sq. ft. with a 1 gal. capacity.

Promising review: "First of all, I'd like to say I really was looking for a warm mist with a bigger capacity. So why did I buy this one? Because I was hopeful it would be easier to clean. And it is. You do need to clean a humidifier often (at least weekly) but at least this one does not make the chore laborious and you can have it back up and running quickly." —Cheri Lewis

Get it from Amazon for $39.98 (nine colors), Bed, Bath & Beyond for $49.99 (seven colors), Jet for $49.99 (five colors), Target for $49.99 (four colors), Walmart for $42.68 (white), Wayfair for $53.99 (three colors), Kohl's for $59.99 (two colors), or Macy's for $74.99+ (three colors).

13. A powerful cool-mist model designed with an aromatherapy tank cap for making your indoor air smell ~lovely~.

Has a triple-layer filter enhanced with baking soda, removable tank, two speed settings, and filter reminder dial. Runs for up to 24 hours with a 1 gal. tank.

Promising review: "This humidifier is replacing one that we had made by Hunter. The Hunter has been with us for over 10 years and is one of the best, in my opinion. My husband has repaired it to use in a different room, but it's still going! This new Sunbeam is really quiet and has a nice flow of humidity. I fill it once daily and it seems to be working as it is advertised. I think the water tank could be a better design for gripping once full, but it is lightweight and works well. I like that I can see the water level, too. No lights on it to disturb our sleep. Has two speeds, so we left it on high (2) for two whole days to speed up the moisture release, then we turned it down to low (1) to run constantly. It will run every night and day until springtime, like our Hunter does. For the price point, this unit is one that I would most definitely buy again!" —DebR

Get it from Walmart for $21.44 or Jet for $21.44.

14. A no-nonsense ultrasonic cool-mist gadget with technology that prevents mold and mildew growth.

Has SilverClean technology to fight the growth of slimy mold and mildew on the surface of the water tank, a nightlight, and three speed settings. Runs up to 70 hours with a 1 gal. tank.

Promising review: "My new humidifier works really well. I like the three different mist settings, and the fact that it is whisper quiet. The blue nightlight is calming. I've had other humidifiers, and this is, by far, the easiest to fill." —Coloradojane

Get it from Amazon for $44.99, Walmart for $44.99, Jet for $44.99, The Home Depot for $44.99, Target for $49.99, Kohl's for $59.99, or Wayfair for $62.99.


15. A warm-mist humidifier that's filter-free with a large tank opening for easy-peasy cleaning.

Has a medicine cup for use with liquid inhalants, two output settings, auto-shutoff when empty, tank handle for easy carrying, and removable dishwasher-safe parts. Runs for up to 24 hours with a 1 gal. tank.

Promising review: "Being pregnant, my sinuses have been constantly giving me trouble, especially at night. Since using this product, I can finally breathe at night and when I wake up in the morning. Also, when my baby gets here, it will be perfect to use for her if she gets sick!" —cass

Get it from Walmart for $29.86, Jet for $29.86, or Target for $29.99.

16. An aromatherapy humidifier with seven soothing lighting options.

Has a nightlight, auto-shutoff when water runs out, and three timer settings. Runs up to 10 hours with 500 mL capacity.

Promising review: "This diffuser is a beast. I purchased three different diffusers at one time. This one produces a much stronger mist. Holds much more water. After five hours, the oils have not lost their scent. I purchased another one for the office." —Louiie25

Get it from Amazon for $23.99.

17. A cool-mist choice in a compact frame that can run up to 30 hours!!!

Has Silver Clean Protection to help fight the growth of mold and mildew on the water tank. Runs up to 30 hours with a 0.5 gal. tank.

Promising review: "Compact size, quiet operation, corrected dry air problem in 15'x15' room. Easily refilled and cleaned. Have used for a few months, no problems, appears to be very well-made." —phillip33

Get it from Amazon for $29.89, Jet for $38.86, Bed, Bath & Beyond for $38.99, Walmart for $39, Target for $39.99, or Wayfair for $56.99.

18. An ultra-silent option with a microporous cartridge for ordorless cool mist.

Has a built-in timer, LED display, sleep mode, and a 360-degree rotatable nozzle for uniform distribution. Runs up to 15 hours with a 4 L capacity.

Promising review: "This humidifier is as advertised; quiet, digital options, easy to refill, good looking/whats cookin', etc. I have had many expensive humidifiers for my instrument vault over the years and this humidifier is a bargain. It is quiet to the point of, if it didn't have a readout I would think it was turned off." —Thom Davis

Get it from Amazon for $91.99+ (two colors).


Reviews have been edited for length and/or clarity.