I’m glad you’re interested in the best ultrasonic essential oil diffusers.
A diffuser like one of these is an easy, inexpensive way to do aromatherapy.
But there are other essential oil diffuser benefits.
An ultrasonic diffuser will fragrance your home to make it more comfortable and welcoming.
It can also reduce germs during cold and flu season.
That’s right. Science shows that sufficient humidity gets rid of the flu virus (1).
But how do you know which is the best ultrasonic essential oil diffuser?
- How to Choose the Best Ultrasonic Diffuser
- How Do Ultrasonic Diffusers Work?
- Which Oils Are Best for Diffusing?
- Homework Motivation
- Tropical Vacation
- Relaxing Retreat
- Banish Colds and Flu
- Crane Essential Oil Diffuser Cool Mist Humidifier
- PureGuardian H4810AR Ultrasonic Warm and Cool Mist Humidifier
- InnoGear Upgraded Version Aromatherapy Essential Oil Diffuser
- Ominihome Metal Diffuser
- Ellia, Dream Ultrasonic Essential Oil Aromatherapy Diffuser by HoMedics
- Sparoom – AromaMist Ultrasonic Essential Oil Diffuser
- Anthun Rock Pattern Handmade Glass Art Ultrasonic Diffuser
- Joly Joy Ceramic Essential Oil Diffuser
- Tomons Essential Oil Aroma Diffuser in Glass and Natural Wood
- COSVII Aroma Glass Diffuser for Essential Oils
- Glass Essential Oil Diffuser Cold Mist Humidifier by PUSEAYZ
- Young Living Aria Ultrasonic Diffuser
- Edens Garden Hand-Crafted Ceramic Diffuser
- Royal Living Crystal Cave Ultrasonic Aromatherapy Humidifier
- SpaRoom AromaHarmony Ultrasonic Essential Oil Diffuser with Bluetooth
- URPOWER 1000ml Essential Oil Diffuser Humidifier with Remote Control
- Exqline Diffuser for Essential Oils Large Aromatherapy Diffuser
- VicTsing Essential Oil Diffuser, 300ml
- BlueHills Premium 2000 ML XL Large Essential Oil Diffuser
- Sierra Modern Home Smart Wifi Essential Oil 400ml Ultrasonic Diffuser
- GuruNanda Portable Ultrasonic “Misti” Aromatherapy Oil Diffuser
How to Choose the Best Ultrasonic Diffuser
To avoid disappointment after purchasing a diffuser, make sure you consider these features first.
- Coverage area – how far can the vapor reach? Most diffusers specify the square footage.
- Convenience – is it easy to refill and clean?
- Controls – does it have a timer, adjustable mist, and a way to manage the mood light?
After you find a diffuser that matches your needs with regards to those points, then think about your décor. There are so many essential oil diffusers on the market that you are sure to find exactly what you want.
For example, consult my article about the best essential oil diffuser for a large space. You’ll see that there are several different types and styles, including smart diffusers.
How Do Ultrasonic Diffusers Work?
Ultrasonic diffusers and cool mist humidifiers are very similar, but you can’t use a regular humidifier to disperse essential oil. You’ll gum up the works if you try.
Ultrasonic models are very quiet. They emit a visible mist that contains water vapor and tiny particles of essential oil.
Inside, there is a ceramic disk that vibrates at ultrasonic frequencies. It breaks up the liquid into tiny droplets that emerge into the air (2).
If you use distilled or filtered water and clean the tank regularly, you should be able to enjoy years of reliable service.
Which Oils Are Best for Diffusing?
You may have heard that some diffusers can’t handle thick oils like sandalwood. That’s true of some nebulizers – the waterless diffusers with glass reservoirs.
Happily, ultrasonic diffusers can diffuse any essential oil. They only require a few drops each time you run them.
Break-in your new diffuser with one of these recipes.
- 4 drops rosemary
- 1 drop peppermint or 2 drops spearmint
- 3 drops lavender
- 3 drops sweet orange
- 1 drop jasmine
- 1 drop cinnamon
- 3 drops sandalwood
- 4 drops bergamot
Banish Colds and Flu
- 3 drops frankincense
- 2 drops lemon
- 2 drops eucalyptus or 2 drops tea tree oil
Now let’s begin the reviews of the best ultrasonic diffusers for essential oils.
Crane Essential Oil Diffuser Cool Mist Humidifier
Here’s a brand that you’ll recognize if you’ve ever owned a cool mist humidifier.
