The 10 Best Essential Oil Diffusers of 2020

Transform any room into a spa

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Our Top Picks

Best Water Capacity: Aroma Essential Oil Diffuser at Amazon

"With a capacity of 1500 milliliters of water, the diffuser can run between 10 to 20 hours, depending on the mist setting."

Best Quiet: Silent Ultrasonic Aromatherapy Diffuser at Sharper Image

"Through ultrasonic vibrations, oil particles break down into microparticles, quietly transforming into an ultrafine mist."

Best Auto Shut-Off: SpaRoom Helix at Target

"The automatic safety shut-off function helps conserve oil and prevent damage to the unit, and it is perfect for nighttime."

Best with Humidifier: HoMedics Mist Humidifier at Bed Bath & Beyond

"Choose to dispense essential oils while humidifying the room, or use the two features independently."

Best Budget: Tagital Aroma Essential Oil Diffuser at Walmart

"The budget-friendly diffuser is easy to operate with only four steps to get started, and it is stylish enough to keep in any room."

Best with Remote Control: URPOWER Essential Oil Diffuser at Amazon

"It comes with a wireless remote control so you can manage settings from over 16 feet away, and it runs for up to 23 hours."

Best with Alarm Clock: iHome Zenergy Aroma Dream at Amazon

"Set customized alarms and timers with the ability to gradually wake up to a choice of sounds and smells."

Best Voice-Controlled: Geeni Smart Wifi Essential Oil Diffuser at Amazon

"It’s both wifi-compatible and voice-enabled with Amazon Alexa, Google Assistant, and Microsoft Cortana."

Best Eco-Friendly: EKOBO Essential Oil Diffuser at Anthropologie

"This nebulizing essential oil diffuser is crafted from FSC-certified wood—meaning it was sourced from a sustainably managed forest"

Best for Kids: SpaRoom Essential Oil Diffuser at Macy's

"The brightly designed diffuser features an assortment of animated sea creatures, along with a color-changing aquarium light show."

Essential oils are highly concentrated plant extracts that are distilled to capture the plant's natural essence and scent. Today’s popular use of essential oils stems from the ancient belief and practice of aromatherapy, which harnesses naturally occurring compounds for purported therapeutic benefits. 

While there are many varieties of essential oil diffusers, they all serve the same purpose—to spread a therapeutic aroma throughout your home. Whether the essential oils are transmitted through water, heat, or electricity, diffusers disperse them into the air as a fine, breathable mist.

Oil diffusers are also a popular, safe alternative to synthetic air fresheners and scented candles. To bring aromatherapy into the home, see our picks for the best essential oil diffusers, categorized by key features.

Our Top Picks

Best Water Capacity: 1500ml Aroma Essential Oil Diffuser, Large

The most significant feature of this diffuser is the exceptionally large water tank. With a capacity of 1500 milliliters of water, the Exqline diffuser can run between 10 to 20 hours, depending on the mist setting. The 270-degree knob allows for a much greater degree of control over the level of fragrant mist and humidity emitted. 

This BPA-free unit functions as both a humidifier and an aromatherapy diffuser, humidifying rooms up to 325 square feet and diffusing essential oils in spaces up to 450 square feet. The whisper-quiet diffuser also features seven different lighting options to conform to different environments and times of day.

Best Quiet: Silent Ultrasonic Aromatherapy Diffuser

Silent Ultrasonic Aromatherapy Diffuser

Courtesy of Sharper Image

Quietly freshen the room with the Silent Ultrasonic Aromatherapy Diffuser. From the office to the kitchen, this modern globe unit comes in a stylish black or wood grain finish, fitting into the decor of any room. 

It features adjustable mist settings—low, medium, and high—and runs either continuously for 12 hours or on a set timer. When the water tank is empty, the unit will conveniently shut off.

Through ultrasonic vibrations—high-frequency sound waves beyond the range of human hearing—oil particles break down into microparticles, transforming into an ultrafine mist. This process is ideal for nighttime relaxation as it allows the diffuser to run silently.

Best Auto Shut-Off: SpaRoom Helix

SpaRoom Helix

Courtesy of Target

This ultrasonic essential oil diffuser is a great option for those looking to introduce a diffuser into their nighttime routine. Featuring a candlelight mode, the diffuser gently lights the night or sets the mood with a selection of rotating, colored lights.

The SpaRoom Helix features a 200-milliliter tank that can run continuously for up to six hours, or intermittently for up to 12 hours. The automatic safety shut-off function helps conserve oil, prevents any damage to the unit, and keeps the diffuser from overwhelming the room with fragrance.

Thie essential oil diffuser is easy to use and maintain with only two buttons—one for lighting and one for power. After use, it can simply be wiped clean.

