Best Ultrasonic Essential Oil Diffuser 2021: Complete Reviews with Comparisons

Ultrasonic diffusers are becoming more and more popular, but how do they work and which are most effective? The best ultrasonic essential oil diffuser will use electricity to break down the oil into microparticles that will then mix with the water.

The water is then misted into the air as a kind of cool mist humidifier that both humidifies the air and cleans it with the aroma’s properties. This unique kind of diffuser is trendy, so there are a lot of great options on the market. These top five though stand out as the best of the best upon closer investigation.

Comparison Chart

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Best Ultrasonic Essential Oil Diffuser Reviews

InnoGear 2nd Version Essential Oil Diffuser

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The InnoGear 2nd Version Essential Oil Diffuser is a unique but reliable type of ultrasonic essential oil diffuser that uses cool mist to disperse oils. It is a small yet straightforward diffuser that works best in small or medium-sized spaces.

Review

This is an inexpensive product that is made out of plastic and has its fair share of manufacturing issues, but the way that the manufacturer handles those problems and how most of the product holds up makes it worth the investment.

This product has three different working modes (intermittent, light only, and continuous) that you can easily switch between. While the tiny reservoir makes it hard to use this effectively in a large space, that same small size makes this compact diffuser perfect for small spaces or even for your office.

When the water is out on this model, it will automatically shut off. Since the mist produced is very fine, you will notice the scent almost immediately if you use this in a small space.

The simple design of this model is also worth mentioning. While there are seven different colored lights and a few lighting modes, changing between these modes is still easy to do. Once you check out the user manual, you’ll find that you can work with this product easily without much of a learning curve at all.

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Pros

  • Easy to use
  • Shuts off automatically
  • Compact and lightweight
  • Quiet operation
  • Not too bright

Cons

  • Continuous mode only lasts three hours
  • Not good for large rooms
  • “Mode” indicator light cannot be turned off, just the big light

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URPOWER Essential Oil Diffuser

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The URPOWER Essential Oil Diffuser is an ultrasonic essential oil diffuser that can be used in small to medium-sized rooms with good effectiveness.

Review

The first thing that you are likely to notice about this diffuser is the unique design that it offers. Available in three different color palettes, the rounded edges and a unique misting portion will help it become more than just a diffuser. You could almost consider it a type of home decoration.

The water reservoir on this model is relatively small at 150 milliliters, but the diffuser can effectively humidify and scent rooms with a size of up to 215 square feet with ease. The mist on this model will run in two different modes: intermittent or continuous. Depending on what mode you choose, it can run for up to eight hours.

The light on this model only comes out of the top and bottom, so it’s not as glaringly bright as the LEDs on some models. That is nice if you want to use this while sleeping, but the color change still gives off a nice aura throughout your usage time. You can also easily adjust the color and timing of the lights, which is very convenient.

Additionally, URPOWER really wants to be sure that you like this diffuser if you purchase it. That is why the model comes with a limited one-year warranty in addition to a 100% money-back guarantee for 90 days. If you hate it, they’ll do their best to make it right ASAP, so what is there to worry about?

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Pros

  • Light can be turned off completely
  • Compact size
  • Runs quietly
  • Easy to clean
  • Available in different colors
  • Can work as a decor

Cons

  • The power cord connects at the bottom.
  • Can only use a few drops of oil at a time
  • Cannot humidify large rooms effectively

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Anjou Essential Oil Diffuser

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The last option of ultrasonic diffusers that we have today is the Anjou Essential Oil Diffuser.

Review

The Anjou has a contemporary design and features a wood grain finish with a teardrop-like light top. The LED light can be be set to 1 of 7 different colors to suit your mood or living space.

This has a 500mL capacity reservoir, and it can be run for up to  6-10 hours continuously or set per timer to 1, 3, or 6 hours.

Finally, this model is reasonably quiet! You don’t have to worry about the operation sounds keeping you up at night, as the sound it makes is a gentle hum, which can be soothing.

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Pros

  • Contemporary and classy design
  • Fairly quiet operation
  • Auto-shut off

Cons

  • Some reports that operating the unit is not easy or intuitive
  • Some reports that mist distribution is not even

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Conclusion

Among all of these options for the best ultrasonic essential oil diffuser, we’ve found that the InnoGear 2nd Version Essential Oil Diffuser is the top choice. It is effortless to use, has an intuitive button design, and can fit into any sized space.

If you want an alternative option, our second recommendation would be the Urpower Essential Oil Diffuser because of its large reservoir, sleek design, and simple buttons. While there is a bit of a learning curve, it’s a smart choice for many homes.

Regardless of your final choice, you’ll find that all of these ultrasonic diffusers effectively disperse the essential oils of your choice!

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