Crane created this humidifier differently. It has a tank adapted to handle essential oils.
It holds about 21 ounces to run up to 8 hours. But it’s best-suited to small spaces under 150 square feet like a child’s bedroom.
There’s no filter, but you will need to clean the tank.
The nozzle adjusts 360°, which allows you to aim the mist away from furnishings. Plus, you can enjoy the color-changing nightlight or turn it off if you wish.
Fortunately, when the water runs out, the diffuser shuts down automatically.
PureGuardian H4810AR Ultrasonic Warm and Cool Mist Humidifier
This is a warm and cool mist humidifier with a 2-gallon tank. It’s perfect for when you’re trying to get over a cold.
When it’s full of water, it will run up to 120 hours before it needs a refill. Instead of putting the essential oil in the tank, put it in the aromatherapy tray.
The tank itself has Silver Clean Protection technology that prohibits mildew and mold from growing inside.
Choose from 3 speed modes, adjust the nightlight, and put it on a timer if you like.
InnoGear Upgraded Version Aromatherapy Essential Oil Diffuser
Without a doubt, this is one of the top 10 diffusers. It’s cheap, customizable, and perfect for small spaces up to 150 ft.².
Moreover, you can run it with tap water.
There are 3 modes: intermittent mist, continuous mist, and light only. With a full reservoir of 3 ounces of water, it works 4 hours continuously or 8 hours intermittently.
Ominihome Metal Diffuser
If you’re shopping for one that doesn’t look like the typical diffuser, check out the elegant bronze case on this one. It encloses the water reservoir to hide it from view.
The interior light changes through 7 different colors to showcase the beautiful exterior.
While in operation, it makes less than 35 dB of noise. A full tank lets it work up to 20 hours continuously.
The company offers a lifetime warranty and a 12-month return policy with free shipping.
Ellia, Dream Ultrasonic Essential Oil Aromatherapy Diffuser by HoMedics
HoMedics includes 3 sample oils with the Ellia diffuser. I can’t speak for the quality of their oil as I’ve never tested it myself. But since these are only 2 mL each, they won’t last long. You can always get more of the best-smelling essential oils for diffusers.
When full, it runs up to 6 hours continuously were 12 hours intermittently. Like many other diffusers, it has a color-changing light with a soft glow.
Sparoom – AromaMist Ultrasonic Essential Oil Diffuser
Sparoom also provides a sample bottle of essential oil with the Aromamist diffuser. It holds 4 ounces of water and runs up to 3 hours continuously. There is a built-in light that changes colors.
The company says you can use tap water, but I’d recommend distilled. The reason why is that ultrasonic diffusers will leave white dust on furniture from the minerals in the tap water.
Anthun Rock Pattern Handmade Glass Art Ultrasonic Diffuser
The exterior of the diffuser is handmade glass that resembles marble. It makes the device look like a decorative vase, not a humidifier.
When the 7-color LED light is on, it emphasizes the beauty of the design.
The interior reservoir is BPA-free plastic.
Joly Joy Ceramic Essential Oil Diffuser
And here’s another decorative diffuser made for a small room.
The exterior is hand-crafted ceramic. The interior is lit with a warm white light. It contains a BPA-free water tank that holds 110 mL.
In continuous mode, it runs up to 3 hours. In intermittent, it lasts 6 hours. When the water runs out, the power goes off automatically.
Tomons Essential Oil Aroma Diffuser in Glass and Natural Wood
Although this may appear to be one of those cheap plastic diffusers, it’s made of glass mounted on a natural wood base.
It has a color-changing LED and 3 mist modes. When full, it operates up to 6 hours continuously or 8 hours intermittently.
When the tank is dry, the diffuser powers down.
COSVII Aroma Glass Diffuser for Essential Oils
This isn’t a glass decanter, but an ultrasonic humidifier. It’s ultraquiet, making less than 21 dB of noise.
It holds about 4 ounces of water and will run continuously up to 4 hours. Otherwise, you can set it to intermittent operation where it sprays once every 15 seconds for up to 8 hours.
It’s best for small rooms up to 160 ft.².
Glass Essential Oil Diffuser Cold Mist Humidifier by PUSEAYZ
For the safety-minded among us, here’s a diffuser with FCC and ETL certifications.
It features 4 timer settings. Choose from 30 minutes, one hour, 2, or 3 hours with the press of a button.