Best with Humidifier: HoMedics 2-in-1 Warm & Cool Mist Ultrasonic Humidifier

HoMedics® TotalComfort™ 2-in-1 Warm & Cool Mist Ultrasonic Humidifier

 Bed, Bath & Beyond

This ultrasonic humidifier features the best of both worlds. The duo-unit humidifies the air with both cool and warm mist options, while the essential oil tray adds versatility. Choose to dispense essential oils while humidifying the room, or use the features independently.

Notably, this humidifier runs for up to 26 hours with auto shut-off when the water tank is low. The 360-degree nozzle provides maximum coverage for spaces up to 200 square feet, and settings are easily adjustable with the compatible remote control.

The tall, sleek design is made to sit nicely on a tabletop or on the floor. The unit is also armed with clean tank technology, which helps protect the tank from growing mold and mildew.

Best Budget: Tagital 300ml Aroma Essential Oil Diffuser

Tagital 300ml Aroma Essential Oil Diffuser, Wood Grain Ultrasonic Cool Mist Humidifier for Office Home Bedroom Living Room Study Yoga Spa

 Courtesy of Walmart

This budget-friendly diffuser is easy to operate with only four steps to get started. Simply fill the water tank, add a few drops of essential oils, connect the unit to a power source, and set the mist and lighting to the desired settings. The mist controls offer three timers, along with continuous mode. Seven colored LED lights offer aesthetic versatility to any space. 

Inspired by nature, this ultrasonic diffuser features a wood-grain coating that subtly fits into any room, and it operates both as an essential oil diffuser and a humidifier. The Tagital 300ml Aroma Essential Oil Diffuser runs quietly for up to nine hours and automatically shuts off when the water tank is empty.

Best with Remote Control: URPOWER 1000ml Essential Oil Diffuser

This 3-in-1 essential oil diffuser not only dispenses your favorite scent, but also functions as a night-light and humidifier. It comes with a wireless remote control so you can manage settings from over 16 feet away.

Housing a 1000 milliliter water tank, the diffuser runs for up to 23 hours on low mist mode. Choose from multiple timed intervals and adjustable mist modes for a personalized experience. The seven LED light settings allow the unit to be used as a night-light, or several functions can be combined for a multi-sensory experience.

Best with Alarm Clock: iHome Zenergy Aroma Dream

The iHome Zenergy Aroma Dream features a collection of therapeutic soundtracks, from nature to white noise. Set customized alarms and timers with the ability to gradually wake up to a choice of sounds and smells. This multifaceted diffuser also features a built-in AC adapter to charge electronic devices.

Have full control of aromatherapy, soothing soundtracks, and the alarm clock with a detachable remote control. With a water capacity of 250 milliliters, the unit can run for up to 54 hours.

Best Voice-Controlled: Geeni Smart Wifi Essential Oil Diffuser

This diffuser is the perfect addition to any smart home. It’s both wifi-compatible and voice-enabled with Amazon Alexa, Google Assistant, and Microsoft Cortana. With built-in wifi, it doesn't require a hub.

The user-friendly interface is easy to operate with clearly labeled buttons. The diffuser can be controlled from anywhere using the free Geeni smartphone app. Additional features like colored LED lighting, mist output, timers, and custom scheduling can all be controlled within the app. This ultrasonic diffuser works quietly, emitting a superfine mist for up to 12 hours continuously.

Best Eco-Friendly: EKOBO Essential Oil Diffuser

EKOBO Essential Oil Diffuser

 Anthropologie

This nebulizing essential oil diffuser is crafted from bamboo fiber, FSC-certified wood (meaning it was sourced from a sustainably managed forest), and glass. It's also free of harmful, toxic plastic.

Nebulizing diffusers operate without heat or water. Instead, the essential oils are poured into the unit and a small pump mists the fine oil molecules into the air. Since the oils are in their purest form, this type of diffuser uses more oil, but it requires far less run time to saturate a room. 

The EKOBO Essential Oil Diffuser uses a silent air pump within the base and a glass chamber to hold the essential oils. This diffuser can fully disperse the fragrant mist throughout a room of up to 1000 square feet in under 15 minutes.

Best for Kids: SpaRoom OceanMist Essential Oil Diffuser

SpaRoom OceanMist Essential Oil Diffuser

 Courtesy of SpaRoom

Aromatherapy is generally safe for kids, as long as it's administered safely and with supervision. This kid-friendly essential oil diffuser from SpaRoom safely dispenses a gentle stream of fragrant mist throughout a child's room. With variable mist control, it’s easy to adjust the output strength.

Running between six to 24 hours, the diffuser offers both continuous and intermittent modes, covering up to 200 square feet. The unit also offers auto shut-off for safe use. The brightly designed diffuser features an assortment of animated sea creatures, along with a color-changing aquarium light show.

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Article Sources
Verywell Mind uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Read our editorial process to learn more about how we fact-check and keep our content accurate, reliable, and trustworthy.
  1. John Hopkins Medicine. Aromatherapy: Do essential oils really work?

  2. John Hopkins Medicine. Are essential oils safe for children? Updated January 7, 2020.