11 Best Essential Oil Diffusers [Tested and Reviewed]

AromaPlan's New Scent Air Diffuser DAP 1001 is an atomizing diffuser advertised as being able to diffuse fragrances over 1,500 to 2,000 square feet with a single unit. The New Scent Air Diffuser DAP 1001 received a high score for speed of diffusion, with the fragrance reaching a person eight feet away in two minutes and five seconds. It also has impressive range, with the scent perceptible 19 feet away. With this combination of speed and range, at the push of a button you should be able to enjoy the scent of your choice no matter where you are in the room.

Another advantage is that it is easy to use, as no special maintenance is required. On the other hand, at 50.3 dB, the operating noise is somewhat loud for use during sleep, and testers mentioned that the low sound echoes and could be disruptive. It is best to use it during the daytime, when these sounds blend in with the ambient noise of daily life. The New Scent Air Diffuser DAP 1001 was able to diffuse fragrances over a wide area very quickly, and requires little to no maintenance. This diffuser is recommended for busy people who want to relax with the help of essential oils.

Loxim's aromatherapy diffuser is an atomizing diffuser. It is compact and cordless, perfect for use in the car or on the go. This diffuser received a high score for its speed. The fragrance was perceptible at eight feet in as little as eight minutes. In addition, after 30 minutes, the scent spread to a range of 11 feet. This shows the diffuser has superior diffusion power in spite of its small size.

Maintenance is as simple as replacing the bottle with an empty one when not in use for more than two weeks. During testing, however, the mechanical noise it made during operation was quite loud and irritating at times, measured at 50.2 dB. There was also beeping and stopping at certain intervals, and testers commented that this was enough of a problem to make this diffuser unsuitable when you need to concentrate.

MUJI's ultrasonic aroma diffuser features a timer of up to eight hours to prevent the tank from going dry. Testing for diffusion speed and range, the scent was able to reach a point eight feet away in only four minutes and 35 seconds, earning it a high rating. You’ll be able to experience the fragrance very soon after turning the power on. The fragrance was clear at as far as almost 10 feet away, but was still gently perceptible at greater distances, making this a good choice if you’re looking for a softer scent.

There are no small parts that require maintenance. You just have to empty and refill the water container, making it easy for anyone to use. The operating noise was measured at 42 dB, a potential problem if you plan on using it while you sleep. The sound was generated by water, as opposed to a mechanical sound, making it less obtrusive.

Fimilo's aroma diffuser is an ultrasonic diffuser featuring an automatic timer. This prevents the unit from burning out if you forget to turn it off. The diffusion rate was measured as spreading to eight feet in nine minutes and 30 seconds, earning the diffuser a lower rating. In addition, even after running longer, the scent did not spread beyond the eight-foot range, making use more appropriate in a bedroom or study, rather than a large space like a living room.

Noise during operation was measured at a low 42.0 dB, but the sound was a mixture of mechanical sounds and water sounds. In spite of this, testers commented that it was not enough to disturb sleep. It’s easy to clean by just draining the water, making it a good choice for busier people.

Asakuki's essential oil diffuser is an ultrasonic type. It has a light with seven different colors, including green and orange. It took a full 12 minutes and 30 seconds for the scent to reach the mark eight feet from the diffuser, resulting in a low rating. It takes a long time for the fragrance to spread after the machine is activated. Also, the diffusion range was only 9.8 feet, making this diffuser unsuitable for use in a large space such as a living room.

At 45 dB, the noise during use was fairly loud, but the sound was made by water, and testers felt that this wouldn’t disturb your concentration, even when you’re working. Also, you just have to drain it to clean it, so maintenance is easy and requires no disassembly.

Hijaz's oil diffuser is an ultrasonic diffuser. It features a light that flickers to resemble flame. This diffuser received a low score in terms of speed, as it took 16 minutes and 12 seconds for the fragrance to be perceived at eight feet. Over 30 minutes, the fragrance could only be picked up as far as 12 feet away from the unit, making it unsuitable for use in a large room.

At 46.7 dB, it was rather loud during operation. It made a squeaky mechanical sound that testers felt would disturb sleep. The shape of the interior is uneven, making it difficult to wipe, but other than that maintenance is easy and involves just draining the water.

InnoGear's essential oil diffuser is an ultrasonic diffuser. It is small in size and features lights in six different colors. Measuring the speed of diffusion, it took 13 minutes and 21 seconds to pick up the scent from a point eight feet away, a potential drawback that resulted in a lower rating. Additionally, the scent was only perceptible at a maximum distance of eight feet, a range too low for use in larger rooms.

The essential oil diffuser was quiet during use, at 43 dB. Testers also commented that what they did hear was only the sound of water, so it was unlikely to cause any disturbance during work or sleep. Maintenance consists of only wiping down the inside and emptying the water, making it easy for anyone to take care of.

Earnest Living's metal oil diffuser is an ultrasonic diffuser with seven different colored lights, including red and green. It took 17 minutes and 14 seconds to pick up the diffused fragrance from eight feet away. This low rate of diffusion means that the diffuser is not good for use in large spaces.

Testers reported only being able to hear the sound of vapor coming out. The noise level was measured at 42 dB, quiet enough to not disturb sleep. It’s easy to clean. All you have to do is empty the water tank and wipe down the machine.

The Petal Diffuser from doTERRA is an ultrasonic diffuser. It is compact, perfect to fit in a small space in your home or office. It took 30 minutes to perceive the scent at a distance of eight feet away, resulting in a low rating. At 30 minutes, the scent could not be perceived past eight feet, making this diffuser appropriate for use only in close proximities.

Noise during operation was measured at 44.3 dB, and testers commented that the sound of the motor running was grating and may interfere with sleep. Maintenance, on the other hand, is easy for particularly busy people. All you have to do is drain the remaining water and wipe the inside of the machine.

Jiyer Ltd.'s diffuser is an ultrasonic diffuser with rattan accent. It has a stylish appearance and could be used to accent your living room or workspace. This diffuser was not able to produce a discernible scent at eight feet within the set duration of 30 minutes, resulting in a low score. The range of diffusion was measured to be very limited at six feet, making this device unsuitable for large spaces such as living rooms.

Although the diffuser operated at 44.7 dB, testers said they only heard the sound of water, and that it wasn’t particularly disruptive. This diffuser is easy to maintain. Cleaning involves emptying the water and wiping the machine dry.

The Raindrop Nebulizing Diffuser from Organic Aromas is a heat-based diffuser with a light that changes into seven different colors. The Raindrop received a low score when tested on speed of diffusion because the fragrance was not detectable after 30 minutes at a distance of eight feet. Another drawback is that the diffusion area is so constrained that the fragrance cannot be detected unless you get very close. We can't recommend it, unless you want to use it at your desk.

For cleaning purposes, the diffuser needs to be sprayed with an alcohol solution five to 10 minutes after you finish using it, making it notably difficult to maintain. Noise during operation was measured at 45 dB, but testers didn’t find the sound of the motor particularly unpleasant or potentially disruptive when working.