Another control lets you select a single color for the light, or let it slowly cycle through all the available shades.
The manufacturer offers a 6-month warranty and a 45-day money-back guarantee
Young Living Aria Ultrasonic Diffuser
The Aria diffuser carries a hefty price tag but offers a more complete set of features. It also comes with a remote control.
It can play music stored on its internal memory, or you can plug in an external device and use it as a speaker.
The remote manages the timer and the built-in light.
While it’s running, the Aria can fragrance up to 430 ft.². When you’re done with it, the glass reservoir is dishwasher-safe for cleaning.
Edens Garden Hand-Crafted Ceramic Diffuser
Edens Garden offers a variety of diffusers. Each one is built for ease-of-use and safety.
This model provides intermittent or continuous misting. There’s also a built-in light that you can brighten or dim or turn off completely.
It holds a little over 3 ounces of water and is best suited for small spaces.
Royal Living Crystal Cave Ultrasonic Aromatherapy Humidifier
The electroplated glass enclosure on this diffuser makes it uniquely gorgeous. The warm white light calls attention to its beauty.
On a full tank, it runs up to 8 hours intermittently.
SpaRoom AromaHarmony Ultrasonic Essential Oil Diffuser with Bluetooth
What’s the point of having a Bluetooth diffuser? Why, playing music from your phone, of course!
As a massage therapist, this compact diffuser appeals to me. I can bring it with me as it provides light, fragrance, and music all at once.
When it sprays at 15-second intervals, the water lasts up to 6 hours and can reach up to 200 ft.².
URPOWER 1000ml Essential Oil Diffuser Humidifier with Remote Control
If you have a large room, consider this one-liter diffuser. It runs up to 20 hours in low mist mode.
It comes with a remote control so that you can sit on the sofa and manage the timer, the light, and the intensity of the vapor.
Exqline Diffuser for Essential Oils Large Aromatherapy Diffuser
Here’s another diffuser made for large spaces up to 450 ft.². It holds about a half-gallon of water and operates up to 20 hours before it needs a refill.
You can rotate the nozzle to direct the mist toward you and away from the furniture. The dial sets the intensity of the mist.
This device is ETL-certified for safety, and it comes with a 1-year warranty.
VicTsing Essential Oil Diffuser, 300ml
The VicTsing 300ml diffuser is a popular choice for medium-sized rooms up to 300 ft.². It runs up to 10 hours and has 4 timer settings and adjustable mist.
One of the standout features is the light. There are 7 colors, and you can dim them or brighten them or turn the light off completely.
The manufacturer provides a 45-day money-back guarantee with a 12-month warranty.
BlueHills Premium 2000 ML XL Large Essential Oil Diffuser
It’s a pain to refill the tank, I know. But this diffuser has a 2-liter reservoir and it runs up to 40 hours continuously. When the water gets too low, it shuts down by itself.
The dial controls the mood light and the amount of mist.
Sierra Modern Home Smart Wifi Essential Oil 400ml Ultrasonic Diffuser
Sierra Modern’s diffuser is Wi-Fi connected and compatible with voice commands through Alexa and Google Home.
Otherwise, you can install the Android or iPhone app and manage it with that instead.
Either way, you don’t even need to touch the diffuser to control the lighting, adjust the intensity, or set a timer. It’s too bad that it doesn’t refill itself automatically, too. At least the tank lasts for 12 hours of continuous operation.
It comes with 24-hour support and a 1-year warranty.
GuruNanda Portable Ultrasonic “Misti” Aromatherapy Oil Diffuser
If you love essential oils, get yourself a portable diffuser. This one will work in your car, your office, or wherever you need it. It has a rechargeable battery that recharges over USB.
You won’t overwhelm yourself with fragrance in small spaces as it has a 1-minute timer.
Did you find a new ultrasonic essential oil diffuser today? If so, tell me about it in the comments below.
Ultrasonic diffusers are inexpensive to buy and use. They are a quick and easy way to improve the environment in your home or office.
They allow you to enjoy essential oils throughout the day and night.
Check back soon to learn more about essential oils and aromatherapy.
1. https://www.bbc.com/future/article/20151016-the-real-reason-germs-spread-in-the-winter by David Robson, published October 19, 2015, accessed October 16, 2019
2. https://www.quora.com/How-do-ultrasonic-humidifiers-work by Kaushik Parashar, published August 9, 2012, accessed October 16, 2019